KR101517566B1 - Hybrid electricity generator for emergency based on battery - Google Patents

Abstract

The present invention relates to a battery-based hybrid emergency power generator. The present invention relates to a battery-powered hybrid emergency power generator for storing a commercial power source used for charging a battery through a charger in a battery through a charger, and for providing the commercial power when the power charge for each hour exceeds a preset threshold value The power is supplied to the general load by converting the power supplied from the battery into an AC voltage. When the storage capacity of the battery is detected to be equal to or lower than a preset threshold ratio at the time of power transmission with the system power of the battery, A grid-connected inverter (On Grid Invert); A stand-alone inverter (Off Grid Invert) which converts power stored in the battery into an AC voltage and supplies the battery to an important load, does not need to supply power stored in the battery to the critical load, or stops the operation when the battery is charged; And a switch (UPS) configured to separate power supplied from the commercial power supply and power supplied from the independent inverter when the storage capacity of the battery is detected to be equal to or less than a preset threshold ratio; .
As a result, it is possible to construct a compact EMS and / or an ESS capable of automatically transmitting power when time or power is required, and transmitting the battery power to the system through a constant current system (grid-connected inverter). In addition, the present invention provides a technology capable of transmitting power stored in a battery to a commercial power source in consideration of the possibility of causing a difference in electric power charges by time slot that may occur in the future. In addition, in the present invention, when the power of the battery is converted into a constant current source and transmitted to the grid-connected inverter, the grid-connected inverter transmits power of the battery to the grid to produce and transmit electric power, It is possible to realize the interruption of the transmission automatically.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a battery-based hybrid emergency power generator,

The present invention relates to a battery-based hybrid emergency power generator, and more particularly, to a battery-powered hybrid emergency power generator which is capable of automatically transmitting power when time or power is required, management system (ESS) and / or an ESS (Energy Storage System).

 Between 2000 and 2012, while our economy grew by about 70%, total energy consumption increased by about 38% and power consumption by about 93%. From 2000 to 2010, power consumption (an annual average of 5.3% increase) is more than five times faster than the OECD average (annual average 1.0% increase).

On the other hand, energy management system (EMS: Energy Management System) and Energy Storage System (ESS: Energy Saving System), which store commercial power and send it to the market when necessary, Interest is growing.

The Energy Management System (EMS) is an integrated energy management model that optimizes energy use through energy consumption measurement and flow control for buildings, factories, and facilities so that energy consumers can scientifically manage and save energy.

On the other hand, the energy storage system (ESS) is a device that stores electric power and uses it when needed, thereby improving the efficiency of electric power utilization and supplying high quality electric power to electric power stations, substations, buildings and factories.

Such an energy management system (EMS) and an energy storage system (ESS: Energy Storage System) are mainly formed as a large-sized system, and there are limitations on the installation, so that a technology development for small EMS and ESS is required.

[Related Technical Literature]

1. Hybrid power supply system (HYBRID POWER SUPPLY SYSTEM) (Patent Application No. 10-2010-0083328)

2. HOME ENERGY MANAGEMENT APPARATUS AND METHOD FOR INTERWORKING WITH RENEWABLE ENERGY (Patent Application No. 10-2012-0013102)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a small EMS and / or ESS capable of automatically transmitting electric power when time or power is required and transmitting the battery power to the system through a constant current system (grid- And to provide a battery-based hybrid emergency power generator for installation.

In addition, the present invention provides a battery-based hybrid emergency power generator in which power stored in a battery can be transmitted to a commercial power source in consideration of the possibility of causing a difference in electric power charges by time.

In addition, according to the present invention, when the power of a battery is converted into a constant current source and transmitted to the grid-connected inverter, the grid-connected inverter transmits power of the battery to the grid to produce and transmit electric power. When the storage capacity of the battery drops below a certain rate Based hybrid emergency power generator in order to automatically implement the transmission interruption.

However, the objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the battery-based hybrid emergency power generator according to the first embodiment of the present invention stores commercial power used for charging a battery through a charger in a battery through a charger, A battery-powered hybrid emergency power generator for commercial use when the charge exceeds a preset threshold value. The battery-powered hybrid emergency power generator includes a converter for converting the electric power supplied from the battery into an AC voltage and supplying the AC voltage to a general load, A grid-connected inverter for automatically stopping transmission when a storage capacity of the battery is detected to be less than a preset threshold ratio at the time of transmission; A stand-alone inverter (Off Grid Invert) which converts power stored in the battery into an AC voltage and supplies the battery to an important load, does not need to supply power stored in the battery to the critical load, or stops the operation when the battery is charged; And a switch (UPS) configured to separate power supplied from the commercial power supply and power supplied from the independent inverter when the storage capacity of the battery is detected to be equal to or less than a preset threshold ratio; .

At this time, when the voltage stored in the battery exceeds a predetermined threshold ratio, the switch (UPS) activates all the connections to the power supplied to the critical load and supplies the generated power to the critical load It is preferable to prevent the supply of electricity from being lost due to the critical load by interrupting the connection with the power supplied from the commercial power supply during an abnormal operation in which the voltage stored in the battery is lower than a preset threshold ratio.

In addition, the present invention relates to a solar cell corresponding to a power generation apparatus for generating electric power using a solar energy source; A first controller for stopping operation when power is not generated in the solar cell to minimize power consumed; Wherein the grid-connected inverter converts power stored in the battery supplied or produced from the commercial power source and the solar cell into an AC voltage and supplies the AC voltage to the general load, Preferably, the switch (UPS) is formed for separating the power supplied or produced from the commercial power supply and the solar cell and the power supplied from the stand-alone inverter when the storage capacity of the battery is less than a preset threshold ratio Do.

The present invention also relates to a diesel generator which is a power generation device for generating electric power by using an energy source of diesel; And a second controller for stopping operation of the diesel generator to minimize power consumption when the diesel generator is not powered, Wherein the grid-connected inverter converts power, which is supplied or produced from the commercial power supply, the solar battery, and the diesel generator, into the alternating-current voltage, and supplies the alternating- Wherein the switch disconnects the power supplied or produced from the commercial power supply and the diesel generator when the voltage stored in the battery is less than a predetermined threshold ratio and the power supplied from the independent inverter It is desirable to prevent a loss due to the critical load on the power supplied from the commercial power source and the diesel generator to the critical load.

In order to achieve the above object, the battery-based hybrid emergency power generator according to the first embodiment of the present invention converts electric power supplied from a commercial power source into an AC voltage and supplies the converted AC voltage for power sale. A grid-connected inverter (On Grid Invert) that performs an operation of transmitting power to the grid when the power consumption is greater than a threshold value and does not operate to charge the battery when the power consumption is less than a preset threshold value; And if the power consumption is greater than a preset threshold, activate all connections to the power supplied to the power system to supply the generated power, and conversely if the power consumption is below a predetermined threshold, A timer switch for disconnecting the connection to charge the battery; .

The battery-based hybrid emergency power generator according to an embodiment of the present invention not only transmits power automatically when time or power is required but also transmits a battery power through a constant-current system (grid-connected inverter) And / or ESS construction.

In addition, the battery-based hybrid emergency power generator according to another embodiment of the present invention provides a technique capable of transmitting power stored in a battery to a commercial power source in consideration of possible future power-rate differences.

In addition, when the battery-based hybrid emergency power generator according to another embodiment of the present invention converts the power of the battery into a constant current source and sends it to the grid-connected inverter, the grid-connected inverter transmits power of the battery to the grid, Production and transmission, and when the storage capacity of the battery falls below a certain level, the power supply can be automatically stopped.

1 is a diagram showing a whole system diagram of a battery-based hybrid emergency power generator 1 according to an embodiment of the present invention.
2 is a cross-sectional view of a battery-based hybrid emergency power generator 1 according to an embodiment of the present invention.
3 is a diagram showing a battery-based power sale dedicated hybrid emergency power generator 2 according to another embodiment of the present invention.
4 is a diagram showing a battery-based EMS (power regulation and emergency) type hybrid emergency power generator 3 according to another embodiment of the present invention.
5 is a diagram illustrating a battery-based solar EMS (power conditioning and emergency) type hybrid emergency power generator 4 according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description of preferred embodiments of the present invention will be given with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In the present specification, when any one element 'transmits' data or signals to another element, the element can transmit the data or signal directly to the other element, and through at least one other element Data or signal can be transmitted to another component.

The charger voltage 220V-22V, the battery voltage 24V, and the direct current load 24V in the battery-based hybrid emergency power supply generator 1 according to the present invention are not limited thereto. Depending on the need, the charger input voltage can be varied from 100V to 240V depending on the power supply condition, and the output voltage can be changed to 12V or 24V depending on the battery voltage.

1 is a diagram showing a whole system diagram of a battery-based hybrid emergency power generator 1 according to an embodiment of the present invention. 2 is a cross-sectional view of a battery-based hybrid emergency power generator 1 according to an embodiment of the present invention.

1 and 2, a battery-based hybrid emergency power generator 1 includes a charge controller unit 100, a battery charger 200, a status indicator 300, an inverter unit 400, and a switch (UPS) 500 are formed on the upper side and a battery 600 composed of the first battery 610 and the second battery 620 is formed at the lower end. Here, the case of the battery-based hybrid emergency power generator 1 is firmly formed so as to withstand the weight of the battery 600. In addition, a wheel is formed below the battery-based hybrid emergency power generator 1, which can withstand the weight and perform the function of making the movement convenient.

The connection between the solar cell 20 and the first controller 110, which will be described later, is made by a dedicated socket (MC4 socket).

Meanwhile, it is preferable that the battery-based hybrid emergency power generator 1 exposes two sockets so that the battery-based hybrid emergency power generator 1 can be connected to a general load 710 described later, and forms a cigar jack for a vehicle so as to be connectable with the DC load 730 . The battery 600 is formed by connecting a first battery 610 and a second battery 620 in parallel.

1, the battery-based hybrid emergency power generator 1 includes a commercial power source 10, a solar cell 20, a diesel generator 30, a charge controller unit 100, A 220V-24V charger 210, a status indicator (voltage current) 300, an inverter unit 400, a switch (UPS) 500, a battery (serial 24V system) 600 and a load 700. The battery-based hybrid emergency power generator 1 includes a function of directly transmitting power from the battery 600 to the grid as shown in FIG. As described above, in order to transmit the electric power of the battery 600 to the system, it includes a "constant current control function", a "voltage boosting function" and "a function of transmitting power to the system". Here, it is preferable that the system includes a function of tracking the voltage frequency of the system at the time of transmission.

The commercial power supply 10 is formed to charge the battery 600 through the 220V-24V charger 210 and the charging is automatically terminated by the 220V-24V charger 210 when the battery 600 is fully charged. On the contrary, the 220V-24V charger 210 controls the charging of the commercial power supply 10 to be automatically started when the voltage stored in the battery 600 becomes a voltage lower than a preset threshold value.

The solar cell 20 and the diesel generator 30 correspond to a power generating apparatus that generates electric power by using an energy source such as solar light and diesel corresponding to the option for the commercial power source 10. [

The solar cell 20 generates electric energy by using solar light, so that it can be easily installed in a home or a factory, and a plurality of modules can be separately provided to generate power as a power generation module.

The charge controller unit 100 includes a first controller 110 and a second controller 120. Each of the first controller 110 and the second controller 120 may be constituted by a converter or a rectifier circuit depending on the type of the solar cell 20 and the diesel generator 30. [

That is, the first controller 110 may include a converter for converting DC power to DC power when the solar cell 20 produces DC power, and the second controller 120 may include a diesel generator 30, The converter may include a converter for converting direct current power to direct current power when the direct current power is generated.

In the meantime, the first controller 110 performs maximum power point tracking (hereinafter, referred to as 'MPPT') in order to maximize the power produced by the solar cell 20 when the solar cell 20 generates solar power. ) MPPT converter that performs a control scheme. The MPPT control method is a technique commonly used in DC-AC power converters in PV systems, and it maintains the maximum power value delivered to the load, thereby performing an algorithm that avoids efficiency loss due to changes in temperature and irradiation dose. do.

It is preferable that each of the first controller 110 and the second controller 120 stops operation when there is no power generated from the solar cell 20 and the diesel generator 30 to minimize power consumption.

The status indicator (voltage current) 300 is preferably composed of a voltmeter and a remaining amount indicator to indicate the voltage and current in the state of the battery 600.

The inverter unit 400 includes a grid-connected inverter (On Grid Invert) 410 and a stand-alone inverter (Off Grid Invert) 420.

The grid-connected inverter 410 is supplied or produced from the commercial power supply 10, the solar battery 20, and the diesel generator 30, converts the electric power charged in the battery 600 into an AC voltage, It is preferable not to operate in order to supply power to the battery 700 and to operate the battery 600 when the grid is out of power and when the grid is restored.

The grid-connected inverter 410 includes a filter for removing harmonics from the AC voltage output to the grid connection, suppresses generation of reactive power, synchronizes the phase of the output AC voltage with the phase of the AC voltage output in the grid connection And a phase locked loop (PLL) circuit for providing a phase lock loop. In addition, the grid-connected inverter 410 may perform functions such as limiting the voltage fluctuation range, improving the power factor, removing direct current components, and protecting transient phenomena.

By installing a filter for eliminating harmonics in the grid-connected inverter 410, harmonics can be absorbed and removed, the fluidity of the system and the space problem between the capacitive lines can be solved, and the performance and lifetime Can be maintained for a long time.

The grid-connected inverter 410 performs power transmission by supplying power of the battery 600 as grid power, and when the storage capacity of the battery 600 is detected to be equal to or less than a preset threshold ratio, transmission is automatically stopped .

In the present invention, the first battery 610 for storing electric power and the second battery 610 for storing electric power are used in the off-grid inverter 420. The off- Converts the power stored in the battery 620 into an AC voltage, and supplies it to the critical load 720.

The stand-alone inverter 420 converts the power stored in the battery 600, supplied from the commercial power supply 10 and produced by the solar battery 20 and the diesel generator 30, into AC voltage and supplies the AC voltage to the load 700, It is preferable not to supply the power stored in the battery 600 to the critical load 720 or to suspend the operation when the battery 600 is charged.

The switch 500 is connected to the commercial power supply 10 and the diesel generator 30 of the battery-based hybrid emergency power supply generator 1 during an abnormal operation in which the voltage stored in the battery 600 is lower than a predetermined threshold ratio. Or the power produced and the power supplied from the stand-alone inverter 420, and may be provided for stabilizing the level of the input AC voltage, for example, a capacitor or the like.

Conversely, the switch (UPS) 500 activates all the connections to the power supplied to the critical load 720 during normal operation in which the voltage stored in the battery 600 exceeds a predetermined threshold ratio, and supplies the generated electricity to the critical loads 720 ). That is, the switch (UPS) 500 cuts off the connection between the commercial power supply 10 and the power supplied from the diesel generator 30 during the abnormal operation, so that the electricity generated from the commercial power supply 10 and the diesel generator 30 And is prevented from being lost by the critical load 720. In addition, it disconnects the connection with the normal load 710 and serves to supply the power of the battery 600 via the switch (UPS) 500 to the critical load 720.

The battery (serial 24V system) 600 receives and stores electric power supplied or generated from the commercial power supply 10, the solar battery 20 and the diesel generator 30 in the battery-based hybrid emergency power supply generator 1, And supplies power stored in the load 700. The battery 600 may include at least one battery 610 and 620 cells, and each battery cell 610 and 620 may include a plurality of bare cells. Such a battery (serial 24V system) 600 may be implemented with various types of battery cells, for example, a nickel-cadmium battery, a lead acid battery, a nickel metal hydride battery (NiMH) , A lithium ion battery, a lithium polymer battery, and the like.

The number of batteries 600 can be determined according to power capacity, design conditions, and the like. For example, when the power consumption of the load 700 is large, a plurality of batteries 600 may be provided. In the case where the power consumption of the load 700 is small, only one battery 600 may be provided .

The load 700 includes a general load 710, a critical load 720, and a 12V direct current load 730. More specifically, in the battery-based hybrid emergency power supply generator 1 according to the preferred embodiment of the present invention, the load 700 is divided into the general load 710, the critical load 720, and the other 12V DC load 730 And the general load 710 specifies household appliances such as a TV, a refrigerator and the like, and the critical load 720 specifies electricity necessary for living, that is, a lamp.

3 is a diagram showing a battery-based power sale dedicated hybrid emergency power generator 2 according to another embodiment of the present invention. 3, the battery-based electric power sale dedicated hybrid emergency power generator 2 includes a commercial power supply 10, a 220V-24V charger 210, an On Grid Invertor 410, a timer switch 510 And a battery (serial 24V system) A hybrid emergency power generator (2) dedicated to battery-based power sales utilizes a battery-based hybrid emergency power generator (1) and is dedicated to power sales. The hybrid emergency power generator (2) for battery-based power sales only stores power in the battery (600) when power is consumed in the system and when the power consumption is low in the holidays or in the middle of the night, , Stores in a time zone where the electricity rate is relatively low, and can be sold at a time when the electricity rate is relatively high.

The commercial power supply 10 is formed to charge the battery 600 through the 220V-24V charger 210 connected to the timer switch 510. The battery 600 is charged by the 220V-24V charger 210 The charging is terminated. On the contrary, the 220V-24V charger 210 controls the charging of the commercial power supply 10 to be automatically started when the voltage stored in the battery 600 becomes a voltage lower than a preset threshold value.

The grid-connected inverter (On Grid Invert) 410 converts an electric power supplied from the commercial power supply 10 into an AC voltage and supplies it to the power supply. When the power consumption is larger than a preset threshold value, And does not operate to charge the battery 600 when the power consumption is less than a predetermined threshold value.

The timer switch 510 activates all connections between the grid-connected inverter (On Grid Invert) 410 and the 220V-24V charger 210 to the power supplied to the power system when the power consumption is greater than a predetermined threshold, (On Grid Invert) 410 of the 220V-24V charger 210 to the grid interlock inverter (On Grid Invert) 410 when the power consumption is less than the preset threshold value , So that the battery 60 is charged.

4 is a diagram showing a battery-based EMS (power regulation and emergency) type hybrid emergency power generator 3 according to another embodiment of the present invention. Referring to FIG. 4, a battery-based EMS type hybrid emergency power generator 3 includes a commercial power supply 10, a 220V-24V charger 210, a status indicator (voltage current) 300, Unit 400, a switch (UPS) 500, a battery (serial 24V system) 600, and a load 700. A battery-based EMS (power regulation and emergency) type hybrid emergency power generator 3 utilizes the UPS function of the switch (UPS) 500.

4, the commercial power source 10 of the battery-based EMS type hybrid emergency power generator 3 is formed to charge the battery 600 through the 220V-24V charger 210. [ And the battery 600 is automatically charged by the 220V-24V charger 210 when the battery is fully charged. On the contrary, the 220V-24V charger 210 controls the charging of the commercial power supply 10 to be automatically started when the voltage stored in the battery 600 becomes a voltage lower than a preset threshold value.

The inverter unit 400 includes a grid-connected inverter (On Grid Invert) 410 and a stand-alone inverter (Off Grid Invert) 420.

The grid inverter (On Grid Invert) 410 converts power supplied from the battery 600 to an AC voltage and supplies the AC voltage to the general load 710. The grid inverter 410 performs operations during grid connection, The operation for charging the battery 600 is not performed. In addition, the grid-link inverter 410 transmits the generated power by transmitting the grid power of the battery 600, and automatically stops transmission when the storage capacity of the battery 600 is lower than a predetermined threshold ratio do.

In the present invention, a first battery 610 for storing electric power and a second battery 610 for storing electric power are provided in the off-grid inverter 420. The off- 620 into an AC voltage and supplies the AC voltage to the critical load 720.

The stand-alone inverter 420 converts the electric power stored in the battery 600 into an AC voltage and supplies the AC voltage to the critical load 720 so that it is not necessary to supply the electric power stored in the battery 600 to the critical load 720, ), The operation is stopped.

The switch (UPS) 500 is formed to separate the power supplied from the commercial power supply 10 and the power supplied from the stand-alone inverter 420 when the storage capacity of the battery 600 is lower than a preset threshold ratio .

When the voltage stored in the battery 600 exceeds a predetermined threshold ratio, the switch 500 activates all the connections to the power supplied to the critical load 720 in the normal operation, 720 and disconnects the power supply from the commercial power supply 10 during an abnormal operation in which the voltage stored in the battery 600 falls below a predetermined threshold ratio, To be lost.

5 is a diagram illustrating a battery-based solar EMS (power conditioning and emergency) type hybrid emergency power generator 4 according to another embodiment of the present invention. 5, a commercial power source 10, a solar cell 20, a first controller 110, a 220V-24V charger 210, a status indicator (voltage current) 300, an inverter unit 400, (UPS) 500, a battery (serial 24V system) 600, and a load 700.

The battery-based solar EMS (power regulation and emergency) type hybrid emergency power generator 4 includes the solar cell 20 to utilize the solar power, so that when the production amount by the solar cell 20 is large It can be transmitted as a system. Battery-based solar EMS (power regulation and emergency) type hybrid emergency power generators (4) are preferably formed for 1KW and 500W low power products rather than existing mass storage ESS (Energy Storage System).

5, the commercial power source 10 of the battery-based solar EMS (power regulation and emergency) type hybrid emergency power generator 4 is formed to charge the battery 600 through the 220V-24V charger 210 And the battery 600 is automatically charged by the 220V-24V charger 210 when the battery is fully charged. On the contrary, the 220V-24V charger 210 controls the charging of the commercial power supply 10 to be automatically started when the voltage stored in the battery 600 becomes a voltage lower than a preset threshold value.

The solar cell 20 corresponds to a power generating apparatus that generates electric power by using a solar energy source corresponding to the option for the commercial power source 10.

The first controller 110 may include a converter for converting direct current power to direct current power when the solar cell 20 produces direct current power. It is preferable that the first controller 110 stops operation when there is no power generated by the solar cell 20 to minimize power consumption.

The inverter unit 400 includes a grid-connected inverter (On Grid Invert) 410 and a stand-alone inverter (Off Grid Invert) 420.

The grid-connected inverters 410 are supplied from the commercial power source 10 and the solar cell 20 to convert the electric power stored in the battery 600 into an alternating-current voltage and supply the alternating-current voltage to the general load 710 And does not operate to charge the battery 600 when the system is out of power or when the system is restored. In addition, the grid-link inverter 410 transmits power supplied and produced by the grid power of the battery 600, and automatically stops transmission when the storage capacity of the battery 600 is less than a preset threshold ratio .

In the present invention, a first battery 610 for storing electric power and a second battery 610 for storing electric power are provided in the off-grid inverter 420. The off- 620 into an AC voltage and supplies the AC voltage to the critical load 720.

The stand-alone inverter 420 converts the electric power stored in the battery 600 into an AC voltage and supplies the AC voltage to the critical load 720 so that it is not necessary to supply the electric power stored in the battery 600 to the critical load 720, ), The operation is stopped.

When the storage capacity of the battery 600 is lower than a predetermined threshold ratio, the switch 500 switches between the power supplied or produced from the commercial power supply 10 and the solar battery 20 and the power supplied from the independent inverter 420 Lt; / RTI >

When the voltage stored in the battery 600 exceeds a predetermined threshold ratio, the switch 500 activates all the connections to the power supplied to the critical load 720 in the normal operation, 720 and disconnects the power supply from the commercial power supply 10 during an abnormal operation in which the voltage stored in the battery 600 falls below a predetermined threshold ratio, To be lost.

As described above, preferred embodiments of the present invention have been disclosed in the present specification and drawings, and although specific terms have been used, they have been used only in a general sense to easily describe the technical contents of the present invention and to facilitate understanding of the invention , And are not intended to limit the scope of the present invention. It is to be understood by those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

10: Commercial power supply
20: Solar cell
30: Diesel generator
100: Charge controller section
110: first controller
120: Second controller
200: Battery charger
210: 220V-24V charger
300: Status Indicator
400: Inverter section
410: Grid Inverters (On Grid Invert)
420: Off Grid Invert
500: Switch (UPS)
600: Battery
610: First battery
620: Second battery
700: Load
710: Normal load
720: Critical load
730: 12V DC load

Claims (5)

A battery-based hybrid emergency power generator for storing a commercial power source used for charging a battery through a charger in a battery through a charger, and for providing the commercial power source for commercial use when the power rate for each time zone exceeds a preset threshold value,
And a control unit for controlling the power of the battery to be supplied to the normal load when the storage capacity of the battery is less than a predetermined threshold ratio when the battery is supplied with the system power, On Grid Invert;
A stand-alone inverter (Off Grid Invert) which converts power stored in the battery into an AC voltage and supplies the battery to an important load, does not need to supply power stored in the battery to the critical load, or stops the operation when the battery is charged; And
Wherein the battery is formed to separate power supplied from the commercial power supply and power supplied from the stand-alone inverter when the storage capacity of the battery is less than a predetermined threshold ratio, wherein the voltage stored in the battery exceeds a preset threshold ratio The power supply unit supplies power to the critical load by activating all connections to the power supplied to the critical load in normal operation and supplies power from the commercial power supply during an abnormal operation in which the voltage stored in the battery is less than a predetermined threshold ratio. A switch (UPS) that cuts off the connection with power to prevent the supplied electricity from being lost by the critical load;
A solar cell corresponding to a power generating apparatus that generates electricity using a solar energy source; And
A first controller for stopping the operation when the power generated by the solar cell is absent and minimizing the power consumed;
A diesel generator which is a power generation device for generating electric power by using diesel as an energy source; And
A second controller for stopping the operation of the diesel generator to minimize power consumed by the diesel generator; , ≪ / RTI &
The grid-connected inverter converts power, which is supplied or produced from the commercial power source, the solar cell, and the diesel generator, into an alternating-current voltage, and supplies the alternating-
The switch (UPS) separates the power supplied or produced from the commercial power supply and the solar cell and the power supplied from the stand-alone inverter when the storage capacity of the battery is less than a preset threshold ratio, The power supplied from the commercial power source and the diesel generator and the power supplied from the independent inverter are separated from the commercial power source and the diesel generator so that the critical load To prevent the loss due to the critical load on the power supplied to the battery.
delete delete delete delete

Images