KR20200110725A - Module for supplying power and system for supplying power - Google Patents

Abstract

The present invention relates to a power supply device and power supply system, which include a circuit breaker which switches connection to a power bus, and manually control the supply of power by opening and closing the circuit breaker according to various situations occurring in the system. The power supply device includes: at least one first power conversion device for converting power supplied from at least one power supply source into DC power; at least one second power conversion device converting the DC power into driving power and supplying the driving power to a load; and the circuit breaker.

Description

Power supply and power supply system {MODULE FOR SUPPLYING POWER AND SYSTEM FOR SUPPLYING POWER}

The present invention relates to a power supply device and a power supply system capable of supplying uninterruptible power.

The technology behind the present invention relates to a system comprising a plurality of power supplies.

A system in which a plurality of power supply devices supply power to each load may be connected in common through a DC bus line. When connected to a common bus line as described above, there is an advantage of being able to receive and supply power to and from neighboring power supplies through the DC bus line. However, when the system is configured in this way, there are limitations such as a stability problem of the system, difficulty in controlling power supply and supply, and lack of a countermeasure in case of an accident.

Since a large number of power devices having a complex configuration are provided, system operation cannot be stably performed when compatibility between devices is poor. In addition, if the load to which each device supplies power is an important load that requires power supply at all times, it is required to provide a separate UPS device in case of an abnormal condition. If a UPS device is provided, the system configuration becomes more complicated. Due to structural/design constraints, the provision of a UPS device itself is not easy. In addition, as the configuration becomes more complex, the control of each device and system is inevitably more complex, and the risk of occurrence of failures and accidents increases. As a result, it is difficult to supply stable and reliable power, so that the operation of the load is also unstable, and there is a problem that an appropriate driving response according to the occurrence of various accidents cannot be made.

An object of the present invention is to improve the limitations of the prior art as described above.

That is, the present specification is to provide a power supply device and a power supply system capable of improving the limitations of the prior art.

Specifically, it is intended to provide a power supply device and a power supply system in which power is supplied between a plurality of power supply devices provided in the system, and each of the plurality of power supply devices can perform a UPS function with each other.

In addition, it is intended to provide a power supply device and a power supply system capable of effectively maintaining power supply to a load in various abnormal situations.

In addition, it is intended to provide a power supply device and a power supply system capable of stably and appropriately coping with the supply of power according to various abnormal situations.

The power supply device and the power supply system according to the present invention for solving the above-described problems include a circuit breaker that regulates connection to a power bus to which a plurality of power supply devices are connected, and according to various situations occurring in the system, the The solution is to open and close the circuit breaker to control the power supply.

That is, the power supply device and the power supply system according to the present invention include a breaker corresponding to a plurality of power supply devices, and by controlling the breaker to receive and supply power through a power bus, between the plurality of power supply devices It is characterized in that it performs the UPS function.

The technical features as described above may be applied to and implemented in a power supply device and a power supply system, and the present specification provides an embodiment of a power supply device and a power supply system having the above technical features.

An embodiment of the power supply device according to the present invention using the above technical characteristics as a problem solving means, one or more first power conversion devices for converting power supplied from one or more power sources into DC power, driving the DC power At least one second power conversion device that converts into power and supplies it to a load, and a power terminal connected to the output terminal of the first power conversion device and the input terminal of the second power conversion device, and the power supply terminal through which the DC power passes. And a circuit breaker disposed between bus lines, wherein the circuit breaker is opened and closed according to a state of at least one of the DC power supply, the driving power supply, the first power conversion device, and the load, and the power supply terminal and the bus Connect or interrupt the DC power between lines.

In an embodiment of the power supply device, the at least one power supply source may include a first AC power supply and a second AC power supply supplying AC power.

In an embodiment of the power supply device, the at least one power supply source further includes a battery storing DC power, and when supply of the DC power to the second power converter is stopped, the DC power supply While the supply is restored, power stored in the battery may be supplied to the first power conversion device.

In one embodiment of the power supply device, when the supply of the DC power is interrupted, the supply of power to the first AC power and the second AC power is stopped, and power from the first AC power and the second AC power It may be one or more of stopping the operation of the one or more first power conversion devices that are supplied with.

In one embodiment of the power supply device, after the supply of the DC power is stopped, the stored power is transferred to the first power conversion device in an uninterrupted manner until the supply of the DC power is switched and restored. Can be supplied.

In one embodiment of the power supply device, the at least one first power conversion device is connected to each of the first AC power, the battery, and the second AC power, and receives power from a connected power supply source. It may include a third conversion device.

In an embodiment of the power supply device, the at least one first power conversion device may supply the DC power to the second power conversion device by operating any one of the first to third conversion devices.

In one embodiment of the power supply device, when the power supply of the conversion device that supplies the DC power to the second power conversion device is stopped, the at least one first power conversion device is a conversion device other than the conversion device Through it, the DC power may be supplied to the second power conversion device.

In one embodiment of the power supply device, when the power supply of the conversion device is stopped, an abnormal state is detected in at least one of the conversion device, a supply source connected to the conversion device, and a rating of the DC power source. I can.

In an embodiment of the power supply device, at least one first power conversion device in a shopping mall may include the DC power supply to the second power conversion device through the second conversion device while the conversion device is switched to the other conversion device. Can supply.

In one embodiment of the power supply device, the at least one state is, when the DC power is changed from the initial state, when the driving power is changed from the initial state, the operating state of the first power conversion device is changed. In this case, it may be at least one of a case in which the load is changed and a case in which the driving state of the load is changed.

In one embodiment of the power supply device, the circuit breaker is closed when the DC power is connected between the power terminal and the bus line, and opened when the DC power is intercepted between the power terminal and the bus line. Can be.

In one embodiment of the power supply device, the circuit breaker, when the power supply of the one or more first power conversion devices is stopped, or when the power supply of another power supply device connected to the bus line is stopped, the power terminal And the bus line is closed so as to be connected, so that the DC power may be conducted from the power terminal to the bus line or from the bus line to the power terminal.

In an embodiment of the power supply device, the circuit breaker is closed so that the power terminal and the bus line are connected when the power supply of the converter connected to the first AC power and the second AC power is stopped, The DC power may be conducted from the bus line to the power terminal to be supplied to the second power conversion device.

In an embodiment of the power supply device, in the converter connected to the battery, the power supply of the converter connected to the first AC power and the second AC power is stopped, and the DC power conducted from the bus line is The DC power may be supplied to the second power conversion device until it is supplied to the second power conversion device.

In one embodiment of the power supply device, controlling the at least one first power conversion device, the second power conversion device, and the circuit breaker, and the at least one power supply source, the at least one first power conversion device, the DC power supply And a control unit that monitors an abnormal state of at least one of the driving power and the load, and controls the circuit breaker to connect the power terminal and the bus line according to a monitoring result.

In addition, another embodiment of the power supply device according to the present invention, which uses the above technical features as a problem solving means, includes a plurality of converters for converting power supplied from each of a plurality of power sources into DC power, and a plurality of the DC power sources. It is provided between a plurality of inverters for supplying the driving power to the plurality of loads by converting into driving power for driving the load of the plurality of loads, an output terminal to which the outputs of the plurality of converters are commonly connected, and a bus line connected to the output terminal , A circuit breaker for controlling the connection of the output terminal and the bus line, and a control unit for controlling the opening and closing of the circuit breaker according to the state of the DC power or the driving power, and controlling the water supply of the DC power through the bus line. can do.

In one embodiment of the power supply device, the control unit selects one of the plurality of converters according to the state of the plurality of power supply sources, and controls the selected converter to deliver the DC power to each of the plurality of inverters. can do.

In an embodiment of the power supply device, the controller, when an abnormality occurs in at least one of a converter that is delivering the DC power to the plurality of inverters and a power supply source corresponding to the converter, a converter other than the converter It may be controlled to transmit the DC power to the plurality of inverters.

In one embodiment of the power supply device, when an abnormality occurs in the plurality of power supply sources, the control unit closes the circuit breaker to supply the DC power from another power supply device connected to the bus line through the bus line. It can be controlled to be supplied.

In one embodiment of the power supply device, the controller, when an abnormality occurs in another power supply device connected to the bus line, closes the circuit breaker and supplies DC power to the other power supply device through the bus line. Can be controlled to do.

On the other hand, an embodiment of the power supply system according to the present invention, which uses the above technical characteristics as a problem solving means, converts power supplied from one or more power sources into DC power, and converts the DC power into driving power of the load. Thus, a plurality of power supply boards supplied to the load, a power supply terminal through which the DC power is input/output from each of the plurality of power supply boards are connected, and a bus line through which the DC power converted from the plurality of power supply boards is conducted and the power supply However, it includes a plurality of circuit breakers disposed between each and the bus line, wherein the plurality of circuit breakers are opened and closed according to an operation state of at least one of the plurality of power boards, and between the power terminal and the bus line, the Connect or interrupt DC power.

In one embodiment of the power supply system, the at least one power supply source stores a first AC power supply, a second AC power supply, and a DC power supply supplying AC power, and the first AC power supply and the second AC power supply When power supply is interrupted, power stored in the battery may include battery power supplied to the plurality of power panels while the power supply is switched and restored.

In an embodiment of the power supply system, after the power supply is stopped, the stored power may be randomly supplied to the plurality of power panels until the power supply is switched and restored. .

In one embodiment of the power supply system, the at least one power supply source is an emergency power supply for supplying emergency power generation to the load when the power supply of the first AC power, the second AC power, and the battery power is stopped. It may further include a power source.

In one embodiment of the power supply system, each of the plurality of power boards includes at least one first power conversion device for converting power supplied from the at least one power supply source into the DC power source and the at least one first power conversion device It may include a second power conversion device for converting the DC power supplied from the drive power to supply to the load.

In one embodiment of the power supply system, the plurality of power supply units may supply the DC power to the second power conversion apparatus by one of the at least one first power conversion apparatus according to the state of the at least one power supply source. have.

In an embodiment of the power supply system, when the power supply of the conversion device that supplies the DC power to the second power conversion device is stopped, the plurality of power supply units are The DC power may be supplied to the second power conversion device.

In one embodiment of the power supply system, at least one first power conversion device in a shopping mall, while the conversion device is converted to the other conversion device, the second power conversion through a conversion device receiving power from the battery power source. The DC power can be supplied to the device.

In one embodiment of the power supply system, the plurality of circuit breakers are closed when the DC power is connected between the power terminal and the bus line, and intercept the DC power between the power terminal and the bus line. If it can be dogs.

In one embodiment of the power supply system, the plurality of circuit breakers may include a circuit breaker of a power supply panel in which the power supply is interrupted and a circuit breaker of a power supply panel adjacent to the interrupted power supply panel when the supply of one or more of the power supply panels is interrupted. Is closed, the interrupted power supply panel and the adjacent power supply panel are connected to the bus line, so that the DC power is supplied from the adjacent power supply panel to the interrupted power supply panel.

In one embodiment of the power supply system, the interrupted power supply unit, the DC power supply in the converter connected to the battery power supply until the power supply is stopped and the DC power connected from the adjacent power supply unit is supplied. Power can be supplied.

In one embodiment of the power supply system, a control for monitoring the state of at least one of the plurality of power panels and the plurality of circuit breakers, and controlling at least one of the plurality of power panels and the plurality of circuit breakers according to a monitoring result It may further include a device.

In addition, an embodiment of the power supply system according to the present invention using the above technical characteristics as a problem solving means, converts power supplied from each of a plurality of loads and a plurality of power supply sources into DC power, and converts the DC power to the A plurality of power supply boards for supplying the driving power to the plurality of loads by converting into driving power for driving a plurality of loads, and an output terminal from which the DC power is output from each of the plurality of power supply boards are connected in common, so that the A plurality of circuit breakers provided on a bus line through which the DC power converted from a plurality of power panels is transmitted, and a converter connected to each of the output terminals and the bus line, to regulate the connection between each of the plurality of power panels and the bus line; and And a control device for controlling opening/closing of the plurality of circuit breakers according to the states of each of the plurality of power panels, and controlling the supply of the DC power between the plurality of power panels through the bus line.

In an embodiment of the power supply system, the plurality of power panels select one of a plurality of converters for converting the DC power according to the states of the plurality of power supply sources, and convert the driving power to the selected converter. The DC power may be delivered to each of a plurality of inverters.

In one embodiment of the power supply system, when an abnormality occurs in at least one of a converter delivering the DC power to a plurality of inverters that convert the driving power and a power supply source corresponding to the converter , It is possible to transmit the DC power to the plurality of inverters to other converters other than the converter.

In one embodiment of the power supply system, when an abnormality occurs in one or more of the plurality of power supply panels, the control device closes the abnormal power supply panel and a circuit breaker of the power supply panel closest to the abnormal power supply panel, It is possible to control the abnormal power supply panel to receive the DC power from the adjacent power supply panel through the bus line.

The power supply device and the power supply system according to the present invention as described above may be applied to a power supply module that supplies/uses DC power, a power supply device, a power supply system, and a method of operating the power supply system. In particular, the DC UPS module and the power supply system having the same can be effectively applied and implemented. However, the technology disclosed in this specification is not limited thereto, and all power devices, power supply devices, power control devices, power supply systems, power systems, power control systems, plant systems, and plant control systems to which the technical idea of the technology can be applied. , A plant control method, an energy storage system, a control method or operation method of an energy storage system, a motor control panel for controlling a plurality of motor loads, a motor control system, a motor driving system, and the like.

The power supply device and the power supply system according to the present invention control a circuit breaker of each of a plurality of power supply devices connected to a power bus to receive and supply power through a power bus, thereby performing a UPS function between a plurality of power supply devices. There is an effect to be able to.

Accordingly, even if various abnormal situations occur on the system/system, there is an effect that power supply to the load can be maintained without interruption.

That is, the power supply device and the power supply system according to the present invention have the effect of being able to properly and stably cope with various abnormal situations occurring on the system/system.

In addition, the power supply device and the power supply system according to the present invention control the circuit breakers of each of the plurality of power supply devices connected to the power bus according to the occurrence situation and control the power to be supplied through the power bus, with minimal means. There is an effect of enabling efficient operation.

In addition, the power supply device and the power supply system according to the present invention have the effect of being able to increase the stability, reliability, and utility of large-capacity system operation.

As a result, the power supply device and the power supply system according to the present invention have the effect of solving the above-described problems, thereby improving the limitations of the prior art.

1 is a block diagram showing the configuration of a power module according to the present invention.
2 is a block diagram showing a specific circuit configuration of the power module according to the present invention.
3 is a block diagram showing a specific structural configuration of the power module according to the present invention.
4 is a block diagram showing the configuration of a power system equipped with a power module according to the present invention.
5 is an exemplary view showing a specific embodiment of the power system according to the present invention.
6 is an exemplary view showing a specific embodiment of the power system according to the present invention 2.
7 is an exemplary view showing a specific embodiment of the power system according to the present invention 3.
8 is an exemplary view showing a specific embodiment of the power system according to the present invention 4.

It should be noted that the technical terms used in the present specification are only used to describe specific embodiments and are not intended to limit the spirit of the technology disclosed in the present specification. In addition, the technical terms used in the present specification should be interpreted in the meaning generally understood by those of ordinary skill in the field to which the technology disclosed in the present specification belongs, unless otherwise defined in the specification. It should not be construed in a comprehensive or excessively reduced sense. In addition, when a technical term used in the present specification is an incorrect technical term that does not accurately express the spirit of the technology disclosed in the present specification, it should be replaced with a technical term that can be correctly understood by those skilled in the art. In addition, general terms used in the present specification should be interpreted as defined in the dictionary or according to the context before and after, and should not be interpreted as an excessively reduced meaning.

In addition, the singular expression used in the present specification includes a plurality of expressions unless the context clearly indicates otherwise. In the present specification, terms such as “consisting of” or “comprising” should not be construed as necessarily including all of the various elements or various steps described in the specification, and some of the elements or some steps It may not be included, or it should be interpreted that it may further include additional elements or steps.

Hereinafter, exemplary embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but identical or similar components are denoted by the same reference numerals regardless of reference numerals, and redundant descriptions thereof will be omitted.

In addition, in describing the technology disclosed in the present specification, when it is determined that a detailed description of a related known technology may obscure the gist of the technology disclosed in the present specification, a detailed description thereof will be omitted. In addition, it should be noted that the accompanying drawings are for easy understanding of the spirit of the technology disclosed in the present specification, and should not be construed as limiting the spirit of the technology by the accompanying drawings.

First, a power supply device according to the present invention will be described.

The embodiments of the power supply device described below may be implemented independently or may be implemented in combination with the embodiments of the control system described below.

The power supply device may be implemented in a combination or separate form of embodiments to be described below.

The power supply device may be a module including a plurality of power control devices.

The power supply device may be a power device in which the plurality of power control devices are packaged.

For example, the plurality of power control devices may be a packaged power supply board.

The power supply device may be a package type power supply board provided in buildings requiring high power, such as power plants, plants, factories, buildings, and apartments, and supplying power.

The power supply device may also be a package type power board configured in any one space.

In the power supply device, the plurality of power control devices may be packaged to supply power to a load.

The supply device 100 (hereinafter, referred to as a supply device), as shown in FIG. 1, one or more first power conversion devices 110 for converting power supplied from one or more power supply sources 10 into DC power. ), at least one second power conversion device 120 that converts the DC power into driving power and supplies it to the load 20, and the output terminal of the first power conversion device 110 and the second power conversion device 120 ) And a circuit breaker 130 disposed between a power terminal to which the input terminal of) is connected and a bus line 1 through which the DC power passes.

In the supply device 100, the breaker 130 may open and close differently according to a state of at least one of the DC power, the driving power, the first power conversion device 110 and the load 20, The DC power is connected or interrupted between the power supply terminal and the bus line 1.

As such, the supply device 100 includes the first power conversion device 110, the second power conversion device 120, and the circuit breaker 130, and the power supplied from the one or more power supply sources 10 Is converted into the driving power and supplied to the load 20.

The specific configuration of the supply device 100 including the first power conversion device 110, the second power conversion device 120 and the circuit breaker 130 may be as shown in FIGS. 2 and 3. have.

The one or more power supply sources 10 for supplying power to the supply device 100 are externally connected to the one or more first power conversion devices 110 and to the one or more first power conversion devices 110. Power can be supplied.

The one or more power supply sources 10 may be formed in plural.

The one or more power supply sources 10 may be connected to the one or more first power conversion devices 110 to supply DC or AC power to the one or more first power conversion devices 110.

The one or more power supply sources 10 may include different power supply sources.

The one or more power supply sources 10 may include a first AC power supply 10#1 and a second AC power supply 10#3 supplying AC power, as shown in FIGS. 2 and 3. .

The one or more power supply sources 10 may further include a battery 10#2 in which DC power is stored.

The one or more power supply sources 10 preferably include three different power sources 10#1 to #3 as shown in FIGS. 2 and 3, but three different power sources 10# 1 to #3), respectively, the first AC power supply 10#1 for supplying AC power, the battery 10#2 for storing DC power, and the second AC power supply 10# for supplying AC power. 3) can be.

Accordingly, the supply device 100 may receive two or more AC power and one or more DC power.

The first AC power supply 10#1 may be a system power supply G.

The first AC power 10#1 may be a system power G supplying 440 [V] of AC power.

The second AC power supply 10#3 may be a bypass power supply P.

The second AC power 10#3 may be a bypass power supply P that supplies 440 [V] of AC power.

The battery 10#2 may be an emergency battery that stores DC power and supplies the stored DC power in case of an emergency.

When an abnormality occurs in the first AC power and the second AC power, the battery 10#2 may supply the stored DC power to the supply device 100.

Accordingly, when the supply of the DC power to the second power conversion device 120 is stopped, the one or more power supply sources 10 may supply the battery 10#2 while the supply of the DC power is restored. Stored power may be supplied to the first power conversion device 110.

Here, when the supply of the DC power is stopped, the first AC power supply 10#1 and the second AC power supply 10#3 are interrupted, and the first AC power 10#1 and It may be one or more of stopping the operation of the one or more first power conversion devices 110 receiving power from the second AC power source 10#3.

The battery (10#2), after the supply of the DC power is stopped, until the supply of the DC power is switched and restored, the stored power is to be supplied to the first power conversion device (110) without a step. I can.

The meaning of the uninterrupted supply means that the stored power is supplied to the first power conversion device 110 so that power supply is not interrupted, that is, a power failure does not occur.

Accordingly, in the supply device 100, power supply to the load 20 through the battery 10#2 may be non-stop, and the uninterruptible power supply for power supply to the load 20 may be performed. It can be done.

The one or more first power conversion devices 110 may be formed in plural.

The first power conversion device 110 is a device that converts the supplied power into DC power, and may be, for example, a converter.

* The first power conversion device 110 may be an AC/DC converter that converts AC power to DC power, or a DC/DC converter that converts DC power to DC power.

The at least one first power conversion device 110 may include at least one of an AC/DC converter converting AC power into DC power and a DC/DC converter converting a level of DC power.

The at least one first power conversion device 110 is connected to each of the first AC power supply 10#1, the battery 10#2, and the second AC power supply 10#3, and a connected power supply source It may include first to third conversion devices 110#1 to 110#3 receiving power from.

The one or more first power conversion devices 110 may include three conversion devices 110 # 1 to # 3 corresponding to each of the one or more power supply sources 10.

According to this, the first AC power supply 10#1 is connected to the first conversion device 110#1 to supply AC power to the first conversion device 110#1, and the battery 10#2 ) Is connected to the second conversion device 110#2 to supply DC power to the second conversion device 110#2, and the second AC power 10#3 is a third conversion device 110# 3), it is possible to supply AC power to the third conversion device 110#3.

The first converter 110#1 may be an AC/DC converter for converting AC power into DC power, and the second converter 110#2 may be a DC/DC converter for converting the level of DC power. It may be a DC converter, and the third converter 110#3 may be an AC/DC converter that converts AC power into DC power.

Each of the one or more first power conversion devices 110 may include opening and closing means for opening and closing connections to each of the front and rear ends.

The opening/closing means may be a switch provided at each input terminal and an output terminal of each of the at least one first power conversion device 110 to control power input/output from the at least one first power conversion device 110.

Here, the opening/closing means provided at the input terminal may be a circuit breaker that detects an overcurrent and blocks a circuit.

More specifically, the first conversion device 110#1 and the third conversion device 110# receiving AC power from the first AC power supply 10#1 and the second AC power supply 10#3. An AC air circuit breaker (ACB) may be provided at the input terminal of 3), and a DC wiring breaker at the input terminal of the second converter 110#2 receiving DC power from the battery 10#2 (MCCB: Molded Circuit Breaker) may be provided.

The opening/closing means may open/close the connection of the one or more first power conversion devices 110 according to the operation of the one or more first power conversion devices 110.

For example, when power is not supplied from the one or more power supply sources 10, the opening/closing means provided at each of the input terminal and the output terminal are opened to separate the connection of the corresponding first power conversion device 110.

In the at least one first power conversion device 110, the output terminal may be connected to one converter.

That is, the output terminals of the at least one first power conversion device 110 are connected in common, so that the DC power converted by the at least one first power conversion device 110 may flow.

Accordingly, the output terminal may be a converter through which the output terminals of the one or more first power conversion devices 110 are connected in common and the DC power output from the one or more first power conversion devices 110 flows.

The output terminal is connected to the input terminal of each of the bus line (1) and the plurality of second power conversion devices 120 to supply the DC power to the bus line (1) or the plurality of second power conversion devices (120). ) Can be delivered.

The DC power converted and output by the at least one first power conversion device 110 may be transferred to the second power conversion device 120.

The at least one first power conversion device 110 is operated by any one of the first to third conversion devices (110#1 to 110#3), the DC power supply to the second power conversion device 120 Can supply.

The supply device 100, when the power supply of the conversion devices (110#1 to #3) supplying the DC power to the second power conversion device 120 is stopped, the at least one first power conversion device 110 may supply the DC power to the second power conversion device 120 through a conversion device other than the conversion devices 110#1 to #3.

Here, when the power supply of the conversion devices 110#1 to #3 is interrupted, the conversion devices 110#1 to #3, a supply source connected to the conversion devices 110# to #3, and the DC It may be the case that an abnormal condition is detected in one or more of the ratings of the power supply.

For example, while the first conversion device (110#1) connected to the first AC power source (10#1) supplies the DC power to the second power conversion device 120, the first conversion device ( When the rating of the DC power output from 110#1) is reduced below a certain standard, the second conversion device 110#3, which is a conversion device other than the first conversion device 110#1, is The DC power may be supplied to the power conversion device 120.

In this case, the at least one first power conversion device 110 in the shopping mall, while the conversion devices 110#1 to 110#3 are converted to the other conversion devices, the second power conversion device connected to the battery 10#2 The DC power may be supplied to the second power conversion device 120 through the conversion device 110#2.

That is, when the supply of the DC power to the second power conversion device 120 is stopped, the second conversion device 110#2 connected to the battery 10#2 switches the supply of the DC power. The DC power may be supplied to the second power conversion device 120 until it is recovered.

The second power conversion device 120 may be formed in plural.

The second power conversion device 120 is a device that converts the supplied DC power into the driving power, and may be, for example, an inverter.

The second power conversion device 120 may be an inverter that converts DC power received from the first power conversion device 110 into AC driving power when the load is a load driven by AC power.

The second power conversion device 120 may be an inverter that converts DC power received from the first power conversion device 110 into DC driving power when the load is a load driven by DC power.

The second power conversion device 120 may be provided in a number corresponding to the load 20.

The load 20 may be formed in plural.

The second power conversion device 120 may include three or more inverters 120#1 to #3 corresponding to the load 20.

Each of the second power conversion devices 120 may be connected to each of the loads 20 to supply the driving power to the connected loads.

Each of the second power conversion devices 120 may include an opening and closing means for opening and closing the connection at the front end.

The opening/closing means may be a switch provided at each input terminal of the second power conversion device 120 and controlling power input to the second power conversion device 120.

Here, the opening/closing means provided at the input terminal may be a circuit breaker that detects an overcurrent and blocks a circuit.

The driving power converted and output by the second power conversion device 120 may be delivered to each of the loads 20.

Here, the load 20 may include an electric motor (M) load.

The circuit breaker 130 may be a DC circuit breaker that blocks DC power.

The circuit breaker 130 includes the power terminal connected to the output terminal of each of the one or more first power conversion devices 110 and the input terminal of the second power conversion device 120, and the bus line 1 connected to the power terminal. It can be provided between.

That is, the circuit breaker 130 is provided between the power terminal of the supply device 100 and the bus line (1), to regulate the connection between the supply device 100 and the bus line 1 I can.

Accordingly, the supply device 100 may be connected to the bus line 1 through the power terminal, and the connection with the bus line 1 may be interrupted by opening and closing of the circuit breaker 130.

The bus line 1 may be a DC bus line through which DC power flows.

The bus line 1 may mean a DC-only converter through which a plurality of power supply sources are connected in common to transmit power.

The bus line 1 is connected to a plurality of DC power supply sources, and DC power supplied from the plurality of DC power supply sources may be transmitted.

For example, by being connected to a power supply device other than the supply device 100, DC power may be transmitted between the supply device 100 and the other power supply device.

The bus line 1 may have a rating of a size of DC power supplied from at least one first power conversion device 110 or a size of DC power supplied from two first power conversion devices 110. .

That is, the rating of the bus line 1 may be a rating at which DC power supplied from at least two first power conversion devices 110 can be transmitted.

Preferably, the bus line 1 may have a rating of a size capable of transmitting DC power between all power panels connected to the bus line 1.

The DC power may flow through the bus line 1 as the breaker 130 is opened or closed.

The DC power may be conducted to the bus line 1 according to an opening/closing operation of the circuit breaker 130.

The circuit breaker 130 disposed between the power terminal and the bus line 1 to connect or interrupt the power terminal and the bus line 1 may be a DC-only circuit breaker (MCCB).

The breaker 130 may open/close according to a state of at least one of the DC power, the driving power, the first power conversion device 110 and the load 20, and the power terminal and the bus line ( 1) The DC power can be connected or interrupted between.

Here, the at least one state is, when the DC power is changed from the initial state, the driving power is changed from the initial state, the operation state of the first power conversion device 110 is changed, and the load It may be at least one of the cases in which the driving state of 20 is changed.

For example, when the DC power or the driving power falls below the reference rating, when a failure/accident occurs in the first power conversion device 110 and the operation state changes, or the It may be a case that the driving state of the load 20 is changed due to a decrease in driving power.

The circuit breaker 130 may be opened during normal operation and closed during operation, thereby controlling the connection between the output terminal and the bus line 1.

That is, the breaker 130 may be open during normal times to separate the output terminal and the bus line 1, and closed during operation to connect the output terminal and the bus line 1.

The circuit breaker 130 is closed when the DC power is connected between the power terminal and the bus line 1, and is closed when the DC power is intercepted between the power terminal and the bus line 1. I can.

When the power supply of the at least one first power conversion device 110 is interrupted or the power supply of another power supply device connected to the bus line 1 is interrupted, the circuit breaker 130 may include the power terminal and The bus line 1 is closed so as to be connected, so that the DC power may be conducted from the power terminal to the bus line 1 or from the bus line 1 to the power terminal.

The circuit breaker 130 is closed so that the power terminal and the bus line 1 are connected when the supply of power to the at least one first power conversion device 110 is interrupted, so that the DC power is supplied to the bus line ( The DC power may be supplied to the power terminal by conducting conduction from 1) to the power terminal.

When the power supply of the conversion device connected to the first AC power supply 10#1 and the second AC power supply 10#3 is interrupted, the circuit breaker 130 may include the power supply terminal and the bus line 1 It is closed so as to be connected, and conducts the DC power from the bus line 1 to the power supply terminal so that it is supplied to the second power conversion device 120.

In this case, the converter connected to the battery 10#2 stops supplying power to the converter connected to the first AC power supply 10#1 and the second AC power supply 10#3, and the bus The DC power may be supplied to the second power conversion device 120 until the DC power conducted from the line 1 is supplied to the second power conversion device 120.

That is, the conversion device connected to the battery 10#2 is the DC to the second power conversion device 120 until the supply of the DC power to the second power conversion device 120 is switched and restored. It may be that the supply of power is maintained.

When the power supply of another power supply device connected to the bus line 1 is stopped, the circuit breaker 130 is closed so that the power terminal and the bus line 1 are connected, so that the DC power is supplied to the power terminal. The DC power may be supplied to the bus line 1 by conducting conduction to the bus line 1.

As described above, the supply device 100 including the at least one first power conversion device 110, the second power conversion device 120 and the circuit breaker 130 may include the at least one first power conversion device ( 110), controlling the second power conversion device 120 and the circuit breaker 130, and controlling the at least one power supply source 10, the at least one first power conversion device 110, the DC power supply, and the driving power supply And a controller 140 that monitors an abnormal state of at least one of the loads and controls the circuit breaker 130 to connect the power terminal and the bus line 1 according to a monitoring result.

The control unit 140 may be a central control unit of the supply device 100.

The control unit 140 may include a plurality of control means for controlling the supply device 100.

The control unit 140 may further include a plurality of electronic devices for performing functions of the supply device 100.

For example, a storage means for storing software/applications/programs for performing and controlling functions of the supply device 100, a dedicated control means including the storage means, a communication means, a display means, and an input means. I can.

The control unit 140 may control the at least one first power conversion device 110, the second power conversion device 120, and the circuit breaker 130.

The control unit 140 may include a programmable logic controller (PLC) that controls the at least one first power conversion device 110, the second power conversion device 120, and the circuit breaker 130.

The control unit 140 monitors the state of the at least one first power conversion device 110, the second power conversion device 120, and the circuit breaker 130, and It is possible to control the operation of the 1 power conversion device 110, the second power conversion device 120, and the circuit breaker 130.

The control unit 140 also includes the at least one first power conversion device 110, the second power conversion device 120, and the at least one power conversion device based on the state of the at least one power supply source 10 and the load 20. The operation of the circuit breaker 130 can be controlled.

The controller 140 may control the operation of each of the one or more first power conversion devices 110 to control conversion and supply of the DC power.

For example, by controlling the operation of the control target conversion device among the one or more first power conversion devices 110, the control to convert and supply the DC power to the second power conversion device 120 through the control target conversion device Can be done.

The control unit 140 may also control opening and closing of each of the opening and closing means included in the one or more first power conversion devices 110.

The controller 140 may control the operation of each of the second power conversion devices 120 to control conversion and supply of the driving power.

For example, the operation of an inverter to be controlled among the second power converter 120 may be controlled to convert and supply the driving power to the load 20 through the inverter to be controlled.

The control unit 140 may also control opening and closing of each of the opening and closing means included in the second power conversion device 120.

The control unit 140 may control the operation of the circuit breaker 130 to control the supply and supply of the DC power.

For example, the circuit breaker 130 may be closed to receive the DC power from the bus line 1 or control to supply the DC power to the bus line 1.

The control unit 140 also performs communication with one or more of an external communication device and a control device, and according to a result of the communication, the at least one first power conversion device 110 and the second power conversion device 120 ) And the operation of the circuit breaker 130 may be controlled.

For example, by receiving a control command for controlling the operation of one or more of the one or more first power conversion device 110, the second power conversion device 120, and the breaker 130 from the control device, the control command Accordingly, the operation of one or more of the at least one first power conversion device 110, the second power conversion device 120, and the circuit breaker 130 may be controlled.

The controller 140 may control to receive power from any one of the one or more power supply sources 10 and convert it into the DC power.

That is, the controller 140 may control to selectively receive power from one of the one or more power supply sources 10.

The controller 140 may control to receive power from one of the one or more power supply sources 10 and convert the power to the DC power according to a predetermined supply standard.

The supply criterion may be a criterion for priority of power supply of the one or more power supply sources 10.

For example, the first AC power supply 10#1, the second AC power supply 10#3, and the battery 10#3 may be set in this order.

When the supply criterion is the same, the control unit 140 controls to receive power in the order of the first AC power supply (10#1), the second AC power supply (10#3), and the battery (10#3). can do.

The control unit 140, when receiving power from the first AC power supply 10#1, controls the operation of the first conversion device 110#1 connected to the first AC power supply 10#1 can do.

In this case, the control unit 140 closes the opening and closing means of the first conversion device 110#1, and opens and closes the second conversion device 110#2 and the third conversion device 110#3. By opening the means, the first conversion device 110#1 can be connected and the second conversion device 110#2 and the third conversion device 110#3 can be separated.

The control unit 140, when receiving power from the second AC power supply 10#3, controls the operation of the third conversion device 110#3 connected to the second AC power supply 10#3 can do.

In this case, the control unit 140 closes the opening/closing means of the third conversion device 110#3, and opening/closing the first conversion device 110#1 and the second conversion device 110#2. By opening the means, only the third conversion device 110#3 can be connected, and the first conversion device 110#1 and the second conversion device 110#2 can be separated.

When receiving power from the battery 10#2, the controller 140 may control an operation of the second conversion device 110#2 connected to the battery 10#2.

In this case, the control unit 140 closes the opening and closing means of the second conversion device 110#2, and opens and closes the first conversion device 110#1 and the third conversion device 110#3. By opening the means, only the second conversion device 110#2 can be connected and the first conversion device 110#1 and the third conversion device 110#3 can be separated.

The controller 140 selects any one of the one or more first power conversion devices 110 according to the state of the one or more power supply sources 10, and the selected first power conversion device 110 It can be controlled to deliver the DC power to each of the power conversion device 120.

That is, the control unit 140 converts the DC power through the selected one first power conversion device 110 among the one or more first power conversion devices 110 to transmit the DC power to the second power conversion device 120. Can be controlled to deliver.

For example, when an abnormality occurs in the first AC power supply 10#1 and the second AC power supply 10#3 among the one or more power supply sources 10, the second AC power supply connected to the battery 10#2 By selecting the conversion device 110#2, the second conversion device 110#2 receives power from the battery 10#2 and converts it to the DC power, and the second power conversion device 120 It can be controlled to deliver the DC power to each.

The control unit 140 includes a first power conversion device 110 that is delivering the DC power to the second power conversion device 120 and a power supply source 10 corresponding to the first power conversion device 110 When an abnormality occurs in one or more, the first power conversion device 110 other than the first power conversion device 110 may be controlled to transmit the DC power to the second power conversion device 120.

The control unit 140 includes a first power conversion device 110 that is delivering the DC power to the second power conversion device 120 and a power supply source 10 corresponding to the first power conversion device 110 When an abnormality occurs in one or more, power is being supplied so that the first power conversion device 110 other than the first power conversion device 110 delivers the DC power to the second power conversion device 120. The power supply source 10 and the first power conversion device 110 can be switched.

For example, while receiving power from the first AC power supply 10#1 and converting the DC power to the first converter 110#1, the first converter 110#1 fails. In this case, or when a shutdown occurs in the first AC power supply 10#1, the third converter 110#3 receives power from the second AC power supply 10#3, and the third converter 110#3 Converting the first AC power supply (10#1) to the second AC power supply (10#3) to transmit the DC power to the second power conversion device 120, and the The first conversion device 110#1 may be converted to the third conversion device 110#3.

In this case, the controller 130 converts the first AC power supply 10#1 to the second AC power supply 10#3, and the first converter 110#1 converts the third During the conversion to the device 110#3, power is supplied from the battery 10#2 and the DC power is converted to the second conversion device 110#2, and the second power conversion device 120 It can be controlled to deliver the DC power.

In this way, the control unit 140 for controlling the at least one first power conversion device 110, the second power conversion device 120, and the circuit breaker 130, according to the state of the DC power or the driving power By controlling the opening and closing of the breaker 130, the supply of the DC power through the bus line 1 is controlled.

For example, when the size of the driving power is smaller than the required size of the load 20, or when the DC power is insufficient, the circuit breaker 130 is closed to receive the DC power from the bus line 1 Can be controlled to do.

Or, when the size of the driving power is larger than the required size of the load 20, or when the DC power is sufficient, the circuit breaker 130 is closed to supply the DC power to the bus line 1 Can be controlled.

In the opposite case, a failure occurs in the at least one first power conversion device 110 or the second power conversion device 120 and an accident current flows through the output terminal, or the at least one power supply source 10 Alternatively, when an error occurs in the load 20 and the fault current flows through the output terminal, the fault current may be prevented from being supplied to the bus line 1 by opening the circuit breaker 130.

When an abnormality occurs in the one or more power supply sources 10, the control unit 140 closes the breaker 130, and the other power supply device connected to the bus line 1 through the bus line 1 It can be controlled to receive the DC power from.

When an abnormality occurs in the one or more power supply sources 10, the control unit 140 disconnects the connection between the one or more power supply sources 10 and the one or more first power conversion devices 110, and the circuit breaker ( By closing 130), it is possible to control to receive the DC power from another power supply device connected to the bus line 1 through the bus line 1.

For example, when an abnormality occurs in the first AC power supply 10#1 and the second AC power supply 10#3 among the one or more power supply sources 10, the circuit breaker 130 is closed, and the bus line Control to receive the DC power from another power supply device connected to the bus line 1 through (1).

When an abnormality occurs in another power supply device connected to the bus line 1, the control unit 140 closes the circuit breaker 130 to provide DC power to the other power supply device through the bus line 1 Can be controlled to supply.

The control unit 140 controls to further receive power from any one of the one or more power supply sources 10 when an abnormality occurs in another power supply device connected to the bus line 1, and the circuit breaker 130 The DC power converted by the supply source 10 controlled to further supply power through the bus line 1 and the corresponding first power conversion device 110 is supplied to the other power supply device. Can be controlled to do.

For example, when an abnormality occurs in the other power supply device while receiving power from the first AC power supply 10#1 among the one or more power supply sources 10, the circuit breaker 130 is closed, and the second By controlling the third conversion device (110#3) to further receive power from the AC power source (10#3), the second power supply device connected to the bus line (1) through the bus line (1). 3 It can be controlled to supply the DC power converted by the conversion device (110#3).

Accordingly, a preferred embodiment of the supply device 100 is, as shown in FIG. 1, a plurality of converters 110 for converting power supplied from each of a plurality of power supply sources 10 to DC power, and the DC power supply The plurality of inverters 120 and the plurality of converters 110 supply the driving power to the plurality of loads 20 by converting them into driving power for driving the plurality of loads 20. The circuit breaker 130 is provided between the connected output terminal and the bus line 1 connected to the output terminal, and regulates the connection between the output terminal and the bus line 1, and the circuit breaker according to the state of the DC power or the driving power It may include a control unit 140 for controlling the opening and closing of the 130 to control the supply and reception of the DC power through the bus line 1.

As described above, the supply device 100 for receiving and supplying the DC power in connection with the bus line 1 is included in a power supply system as shown in FIG. 4, and includes the bus line 1 and In conjunction, the DC power may be received and supplied.

Hereinafter, a power supply system according to the present invention will be described, but a part overlapping with the above description will be omitted as much as possible.

In addition, a description is made with additional reference to FIGS. 4 to 8 according to an embodiment of the power supply system in FIGS. 1 to 3 previously referenced in the description of the supply device 100, but not specified in FIGS. 4 to 8 Reference numerals will be described in place of those shown in FIGS. 1 to 3.

* The embodiment of the power supply system described below may be implemented independently or may be implemented in combination with the embodiment of the supply device 100 described above.

The power supply system may be implemented in a combination or separate form of the above-described embodiments and the following embodiments.

The power supply system may be a power supply system including a plurality of power supply devices.

The power supply system may be a system that supplies power including a plurality of packaged power devices.

Here, the power device may be a power board in which a plurality of power control devices are packaged.

The power supply system may include a plurality of the supply devices 100 described above.

That is, the supply device 100 may be implemented by being applied to the power supply system, and the power supply system may include a plurality of the supply devices 100.

The power supply system 1000 (hereinafter referred to as a system), as shown in FIG. 4, converts power supplied from one or more power supply sources 10 into DC power, and converts the DC power to a drive power of a load. A plurality of power boards 100, 200, 300 and 400 supplied to the load, and a power terminal through which the DC power is input/output from each of the plurality of power boards 100, 200, 300, and 400 , A bus line 1 through which the DC power converted from the plurality of power panels 100, 200, 300 and 400 is conducted, and a plurality of circuit breakers 130 disposed between each of the power terminals and the bus line 1 , 230, 330 and 430).

In the system 1000, the plurality of circuit breakers 130, 230, 330, and 430 may be opened and closed according to an operation state of one or more of the plurality of power panels 100, 200, 300, and 400, And the DC power supply is connected or interrupted between the bus lines 1.

Here, each of the plurality of power boards 100, 200, 300, and 400 may be a power supply device 100 as illustrated in FIGS. 1 to 3.

Each of the plurality of power supply boards 100, 200, 300 and 400, as shown in FIGS. 1 to 3, includes one or more first power conversion devices 110-210, 310 and 410, and one or more second power Conversion devices 120-220, 320 and 420, the circuit breakers 130-230, 330 and 430, and control units 140-240, 340 and 440 may be included.

Each of the plurality of power boards 100, 200, 300, and 400 may also have a configuration different from that of the power supply device 100 as shown in FIGS. 1 to 3.

The control system 1000 includes a plurality of the plurality of power supply boards 100, 200, 300 and 400, and the plurality of power supply boards 100, 200, 300 and 400 are connected to one bus line (1). Can be connected in common.

The plurality of power boards 100, 200, 300, and 400 may be formed in a plurality, but may be formed in four or more as shown in FIG. 4.

The plurality of power boards 100, 200, 300, and 400 may preferably be formed of five or more.

Each of the plurality of power supply boards 100, 200, 300 and 400 receives power from each of the one or more power supply sources 10 and converts the power to the DC power, and converts the DC power to the driving power. The driving power may be supplied to each of the loads 20.

The one or more power supply sources 10 store a first AC power supply 10#1 and a second AC power supply 10#3 and DC power supplying AC power, as shown in FIGS. 2 and 3 It may include a battery power supply (10#2).

Here, the first AC power supply 10#1 is a main system power supply G supplying AC power, the second AC power supply 10#3 is a bypass system power supply P supplying AC power, and the The battery power 10#2 may be a battery power B supplying DC power.

That is, the one or more power supply sources 10 may include a system power source G, a bypass power source P, and a battery power source B, as shown in FIG. 4.

Accordingly, each of the plurality of power supply panels 100, 200, 300, and 400 may receive power from each of the system power source G, the bypass power source P, and the battery power source B. .

The battery power B is the DC power is stored, and when the power supply of the first AC power 10#1 and the second AC power 10#3 is stopped, the power supply is switched During restoration, power stored in the battery power source B may be supplied to the plurality of power panels 100, 200, 300 and 400.

The battery power (B) is, after the power supply is stopped, the stored power is supplied to the plurality of power panels 100, 200, 300, and 400 in a random manner until the power supply is switched and restored. I can.

The one or more power supply sources 10 are also emergency power to the load 20 when the power supply of the first AC power G, the second AC power P, and the battery power B is stopped. It may further include an emergency power supply (A) for supplying power generation.

The emergency power supply (A), when an abnormality occurs in the first AC power source (G), the second AC power source (P) and the battery power (B), can supply emergency power generation power to the load (20). have.

The emergency power supply A includes the first AC power G, the second AC power P, and the battery power supply for supplying power to each of the plurality of power panels 100, 200, 300, and 400. B) When power cannot be supplied due to an abnormality in all, it may be a power supply that maintains driving of the load 20 for a predetermined time by supplying emergency power to each of the loads 20.

For example, the emergency power source A may be a power source including an emergency generator.

Each of the plurality of power boards 100, 200, 300 and 400 is preferably three power supply sources 10, that is, the system power supply G, the bypass power supply P, as shown in FIG. And power can be supplied from the battery power B, and the system power G, the bypass power P, and the battery power B cannot supply power from the emergency power A. It can only be supplied with power.

Here, each of the one or more power supply sources 10 supplying power to each of the plurality of power boards 100, 200, 300, and 400 is, in one system, the plurality of power supply boards 100, 200, 300, and 400 ) Power may be supplied to each, or power may be supplied to each of the plurality of power supply panels 100, 200, 300, and 400 from each of the divided switchboards through a separate switchboard.

Each of the plurality of power supply boards 100, 200, 300 and 400 may include the at least one first power conversion device 110, 210, 310 for converting power supplied from the at least one power supply source 10 into the DC power. And 410 and the second power conversion device 120 for converting the DC power supplied from the at least one first power conversion device 110, 210, 310, and 410 into the driving power and supplying it to the load 20. , 220, 320, and 420).

Here, the one or more first power conversion devices 110, 210, 310, and 410 and the second power conversion devices 120, 220, 320, and 420 may be formed in plural.

Each of the plurality of power boards 100, 200, 300 and 400 receives power from each of the one or more power supply sources 10, and converts the received power to the plurality of conversion devices 110, 210, 310, and 410. The DC power may be converted into the DC power through and the DC power may be converted into the driving power through the plurality of inverters 120, 220, 320 and 420 and supplied to the load 20.

The plurality of power supply panels 100, 200, 300, and 400 are one of the one or more first power conversion devices 110, 210, 310 and 410 according to the state of the one or more power supply sources 10. 2 The DC power may be supplied to the power conversion devices 120, 220, 320, and 420.

The plurality of power supply boards 100, 200, 300 and 400 are of the conversion devices 110, 210, 310 and 410 that supply the DC power to the second power conversion devices 120, 220, 320 and 420. When the power supply is interrupted, the DC power may be supplied to the second power conversion devices 120, 220, 320 and 420 through a conversion device other than the conversion devices 110, 210, 310, and 410.

In this case, the one or more first power conversion devices 110, 210, 310, and 410 in the shopping mall are a conversion device 110 that receives power from the battery power source B while the conversion device is switched to the other conversion device. The DC power may be supplied to the second power converters 120, 220, 320 and 420 through #2, 210#2, 310#2, and 410#2.

Each of the plurality of power boards 100, 200, 300 and 400 may preferably include three conversion devices connected to each of the one or more power supply sources 10.

Each of the plurality of conversion devices 110, 210, 310, and 410 included in each of the plurality of power panels 100, 200, 300, and 400 may have an output terminal from which the DC power is output to one.

Accordingly, the output terminals of each of the plurality of conversion devices 110, 210, 310 and 410 may form a DC converter through which the DC power flows.

The DC power converted by each of the plurality of conversion devices (110, 210, 310 and 410), the plurality of second power conversion through the output terminal of each of the plurality of conversion devices (110, 210, 310 and 410) Devices 120, 220, 320, and 420, respectively.

Each of the plurality of power boards 100, 200, 300 and 400, preferably, as shown in FIG. 4, includes three inverters 120, 220, 320 and 420, and three inverters 120, The driving power may be supplied to each of the three loads 20 through 220, 320, and 420.

Each of the plurality of power supply boards 100, 200, 300 and 400 is preferably, as shown in FIG. 4, the output terminal and the bus line of each of the plurality of conversion devices 110, 210, 310 and 410 Circuit breakers 130, 230, 330, and 430 may be provided in each of the converters to which (1) is connected to control the connection of the bus line 1.

Accordingly, in each of the plurality of power panels 100, 200, 300, and 400, each of the power terminals may be connected to the bus line 1 in common.

Each of the plurality of circuit breakers 130, 230, 330 and 430 is a DC circuit breaker that cuts off DC power, and may be disposed in a converter between the power terminal and the bus line 1 and provided.

Each of the plurality of circuit breakers 130, 230, 330 and 430 may be opened during normal operation and closed during operation, thereby controlling the connection between the output terminal and the bus line 1.

Accordingly, each of the plurality of power boards 100, 200, 300 and 400 may be connected to the bus line 1 through opening and closing of each of the plurality of circuit breakers 130, 230, 330, and 430.

The plurality of circuit breakers 130, 230, 330 and 430 are closed when the DC power is connected between the power terminal and the bus line 1, and the circuit breakers 130, 230, 330 and 430 are closed between the power terminal and the bus line 1. It can be opened if the DC power is interrupted.

The bus line 1 is a DC bus line through which DC power flows, and DC power delivered through the output terminals of each of the plurality of power panels 100, 200, 300, and 400 may flow.

That is, in the bus line 1, the DC power may flow according to the opening and closing of each of the plurality of circuit breakers 130, 230, 330, and 430.

The plurality of circuit breakers (130, 230, 330 and 430), when the supply of one or more of the plurality of power supply panels (100, 200, 300 and 400) is interrupted, the circuit breaker of the power supply panel and the The circuit breaker of the interrupted power panel and the adjacent power panel is closed, and the interrupted power panel and the adjacent power panel are connected to the bus line (1) so that the DC power is supplied from the adjacent power panel to the interrupted power panel. I can.

In this case, the interrupted power supply panel is supplied with the DC power from the converter connected to the battery power supply B until the power supply is stopped and the DC power conducted from the adjacent power supply panel is supplied. I can.

Each of the plurality of power boards 100, 200, 300, and 400 includes the plurality of conversion devices 110, 210, 310, and 410 included in each of the plurality of inverters 120, 220, 320 and 420. You can control and monitor the operation.

Each of the plurality of power boards 100, 200, 300, and 400 includes the plurality of conversion devices 110, 210, 310, and 410 included in each of the plurality of inverters 120, 220, 320 and 420. Depending on the result of controlling and monitoring the operation, it is possible to control the opening and closing of each of the plurality of breakers (130, 230, 330 and 430).

Each of the plurality of power boards 100, 200, 300, and 400 includes the plurality of conversion devices 110, 210, 310, and 410 included in each of the plurality of inverters 120, 220, 320 and 420. The result of controlling and monitoring the operation may be transmitted to the control device 600.

Each of the plurality of power boards 100, 200, 300, and 400 includes the plurality of conversion devices 110, 210, 310, and 410 included in each of the plurality of inverters 120, 220, 320 and 420. By controlling and monitoring the operation, it is possible to detect the state of the DC power and the driving power.

Each of the plurality of power supply panels 100, 200, 300, and 400 may detect states of the DC power and the driving power and transmit a detection result to the control device 600.

Each of the plurality of power boards 100, 200, 300, and 400 may receive power from one of the one or more power supply sources 10 and convert the power to the DC power.

That is, each of the plurality of power supply panels 100, 200, 300, and 400 may be selectively supplied with power from any one of the one or more power supply sources 10.

Each of the plurality of power boards 100, 200, 300, and 400 may receive power from one of the one or more power supply sources 10 and convert the power to the DC power according to a predetermined supply standard.

The supply criterion may be a criterion for priority of power supply of the one or more power supply sources 10.

The plurality of power supply panels 100, 200, 300, and 400 are selected by selecting any one of the plurality of conversion devices 110, 210, 310 and 410 according to the state of the one or more power supply sources 10 The DC power may be delivered to each of the plurality of inverters 120, 220, 320 and 420 by a conversion device.

That is, each of the plurality of power supply boards 100, 200, 300 and 400 is a conversion device selected according to the state of the one or more power supply sources 10, and the plurality of inverters 120, 220, 320 and 420 The DC power may be delivered to each.

The plurality of power supply panels 100, 200, 300 and 400 may be any one of a conversion device that is delivering the DC power to the plurality of inverters 120, 220, 320 and 420 and a power supply source corresponding to the conversion device When an abnormality occurs in the abnormality, the DC power may be transmitted to the plurality of inverters 120, 220, 320, and 420 to a conversion device other than the conversion device.

That is, each of the plurality of power boards 100, 200, 300, and 400, when an abnormality occurs in at least one of the conversion device transmitting the DC power and the power supply source corresponding to the conversion device, other than the conversion device. By switching to another conversion device, the DC power may be transmitted to the plurality of inverters 120, 220, 320 and 420 with the converted conversion device.

The plurality of power supply panels 100, 200, 300 and 400 may be any one of a conversion device that is delivering the DC power to the plurality of inverters 120, 220, 320 and 420 and a power supply source corresponding to the conversion device When an abnormality occurs in the abnormality, the power supply source and the conversion device supplying power may be switched so that other conversion devices other than the conversion device transmit the DC power to the plurality of inverters 120, 220, 320, and 420. .

Such a system 1000 monitors the state of at least one of the plurality of power boards 100, 200, 300 and 400 and the plurality of circuit breakers 130, 230, 330 and 4300, and the A control device 600 for controlling at least one of the plurality of power boards 100, 200, 300, and 400 and the plurality of circuit breakers 130, 230, 330, and 430 may be further included.

The plurality of power panels 100, 200, 300, and 400 for converting and supplying the DC power as described above may be controlled by the control device 600.

The control device 600 communicates with each of the plurality of power panels 100, 200, 300, and 400, based on state information received from each of the plurality of power panels 100, 200, 300, and 400. Each of the plurality of power boards 100, 200, 300, and 400 may be controlled.

For example, according to the state information of the DC power and the driving power received from each of the plurality of power supply panels 100, 200, 300, and 400, each of the plurality of power supply panels 100, 200, 300 and 400 Conversion and supply of DC power, and conversion and supply of the driving power may be controlled.

The control device 600 communicates with each of the plurality of power panels 100, 200, 300, and 400, based on state information received from each of the plurality of power panels 100, 200, 300, and 400. Conversion and supply of the driving power to each of the plurality of power panels 100, 200, 300 and 400, or the plurality of circuit breakers 130 included in each of the plurality of power panels 100, 200, 300 and 400, 230, 330 and 430) can be controlled.

The control device 600 may also detect the state of the one or more power supply sources 10 and the load 20, or the state of the one or more power supply sources 10 and the load 20 from an external communication means. By receiving information on, converting and supplying the driving power of each of the plurality of power panels 100, 200, 300 and 400 based on the state of the at least one power supply source 10 and the load 20, Alternatively, the plurality of circuit breakers 130, 230, 330 and 430 included in each of the plurality of power boards 100, 200, 300 and 400 may be controlled.

In this case, the control device 600 converts and supplies the driving power of each of the plurality of power panels 100, 200, 300 and 400, or the plurality of power panels 100, 200, 300 and 400, respectively By transmitting a control command for control of the plurality of circuit breakers (130, 230, 330 and 430) included in the plurality of power supply panels (100, 200, 300 and 400), respectively, the plurality of power supply panels (100, Control according to the control command may be performed through the controllers 140, 240, 340 and 440 included in each of the 200, 300 and 400.

For example, if an abnormality occurs in the entire system power supply G supplying power to the plurality of power supply panels 100, 200, 300 and 400, the power supply from the system power supply G is cut off. To switch to another supply source, the plurality of breakers (130, 230, 330, and 430) are opened, and a control command for converting and supplying the DC power by receiving power from a power source other than the system power source (G) is issued. By transmitting to the control units 140, 240, 340 and 440 included in each of the plurality of power boards 100, 200, 300 and 400, each of the plurality of circuit breakers 130, 230, 330 and 430 is opened, Control to convert and supply the DC power by receiving power from the bypass power supply P or the battery power supply B.

When an abnormality occurs in one or more of the plurality of power supply panels 100, 200, 300 and 400, the control device 600 includes a power supply panel in which the abnormality occurs and a circuit breaker 130, 230 of the power supply panel closest to the power supply panel. , 330, and 430 may be closed so that the abnormal power supply panel receives the DC power from the adjacent power supply panel through the bus line 1.

For example, when a failure occurs in the first power conversion device 110 of the first power supply panel 100 among the plurality of power supply panels 100, 200, 300 and 400, the bus line 1 The second power conversion device 120 of the first power supply panel 100 converts DC power converted by one of the conversion devices 210 of the second power supply panel 200 closest to the first power supply panel 100. ), closing the circuit breakers 130 and 230 of each of the first power supply panel 100 and the second power supply panel 200, and converts the at least one first power of the first power supply panel 100 The first power supply panel 100 is cut off the device 110 and the DC power converted by any one of the plurality of conversion devices 210 of the second power supply panel 200 is transferred through the bus line 1. ) To the first power supply panel 100 and the second power supply panel 200 to each of the first power supply panel 100 and the second power supply panel 200, Each of the circuit breakers 130 and 230 of the second power supply panel 200 is closed, and any one of the plurality of conversion devices 210 of the second power supply panel 200 supplies the DC power to the bus line (1). ) Through the control to supply to the second power conversion device 120 of the first power supply panel 100.

As such, when an abnormality occurs in one or more of the plurality of power panels 100, 200, 300, and 400, by controlling to receive the DC power from an adjacent power supply through the bus line 1, the plurality of Each of the power boards 100, 200, 300 and 400 may perform a UPS function between the plurality of power boards 100, 200, 300, and 400.

Accordingly, the power supply system 1000, even when an unexpected abnormality occurs in the one or more power supply sources 10, the plurality of power boards 100, 200, 300 and 400, and the load 20 Since the supply of the driving power to (20) can be continuously maintained, the operation of the load (20) can be maintained without interruption, and an appropriate and active power supply response to an occurrence of an abnormality can be made, and an abnormality occurs. The operation of the load 20 and control of the power supply system 1000 can be stably performed regardless of the type and degree of the load.

An example of the operation of the power supply system 1000 as described above may be performed as shown in FIGS. 5 to 8.

An example of operation as shown in FIGS. 5 to 8 is an example of operation when the power supply system 1000 includes five power panels 100, 200, 300, 400, and 500, and the power supply system 1000 may include less than 5, or 5 or more of the plurality of power supply panels 100, 200, 300, 400, and 500.

A preferred embodiment of the power supply system 1000 may include five power boards 100, 200, 300, 400 and 500 as shown in FIGS. 5 to 8, and hereinafter, the plurality of power boards The case where (100, 200, 300, 400 and 500) is 5 as shown in FIGS. 5 to 8 will be described as an example.

5 is a case in which each of the plurality of power boards 100, 200, 300, 400 and 500 receives power from the grid power G among the one or more power supply sources 10, in this case, the bypass power supply Power supply from (P) and the battery power (B) is cut off, and power is supplied through the system power (G) to convert in the order of the DC power and the driving power to be supplied to each of the loads 20. Can be.

An example of operation as illustrated in FIG. 5 is a case of a general operation in which power is supplied from the system power source G, and the normal operation of the power supply system 1000 may be performed in this manner.

6 is a case in which each of the plurality of power boards 100, 200, 300, 400 and 500 receives power from the bypass power supply P among the one or more power supply sources 10, and the system power G ), and in this case, the power supply from the system power G and the battery power B is cut off, and power is supplied through the bypass power P and the The DC power and the driving power may be converted in order to be supplied to each of the loads 20.

The example of operation as shown in FIG. 6 is a case of a special operation in which power is supplied from the bypass power source P to operate, and the special operation of the power supply system 1000 may be performed in this manner.

7 is a case in which each of the plurality of power boards 100, 200, 300, 400 and 500 receives power from the battery power B among the one or more power supply sources 10, and the system power G And a case in which an abnormality occurs in the bypass power supply P. In this case, power supply from the system power G and the bypass power P is cut off, and the battery power B Power may be supplied through the DC power and the driving power in order to be supplied to each of the loads 20.

An example of the operation illustrated in FIG. 7 is a case of a power failure operation in which power is supplied from the battery power source B, and the power failure operation of the power supply system 1000 may be performed in this manner.

8 is a case in which each of the plurality of power boards 100, 200, 300, 400, and 500 receives power from the emergency power source A among the one or more power supply sources 10, and the system power source G , This may be the case in which an abnormality occurs in the bypass power supply (P) and the battery power supply (B). In this case, the system power supply (G), the bypass power supply (P), and the battery power supply (B) Power supply from is cut off, and the emergency power source A may directly supply the driving power to each of the loads 20.

An example of driving as shown in FIG. 8 is a case of an emergency operation in which power is supplied from the emergency power source A to operate, and the emergency operation of the power supply system 1000 may be performed in this manner.

In this way, the power supply system 1000 may be operated by receiving power from the same power supply source, respectively, or the plurality of power supply panels 100, 200, 300, 400, and 500 Each of 200, 300, 400, and 500 may be operated by selectively receiving power from any one of the one or more power supply sources 10.

For example, the first and second power panels 100 and 200 are operated by receiving power from the system power supply G, and the third and fourth power supply panels 300 and 400 are provided with the bypass power supply P ), and the fifth power supply panel 500 may be operated by receiving power from the battery power source B.

In addition, each of the plurality of power boards 100, 200, 300, 400, and 500 may be operated by receiving power from one or more power supply sources 10.

For example, when an abnormality occurs in the first power supply panel 100 to supply the DC power from the second power supply panel 200 to the first power supply panel 100, the second power supply panel 200 The power supplied from the grid power G is converted into the DC power through the 2-1 conversion device 210#1 and transmitted to each of the plurality of inverters 220, and the bypass power P The power is further supplied from and converted into the DC power through the 2-3rd conversion device 210#3, and the converted by the 2-3rd conversion device 210#3 through the bus line (1). DC power may be delivered to each of the second power conversion devices 120 of the first power supply panel 100.

In the case of this example, by closing the circuit breakers 130 and 230 of each of the first power supply panel 100 and the second power supply panel 200, the first power supply panel 100 and the second power supply panel 200 is connected to the bus line 1, so that the DC power is supplied from the second power supply panel 200 to the first power supply panel 100 through the bus line 1. I can.

In this way, each of the plurality of power supply panels 100, 200, 300, 400 and 500 is operated by receiving power from one or more power supply sources 10, and thus the plurality of power supply panels 100, 200, 300, 400 and 500 ) Between power supply, that is, the UPS function between the plurality of power panels 100, 200, 300, 400 and 500 may be performed.

The embodiments of the power supply device and the power supply system according to the present invention as described above can be applied to a power supply device that supplies/uses DC power, a power supply system, and a method of operating the power supply system. In particular, it may be usefully applied to a DC UPS module and a power supply system having the same, and may be applied to a motor control panel that controls a plurality of motor loads, a motor control system, a motor driving system, and the like.

Although a specific embodiment according to the present invention has been described so far, various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be defined by being limited to the described embodiments, and should be defined not only by the claims to be described later, but also by the claims and equivalents.

As described above, although the present invention has been described by the limited embodiments and drawings, the present invention is not limited to the above embodiments, which is, if one of ordinary skill in the field to which the present invention belongs, various modifications and Transformation is possible. Accordingly, the idea of the present invention should be grasped only by the scope of the claims set forth below, and all equivalent or equivalent modifications thereof will be said to belong to the scope of the idea of the present invention.

10: power source 20: load
100 (200, 300 and 400): Power supply (power panel)
110 (210, 310 and 410): first power conversion device (converter)
120 (220, 320 and 420): second power conversion device (inverter)
130 (230, 330 and 430): breakers
140 (240, 340 and 440): control unit
600: control unit 1000: power supply system

Claims (28)

At least one first power conversion device for converting power supplied from at least one power supply source into DC power;
At least one second power conversion device converting the DC power into driving power and supplying it to a load; And
Includes; a power supply terminal to which the output terminal of the first power conversion device and the input terminal of the second power conversion device are connected, and a circuit breaker disposed between a bus line connected to the power supply terminal and through which the DC power passes; and
The circuit breaker,
The DC power supply, the driving power supply, the first power conversion device, and the opening and closing according to the state of at least one of the load, and connecting or controlling the DC power between the power terminal and the bus line. Power supply. The method of claim 1,
The at least one power supply source,
A power supply device comprising: a first AC power supply and a second AC power supply supplying AC power. The method of claim 2,
The at least one power supply source,
A battery for storing DC power; further includes,
When the supply of the DC power to the second power conversion device is stopped,
Power supply device, characterized in that the power stored in the battery is supplied to the first power conversion device while the supply of the DC power is restored. The method of claim 3,
If the DC power supply is interrupted,
Characterized in that at least one of interruption of power supply of the first AC power source and the second AC power source, and an operation interruption of the at least one first power conversion device receiving power from the first AC power source and the second AC power source. Power supply. The method of claim 3,
The battery,
After the supply of the DC power is stopped, the stored power is supplied to the first power conversion device in an uninterrupted manner until the supply of the DC power is switched and restored. The method of claim 3,
The at least one first power conversion device,
And first to third conversion devices connected to each of the first AC power, the battery, and the second AC power to receive power from a connected power supply source. The method of claim 6,
The at least one first power conversion device,
Any one of the first to third conversion devices is operated to supply the DC power to the second power conversion device. The method of claim 7,
When the power supply of the conversion device that supplies the DC power to the second power conversion device is stopped,
The at least one first power conversion device,
And supplying the DC power to the second power conversion device through a conversion device other than the conversion device. The method of claim 8,
When the power supply of the converter is interrupted,
The power supply device, characterized in that when an abnormal condition is detected in at least one of the conversion device, a supply source connected to the conversion device, and a rating of the DC power supply. The method of claim 8,
At least one first power conversion device in the mall,
And supplying the DC power to the second power conversion device through the second conversion device while the conversion device is switched to the other conversion device. The method of claim 3,
The at least one state,
When the DC power is changed from the initial state, the driving power is changed from the initial state, the operation state of the first power conversion device is changed, and the driving state of the load is changed. Power supply device characterized by. The method of claim 3,
The circuit breaker,
When the DC power is connected between the power terminal and the bus line, the power supply device is closed, and when the DC power is intercepted between the power terminal and the bus line, the power supply device is opened. The method of claim 3,
The circuit breaker,
When the power supply of the one or more first power conversion devices is stopped, or the power supply of another power supply device connected to the bus line is stopped,
And the power supply terminal and the bus line are closed to be connected to each other to conduct the DC power from the power terminal to the bus line or from the bus line to the power supply terminal. The method of claim 13,
The circuit breaker,
When the power supply of the converter connected to the first AC power and the second AC power is stopped,
The power supply device, characterized in that the power supply terminal and the bus line is closed so as to be connected, and conducts the DC power from the bus line to the power supply terminal to be supplied to the second power conversion device. The method of claim 14,
The conversion device connected to the battery,
Until the power supply of the conversion device connected to the first AC power and the second AC power is stopped and the DC power conducted from the bus line is supplied to the second power conversion device, the second power conversion device Power supply device, characterized in that supplying the DC power to the. The method according to any one of claims 1 to 15,
Controlling the at least one first power conversion device, the second power conversion device, and the circuit breaker,
The one or more power supply sources, the one or more first power conversion devices, the DC power supply, the driving power supply, and the at least one abnormal state of the load are monitored so that the power terminal and the bus line are connected according to a monitoring result. A control unit for controlling the circuit breaker; power supply device further comprising a. A plurality of power boards converting power supplied from one or more power supply sources into DC power, converting the DC power into driving power of the load, and supplying the power to the load;
A bus line through which a power terminal through which the DC power is input/output is connected to each of the plurality of power boards to conduct the DC power converted from the plurality of power boards; And
Includes; a plurality of circuit breakers disposed between each of the power terminals and the bus line,
The plurality of circuit breakers,
The power supply system according to claim 1, wherein the DC power is connected or disconnected between the power terminal and the bus line by differently opening and closing according to an operation state of at least one of the plurality of power panels. The method of claim 17,
The at least one power supply source,
A first AC power supply and a second AC power supply supplying AC power; And
A battery power source that stores DC power and supplies the stored power to the plurality of power panels while the power supply is switched and restored when the power supply of the first AC power and the second AC power is stopped. Power supply system, characterized in that. The method of claim 18,
The battery power is,
After the power supply is stopped, the stored power is supplied to the plurality of power boards without a step until the power supply is switched and restored. The method of claim 18,
The at least one power supply source,
When the power supply of the first AC power, the second AC power, and the battery power is stopped,
An emergency power supply for supplying emergency power generation to the load; power supply system further comprising a. The method of claim 18,
Each of the plurality of power boards,
At least one first power conversion device for converting power supplied from the at least one power supply source into the DC power source; And
And a second power conversion device converting the DC power supplied from the at least one first power conversion device into the driving power and supplying it to the load. The method of claim 21,
The plurality of power boards,
And supplying the DC power to the second power conversion device by one of the one or more first power conversion devices according to the state of the at least one power supply source. The method of claim 22,
The plurality of power boards,
When the power supply of the conversion device that supplies the DC power to the second power conversion device is stopped,
And supplying the DC power to the second power conversion device through a conversion device other than the conversion device. The method of claim 23,
At least one first power conversion device in the mall,
And supplying the DC power to the second power conversion device through a conversion device receiving power from the battery power source while the conversion device is switched to the other conversion device. The method of claim 18,
The plurality of circuit breakers,
A power supply system, characterized in that the power supply system is closed when the DC power is connected between the power terminal and the bus line, and is opened when the DC power is intercepted between the power terminal and the bus line. The method of claim 18,
The plurality of circuit breakers,
When one or more of the plurality of power boards are cut off,
The breaker of the power supply panel in which the power supply is interrupted and the circuit breaker of the power supply panel adjacent to the interrupted power supply panel are closed, and the interrupted power supply panel and the adjacent power supply panel are connected to the bus line, and the interrupted power supply panel from the adjacent power supply panel Power supply system, characterized in that to supply the DC power. The method of claim 26,
The interrupted power panel,
The power supply system, characterized in that the DC power is supplied from a converter connected to the battery power until the power supply is stopped and the DC power conducted from the adjacent power supply panel is supplied. The method according to any one of claims 17 to 27,
And a control device that monitors the state of at least one of the plurality of power panels and the plurality of circuit breakers, and controls at least one of the plurality of power panels and the plurality of circuit breakers according to the monitoring result. Power supply system.

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