CN112648693B - Air conditioner and multi-channel PFC circuit control method - Google Patents
Air conditioner and multi-channel PFC circuit control method Download PDFInfo
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- CN112648693B CN112648693B CN202011505770.3A CN202011505770A CN112648693B CN 112648693 B CN112648693 B CN 112648693B CN 202011505770 A CN202011505770 A CN 202011505770A CN 112648693 B CN112648693 B CN 112648693B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention discloses an air conditioner and a control method of a multi-channel PFC circuit, wherein the air conditioner comprises a refrigerant circulation loop, a compressor, an outdoor heat exchanger, an indoor heat exchanger and the multi-channel PFC circuit, wherein the multi-channel PFC circuit comprises a plurality of PFC channels which are connected in parallel and is used for correcting an input current waveform; a controller configured to: acquiring input current of the multi-channel PFC circuit and start-stop information of each PFC channel; and controlling the opening of each PFC channel based on the input current and the start-stop information, thereby prolonging the service life of the multi-channel PFC circuit.
Description
Technical Field
The application relates to the field of air conditioner control, in particular to an air conditioner and a multi-channel PFC circuit control method.
Background
Currently, in order to reduce the switching loss of PFC power devices, multi-channel interleaved PFCs typically start and stop each channel in a fixed order according to current.
In the prior art, all channels of PFC are started or stopped according to a fixed sequence, for example, three channels of PFC only start a first channel under the condition of small current along with the rise of the current; restarting the second channel at medium current to perform double-channel control; the third channel is started under the condition of high current, and three-channel control is performed; and when the current is reduced, the third channel is stopped, the second channel is stopped, and the first channel is stopped according to the reverse sequence. In the three-channel PFC, the first channel starts to work first, stops working last, and has the longest working time, and the third channel is opposite, so that the devices with the same specifications of the three channels have different service lives, the devices with the longest working time are damaged first, and then the capacity of the whole PFC is reduced because the devices only with the two channels can not bear full-load operation, and the devices are damaged successively, so that the whole PFC circuit fails.
Therefore, how to extend the service life of the multi-channel PFC circuit is a technical problem to be solved at present.
Disclosure of Invention
The invention provides an air conditioner, which is used for solving the technical problem that the service life of a multi-channel PFC circuit cannot be prolonged in the prior art, and comprises:
a refrigerant circulation loop for circulating the refrigerant in a loop formed by the compressor, the condenser, the expansion valve, the evaporator and the four-way valve;
the compressor is used for compressing the low-temperature low-pressure refrigerant gas into high-temperature high-pressure refrigerant gas and discharging the high-temperature high-pressure refrigerant gas to the condenser;
an outdoor heat exchanger and an indoor heat exchanger, wherein one of the two heat exchangers works as a condenser and the other works as an evaporator;
the multi-channel PFC circuit comprises a plurality of parallel PFC channels and is used for correcting an input current waveform;
a controller configured to:
acquiring input current of the multi-channel PFC circuit and start-stop information of each PFC channel;
controlling the opening of each PFC channel based on the input current and the start-stop information;
the start-stop information comprises the current start-up quantity of the PFC channels, the last start-up condition of each PFC channel and the start-up duration of each PFC channel.
In some embodiments, the controller is configured to:
determining the quantity to be opened of the PFC channel based on the input current;
and controlling the opening of the PFC channel according to the quantity to be opened and the opening condition.
In some embodiments, the controller is configured to:
when the quantity to be started is larger than the current started quantity, starting the PFC channels from the last non-started PFC channel until all the PFC channels are started;
and when the quantity to be started is smaller than the current started quantity, starting to stop the PFC channels from the last started PFC channel until all the PFC channels are completely stopped.
In some embodiments, the controller is further configured to:
determining the quantity to be opened of the PFC channel based on the input current;
and controlling the start of the PFC channel based on the start time length and the quantity to be started.
In some embodiments, the controller is configured to:
when the quantity to be started is larger than the current started quantity, starting to start the PFC channels from the PFC channels with the minimum starting time length until all the PFC channels are started;
and when the quantity to be started is smaller than the current started quantity, starting to stop the PFC channels from the PFC channel with the largest starting time length until all the PFC channels are completely stopped.
In some embodiments, the controller is configured to:
and when the quantity to be started is equal to the current started quantity, keeping the start of each PFC channel.
Correspondingly, the invention also provides a control method of the multichannel PFC circuit, which is applied to an air conditioner comprising a refrigerant circulation loop, a compressor, an outdoor heat exchanger, an indoor heat exchanger, the multichannel PFC circuit and a controller, and comprises the following steps:
acquiring input current of the multi-channel PFC circuit and start-stop information of each PFC channel;
controlling the opening of each PFC channel based on the input current and the start-stop information;
the start-stop information comprises the current start-up quantity of the PFC channels, the last start-up condition of each PFC channel and the start-up duration of each PFC channel.
In some embodiments, the opening of each PFC channel is controlled based on the input current and the start-stop information, which specifically includes:
determining the quantity to be opened of the PFC channel based on the input current;
and controlling the opening of the PFC channel according to the opening quantity and the opening condition.
In some embodiments, the opening of the PFC is controlled according to the opening number and the opening condition, specifically:
when the quantity to be started is larger than the current started quantity, starting the PFC channels from the last non-started PFC channel until all the PFC channels are started;
and when the quantity to be started is smaller than the current started quantity, starting to stop the PFC channels from the last started PFC channel until all the PFC channels are completely stopped.
In some embodiments, the opening of each PFC channel is controlled based on the input current and the start-stop information, which specifically includes:
determining the quantity to be opened of the PFC channel based on the input current;
and controlling the start of the PFC channel based on the start time length and the quantity to be started.
Compared with the prior art, the application has the following beneficial effects:
the invention discloses an air conditioner and a fault judging method of a single-phase motor for the air conditioner, wherein the air conditioner comprises a refrigerant circulation loop, a compressor, an outdoor heat exchanger, an indoor heat exchanger and a multi-channel PFC circuit, wherein the multi-channel PFC circuit comprises a plurality of PFC channels which are connected in parallel and is used for correcting an input current waveform; a controller configured to: acquiring input current of the multi-channel PFC circuit and start-stop information of each PFC channel; and controlling the opening of each PFC channel based on the input current and the start-stop information, wherein the start-stop information comprises the current opening quantity of the PFC channels, the last opening condition of each PFC channel and the opening duration of each PFC channel, so that the difference of the service lives of a plurality of PFC channel devices with the same specification is avoided, and the service life of a multi-channel PFC circuit is prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a dual-channel PFC circuit according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a three-channel PFC circuit according to an embodiment of the present application;
fig. 3 is a schematic flow chart of a control method of a dual-channel PFC circuit according to an embodiment of the present application;
fig. 4 is a schematic flow chart of a three-channel PFC circuit control method according to an embodiment of the present application;
fig. 5 is a schematic flow chart of a control method of a multi-channel PFC circuit according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
The air conditioner in this application performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies a refrigerant to the air that has been conditioned and heat exchanged.
The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator may achieve a cooling effect by exchanging heat with a material to be cooled using latent heat of evaporation of a refrigerant. Throughout the cycle, the air conditioner may adjust the temperature of the indoor space.
An outdoor unit of an air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, an indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.
The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater of a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler of a cooling mode.
The multi-channel PFC circuit includes a plurality of parallel PFC channels for correcting an input current waveform, as shown in fig. 1, the dual-channel PFC circuit includes two parallel PFC channels, where the first channel includes a first inductor L1, a first triode Q1, a first diode D1, and a first resistor R1, the second channel includes a second inductor L2, a second triode Q2, a second diode D2, and a second resistor R2, as shown in fig. 2, the three-channel PFC circuit includes three parallel PFC channels, where the first channel includes a first inductor L1, a first triode Q1, a first diode D1, and a first resistor R1, the second channel includes a second inductor L2, a second triode Q2, a second diode D2, and a second resistor R2, and the third channel includes a third inductor L3, a third triode Q3, a third diode D3, and a third resistor R3, and each PFC channel controls the channel to be turned on by a triode connected to a controller.
To further describe the solution of the present application, in one example of the present application, the air conditioner includes:
a refrigerant circulation loop for circulating the refrigerant in a loop formed by the compressor, the condenser, the expansion valve, the evaporator and the four-way valve;
the compressor is used for compressing the low-temperature low-pressure refrigerant gas into high-temperature high-pressure refrigerant gas and discharging the high-temperature high-pressure refrigerant gas to the condenser;
an outdoor heat exchanger and an indoor heat exchanger, wherein one of the two heat exchangers works as a condenser and the other works as an evaporator;
the multi-channel PFC circuit comprises a plurality of parallel PFC channels and is used for correcting an input current waveform;
a controller configured to:
acquiring input current of the multi-channel PFC circuit and start-stop information of each PFC channel;
controlling the opening of each PFC channel based on the input current and the start-stop information;
the start-stop information comprises the current start-up quantity of the PFC channels, the last start-up condition of each PFC channel and the start-up duration of each PFC channel.
In the embodiment of the application, the controller firstly acquires the input current of the multi-channel PFC circuit and the start-stop information of each PFC channel, wherein the start-stop information comprises the current start-up quantity of the PFC channels, the last start-up condition of each PFC channel and the start-up duration of each PFC channel, optionally, the start-stop information of each PFC channel is recorded through the memory module, and the controller acquires the start-stop information of each PFC channel from the memory module. After the input current and the start-stop information are obtained, the start of each PFC channel is controlled according to the magnitude of the input current and the start-stop information.
To reasonably control the opening of the respective PFC tunnel, in some embodiments, the controller is configured to:
determining the quantity to be opened of the PFC channel based on the input current;
and controlling the opening of the PFC channel according to the quantity to be opened and the opening condition.
In this embodiment, the number of PFC channels to be opened is determined according to the input current of the multi-channel PFC circuit, and in general, the larger the input current is, the larger the number of PFC channels to be opened is, and after determining the number to be opened, the opening of the PFC channels is controlled according to the number to be opened and the last opening condition of each PFC channel.
It should be noted that the solution of the above preferred embodiment is only one specific implementation solution provided in the present application, and other methods for controlling the opening of each PFC channel based on the input current and the start-stop information are all within the protection scope of the present application.
To reasonably control the opening of the PFC tunnel, in some embodiments, the controller is configured to:
when the quantity to be started is larger than the current started quantity, starting the PFC channels from the last non-started PFC channel until all the PFC channels are started;
and when the quantity to be started is smaller than the current started quantity, starting to stop the PFC channels from the last started PFC channel until all the PFC channels are completely stopped.
In this embodiment, the number of PFC channels to be opened is compared with the current number of PFC channels to be opened, and when the number of PFC channels to be opened is greater than the current number of PFC channels to be opened, it is indicated that the number of PFC channels to be opened needs to be increased, and at this time, the PFC channels are preferentially opened from the PFC channels which are not opened last time until all the PFC channels are opened, so that the PFC channels opened each time are avoided as much as possible as the PFC channels opened last time, the time for opening each PFC channel is as much as possible, and the advanced damage caused by excessive use of a certain PFC channel is avoided, thereby affecting the service life of the whole PFC circuit. When the number to be started is smaller than the current number, the starting number of the PFC channels needs to be reduced, and the PFC channels are stopped from the last started PFC channels preferentially until all the PFC channels are stopped, so that the last started PFC channels can be guaranteed to be stopped preferentially.
It should be noted that the solution of the above preferred embodiment is only one specific implementation solution provided in the present application, and other methods for controlling the opening of the PFC tunnel according to the number to be opened and the opening condition all belong to the protection scope of the present application.
To further reasonably control the opening of the respective PFC tunnel, in some embodiments, the controller is further configured to:
determining the quantity to be opened of the PFC channel based on the input current;
and determining the opening of the PFC channel based on the opening duration and the quantity to be opened.
In this embodiment, the controller determines the number of PFC channels to be opened according to the input current of the multi-channel PFC circuit, and in general, the number of PFC channels to be opened is proportional to the magnitude of the input current, and the controller controls the opening of the PFC channels according to the opening duration of each PFC channel and the number of PFC channels to be opened. Because the time for opening the PFC channels is different each time, the opening of the PFC channels is controlled by the opening time of each PFC channel, so that the working time of each PFC channel can be further balanced.
It should be noted that the solution of the above preferred embodiment is only one specific implementation solution provided in the present application, and other methods for controlling the opening of each PFC channel based on the input current and the start-stop information are all within the protection scope of the present application.
To reasonably control the opening of the respective PFC tunnel, in some embodiments, the controller is configured to:
when the quantity to be started is larger than the current started quantity, starting to start the PFC channels from the PFC channels with the minimum starting time length until all the PFC channels are started;
and when the quantity to be started is smaller than the current started quantity, starting to stop the PFC channels from the PFC channel with the largest starting time length until all the PFC channels are completely stopped.
In this embodiment, the to-be-opened number of PFC channels is compared with the current opened number of PFC channels, and when the to-be-opened number is greater than the current opened number, it is indicated that the opened number of PFC channels needs to be increased, and at this time, the PFC channels are started from the PFC channel with the minimum opening duration until all the PFC channels are completely opened, so that it is ensured that the opening duration of each PFC channel is the same as possible, and when the to-be-opened number is less than the current opened number, it is indicated that the opened number of PFC channels needs to be reduced, and at this time, the PFC channels are stopped from the PFC channel with the maximum opening duration until all the PFC channels are completely stopped.
It should be noted that, the solution of the above preferred embodiment is only one specific implementation solution provided in the present application, and other methods for controlling the opening of the PFC tunnel based on the opening duration and the number to be opened all belong to the protection scope of the present application.
To ensure current and voltage stabilization of the multi-channel PFC circuit, in some embodiments, the controller is configured to:
and when the quantity to be started is equal to the current started quantity, keeping the start of each PFC channel.
In this embodiment, in order to prevent the switching of the PFC channels from causing larger fluctuations in current and voltage, the switching is performed only between different opening numbers, and different combinations of the same opening number are not switched, that is, when the number of PFC channels to be opened is equal to the current number of PFC channels already opened, the opening of each PFC channel is maintained, and at this time, the opened PFC channels are not changed.
It should be noted that the solution of the above preferred embodiment is only one specific implementation solution provided in the present application, and other methods for controlling the opening of each PFC channel based on the input current and the start-stop information are all within the protection scope of the present application.
The invention discloses an air conditioner and a fault judging method of a single-phase motor for the air conditioner, wherein the air conditioner comprises a refrigerant circulation loop, a compressor, an outdoor heat exchanger, an indoor heat exchanger and a multi-channel PFC circuit, wherein the multi-channel PFC circuit comprises a plurality of PFC channels which are connected in parallel and is used for correcting an input current waveform; a controller configured to: acquiring input current of the multi-channel PFC circuit and start-stop information of each PFC channel; and controlling the opening of each PFC channel based on the input current and the start-stop information, wherein the start-stop information comprises the current opening quantity of the PFC channels, the last opening condition of each PFC channel and the opening duration of each PFC channel, so that the difference of the service lives of a plurality of PFC channel devices with the same specification is avoided, and the service life of a multi-channel PFC circuit is prolonged.
In order to further explain the technical idea of the present invention, the present invention also provides a multi-channel PFC circuit control method, which is applied to an air conditioner including a refrigerant circulation loop, a compressor, an outdoor heat exchanger, an indoor heat exchanger, a multi-channel PFC circuit and a controller, as shown in fig. 5, and the specific steps of the method are as follows:
s101, acquiring input current of the multi-channel PFC circuit and start-stop information of each PFC channel.
In the step, input current of a multi-channel PFC circuit and start-stop information of each PFC channel are acquired first, wherein the start-stop information comprises the current start number of the PFC channels, the last start condition of each PFC channel and the start duration of each PFC channel.
S102, controlling the opening of each PFC channel based on the input current and the start-stop information.
In the step, after the input current of the multi-channel PFC circuit and the start-stop information of each PFC channel are obtained, the start of each PFC channel is controlled according to the input current and the start-stop information.
In order to reasonably control the opening of each PFC channel, in some embodiments, the opening of each PFC channel is controlled based on the input current and the start-stop information, which is specifically:
determining the quantity to be opened of the PFC channel based on the input current;
and controlling the opening of the PFC channel according to the opening quantity and the opening condition.
Specifically, the number of PFC channels to be opened is determined according to the input current of the multi-channel PFC circuit, and in general, the larger the input current is, the larger the number of PFC channels to be opened is, and after the number of PFC channels to be opened is determined, the opening of the PFC channels is controlled according to the number of PFC channels to be opened and the last opening condition of each PFC channel. Alternatively, the number of PFC channels to be opened may also be determined by the voltages at the two ends of the multi-path PFC circuit, which are all within the scope of protection of the present application.
It should be noted that the solution of the above preferred embodiment is only one specific implementation solution provided in the present application, and other methods for controlling the opening of each PFC channel based on the input current and the start-stop information are all within the protection scope of the present application.
In order to reasonably control the opening of the PFC tunnel, in some embodiments, the opening of the PFC is controlled according to the opening number and the opening condition, which specifically includes:
when the quantity to be started is larger than the current started quantity, starting the PFC channels from the last non-started PFC channel until all the PFC channels are started;
and when the quantity to be started is smaller than the current started quantity, starting to stop the PFC channels from the last started PFC channel until all the PFC channels are completely stopped.
In this embodiment, the number of PFC channels to be opened is compared with the current number of PFC channels to be opened, and when the number of PFC channels to be opened is greater than the current number of PFC channels to be opened, it is indicated that the number of PFC channels to be opened needs to be increased, and at this time, the PFC channels are preferentially opened from the PFC channels which are not opened last time until all the PFC channels are completely opened, so that the PFC channels which are opened each time are avoided as much as possible as the PFC channels which are opened last time, the time for opening each PFC channel is as much as possible, and when the number of PFC channels to be opened is less than the current number of PFC channels to be opened, it is indicated that the number of PFC channels to be opened needs to be reduced, and at this time, the PFC channels are preferentially stopped from the PFC channels which are opened last time until all the PFC channels are completely stopped, so that the PFC channels which are opened last time can be ensured to be preferentially at rest.
As shown in fig. 3 and fig. 4, the opening of each PFC channel is controlled according to the arrow direction, wherein 0 represents that the PFC channel is stopped, 1 represents that the PFC channel is opened, and when the number of PFC channels is two, for example, (2) the number of PFC channels to be opened is greater than the current number of PFC channels to be opened from all stopping to single channel starting, and 10 represents that the last PFC channel is opened before, so that the PFC channel opening is controlled to be 01 (the last PFC channel is opened), that is, the last PFC channel is preferentially opened. When the PFC channel number is three, for example, (6), from the dual channel start to the single channel start, i.e. the number to be started is smaller than the current number already started, 100 represents that the last opened is the forefront channel, so this time the PFC channel is controlled to be opened to 010 (stop the forefront channel), i.e. the last opened channel is preferably stopped.
It should be noted that the solution of the above preferred embodiment is only one specific implementation solution proposed in the present application, and other methods for controlling the start of the PFC according to the start number and the start condition are all within the protection scope of the present application.
In order to further reasonably control the opening of each PFC channel, in some embodiments, the opening of each PFC channel is controlled based on the input current and the start-stop information, which is specifically:
determining the quantity to be opened of the PFC channel based on the input current;
and controlling the start of the PFC channel based on the start time length and the quantity to be started.
Specifically, the number of PFC channels to be opened is determined according to the input current of the multi-channel PFC circuit, in general, the number of PFC channels to be opened is in direct proportion to the magnitude of the input current, and the controller controls the opening of the PFC channels according to the opening duration of each PFC channel and the number of PFC channels to be opened. Because the time for opening the PFC channels each time is possibly different, the opening of the PFC channels is controlled by the opening time of each PFC channel, so that the working time of each PFC channel can be further balanced, and the phenomenon that a certain PFC channel is excessively used and damaged in advance is avoided, thereby influencing the service life of the whole PFC circuit.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, one of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not drive the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. An air conditioner, comprising:
a refrigerant circulation loop for circulating the refrigerant in a loop formed by the compressor, the condenser, the expansion valve, the evaporator and the four-way valve;
the compressor is used for compressing the low-temperature low-pressure refrigerant gas into high-temperature high-pressure refrigerant gas and discharging the high-temperature high-pressure refrigerant gas to the condenser;
an outdoor heat exchanger and an indoor heat exchanger, wherein one of the two heat exchangers works as a condenser and the other works as an evaporator;
the multi-channel PFC circuit comprises a plurality of parallel PFC channels and is used for correcting an input current waveform;
a controller configured to:
acquiring input current of the multi-channel PFC circuit and start-stop information of each PFC channel;
controlling the opening of each PFC channel based on the input current and the start-stop information;
the start-stop information comprises the current start-up quantity of the PFC channels, the last start-up condition of each PFC channel and the start-up duration of each PFC channel.
2. The air conditioner of claim 1, wherein the controller is configured to:
determining the quantity to be opened of the PFC channel based on the input current;
and controlling the opening of the PFC channel according to the quantity to be opened and the opening condition.
3. The air conditioner of claim 2, wherein the controller is configured to:
when the quantity to be started is larger than the current started quantity, starting the PFC channels from the last non-started PFC channel until all the PFC channels are started;
and when the quantity to be started is smaller than the current started quantity, starting to stop the PFC channels from the last started PFC channel until all the PFC channels are completely stopped.
4. The air conditioner of claim 1, wherein the controller is further configured to:
determining the quantity to be opened of the PFC channel based on the input current;
and controlling the start of the PFC channel based on the start time length and the quantity to be started.
5. The air conditioner of claim 4, wherein the controller is configured to:
when the quantity to be started is larger than the current started quantity, starting to start the PFC channels from the PFC channels with the minimum starting time length until all the PFC channels are started;
and when the quantity to be started is smaller than the current started quantity, starting to stop the PFC channels from the PFC channel with the largest starting time length until all the PFC channels are completely stopped.
6. The air conditioner of claim 2 or 4, wherein the controller is configured to:
and when the quantity to be started is equal to the current started quantity, keeping the start of each PFC channel.
7. A multi-channel PFC circuit control method, which is applied to an air conditioner including a refrigerant circulation circuit, a compressor, an outdoor heat exchanger and an indoor heat exchanger, a multi-channel PFC circuit, and a controller, the method comprising:
acquiring input current of the multi-channel PFC circuit and start-stop information of each PFC channel;
controlling the opening of each PFC channel based on the input current and the start-stop information;
the start-stop information comprises the current start-up quantity of the PFC channels, the last start-up condition of each PFC channel and the start-up duration of each PFC channel.
8. The method of claim 7, wherein controlling opening of each PFC pass based on the input current and the start-stop information is specifically:
determining the quantity to be opened of the PFC channel based on the input current;
and controlling the opening of the PFC channel according to the opening quantity and the opening condition.
9. The method of claim 8, wherein controlling the PFC to turn on based on the turn-on number and the turn-on condition is specifically:
when the quantity to be started is larger than the current started quantity, starting the PFC channels from the last non-started PFC channel until all the PFC channels are started;
and when the quantity to be started is smaller than the current started quantity, starting to stop the PFC channels from the last started PFC channel until all the PFC channels are completely stopped.
10. The method of claim 7, wherein controlling opening of each PFC pass based on the input current and the start-stop information is specifically:
determining the quantity to be opened of the PFC channel based on the input current;
and controlling the start of the PFC channel based on the start time length and the quantity to be started.
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Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0627870A2 (en) * | 1993-06-01 | 1994-12-07 | ABBPATENT GmbH | Method for triggering/regulating at least two parallel resonant circuit converters |
| KR20030050930A (en) * | 2001-12-19 | 2003-06-25 | 주식회사 엘지이아이 | A power factor control circuit of air-conditioner |
| CN201903575U (en) * | 2010-12-24 | 2011-07-20 | 海信（山东）空调有限公司 | Direct current detection circuit and inverter air-conditioner applying same |
| JP2013240274A (en) * | 2013-07-10 | 2013-11-28 | Mitsubishi Electric Corp | Ac-dc conversion device, motor drive device, compressor drive device, air conditioner and heat pump water heater |
| JP2015162910A (en) * | 2014-02-26 | 2015-09-07 | シャープ株式会社 | Ac/dc converter and electric apparatus including the same |
| CN104935160A (en) * | 2015-07-01 | 2015-09-23 | 重庆卓美华视光电有限公司 | Energy-saving control circuit, energy-saving control method and switching power supply |
| CN105024539A (en) * | 2015-06-26 | 2015-11-04 | 广东美的制冷设备有限公司 | Voltage short interruption reply method and device of single-phase AC power supply |
| CN105091252A (en) * | 2015-09-23 | 2015-11-25 | 广东美的制冷设备有限公司 | Control method and system of PFC circuit in air conditioner and air conditioner |
| CN105164920A (en) * | 2013-03-15 | 2015-12-16 | 艾尔弗雷德·E·曼科学研究基金会 | Current sensing multiple output current stimulators with fast turn on time |
| CN105185093A (en) * | 2015-07-29 | 2015-12-23 | 广东欧珀移动通信有限公司 | Remote controller implementation method and device |
| CN106288192A (en) * | 2016-08-17 | 2017-01-04 | 青岛海尔空调器有限总公司 | Air-conditioning pfc circuit control method and air-conditioning |
| CN108768153A (en) * | 2018-05-25 | 2018-11-06 | 青岛海尔空调电子有限公司 | The management method and equipment of number of channels are run in multiphase interleaving PFC circuit |
| CN108809070A (en) * | 2017-04-26 | 2018-11-13 | 立锜科技股份有限公司 | Power supply change-over device, slow start circuit and power supply control chip |
| CN108847181A (en) * | 2018-07-13 | 2018-11-20 | 京东方科技集团股份有限公司 | A kind of grayscale adjusts circuit and display device |
| CN108988853A (en) * | 2018-07-04 | 2018-12-11 | 西安电子科技大学 | Digital auxiliary lock circuit |
| CN109764503A (en) * | 2019-01-15 | 2019-05-17 | 海信（广东）空调有限公司 | Power-supplying circuit and air conditioner outside a kind of air conditioning chamber |
| CN109823574A (en) * | 2019-02-18 | 2019-05-31 | 中国科学院国家空间科学中心 | A kind of spaceborne intermittence service load system |
| WO2019120295A1 (en) * | 2017-12-21 | 2019-06-27 | Bitmain Technologies Inc. | Power supply circuit, series power supply method and computing system thereof |
| CN110442222A (en) * | 2019-07-08 | 2019-11-12 | 新华三技术有限公司成都分公司 | Hard disk electrification control method and device |
| CN111412625A (en) * | 2019-01-07 | 2020-07-14 | 广东美的制冷设备有限公司 | Circuit board and air conditioner |
| CN111486543A (en) * | 2020-04-21 | 2020-08-04 | 海信（山东）空调有限公司 | Air conditioner and control method thereof |
| EP3739274A1 (en) * | 2018-01-11 | 2020-11-18 | Mitsubishi Electric Corporation | Air conditioner |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6661370B2 (en) * | 2015-12-25 | 2020-03-11 | ローム株式会社 | Power factor improvement circuit and its control circuit, electronic device, power adapter |
| JP6299831B1 (en) * | 2016-09-30 | 2018-03-28 | ダイキン工業株式会社 | Active filter device, air conditioning device, and air conditioning system |
| CN109861356B (en) * | 2018-05-09 | 2023-03-24 | 台达电子工业股份有限公司 | Impact current suppression module, vehicle-mounted bidirectional charger and control method |
| US11165334B2 (en) * | 2019-03-19 | 2021-11-02 | Stmicroelectronics International N.V. | Enhancing high-voltage startup voltage rating for PWM controllers with internal high voltage startup circuit |
-
2020
- 2020-12-18 CN CN202011505770.3A patent/CN112648693B/en active Active
Patent Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0627870A2 (en) * | 1993-06-01 | 1994-12-07 | ABBPATENT GmbH | Method for triggering/regulating at least two parallel resonant circuit converters |
| KR20030050930A (en) * | 2001-12-19 | 2003-06-25 | 주식회사 엘지이아이 | A power factor control circuit of air-conditioner |
| CN201903575U (en) * | 2010-12-24 | 2011-07-20 | 海信（山东）空调有限公司 | Direct current detection circuit and inverter air-conditioner applying same |
| CN105164920A (en) * | 2013-03-15 | 2015-12-16 | 艾尔弗雷德·E·曼科学研究基金会 | Current sensing multiple output current stimulators with fast turn on time |
| JP2013240274A (en) * | 2013-07-10 | 2013-11-28 | Mitsubishi Electric Corp | Ac-dc conversion device, motor drive device, compressor drive device, air conditioner and heat pump water heater |
| JP2015162910A (en) * | 2014-02-26 | 2015-09-07 | シャープ株式会社 | Ac/dc converter and electric apparatus including the same |
| CN105024539A (en) * | 2015-06-26 | 2015-11-04 | 广东美的制冷设备有限公司 | Voltage short interruption reply method and device of single-phase AC power supply |
| CN104935160A (en) * | 2015-07-01 | 2015-09-23 | 重庆卓美华视光电有限公司 | Energy-saving control circuit, energy-saving control method and switching power supply |
| CN105185093A (en) * | 2015-07-29 | 2015-12-23 | 广东欧珀移动通信有限公司 | Remote controller implementation method and device |
| CN105091252A (en) * | 2015-09-23 | 2015-11-25 | 广东美的制冷设备有限公司 | Control method and system of PFC circuit in air conditioner and air conditioner |
| CN106288192A (en) * | 2016-08-17 | 2017-01-04 | 青岛海尔空调器有限总公司 | Air-conditioning pfc circuit control method and air-conditioning |
| CN108809070A (en) * | 2017-04-26 | 2018-11-13 | 立锜科技股份有限公司 | Power supply change-over device, slow start circuit and power supply control chip |
| WO2019120295A1 (en) * | 2017-12-21 | 2019-06-27 | Bitmain Technologies Inc. | Power supply circuit, series power supply method and computing system thereof |
| EP3739274A1 (en) * | 2018-01-11 | 2020-11-18 | Mitsubishi Electric Corporation | Air conditioner |
| CN108768153A (en) * | 2018-05-25 | 2018-11-06 | 青岛海尔空调电子有限公司 | The management method and equipment of number of channels are run in multiphase interleaving PFC circuit |
| CN108988853A (en) * | 2018-07-04 | 2018-12-11 | 西安电子科技大学 | Digital auxiliary lock circuit |
| CN108847181A (en) * | 2018-07-13 | 2018-11-20 | 京东方科技集团股份有限公司 | A kind of grayscale adjusts circuit and display device |
| CN111412625A (en) * | 2019-01-07 | 2020-07-14 | 广东美的制冷设备有限公司 | Circuit board and air conditioner |
| CN109764503A (en) * | 2019-01-15 | 2019-05-17 | 海信（广东）空调有限公司 | Power-supplying circuit and air conditioner outside a kind of air conditioning chamber |
| CN109823574A (en) * | 2019-02-18 | 2019-05-31 | 中国科学院国家空间科学中心 | A kind of spaceborne intermittence service load system |
| CN110442222A (en) * | 2019-07-08 | 2019-11-12 | 新华三技术有限公司成都分公司 | Hard disk electrification control method and device |
| CN111486543A (en) * | 2020-04-21 | 2020-08-04 | 海信（山东）空调有限公司 | Air conditioner and control method thereof |
Non-Patent Citations (1)
| Title |
|---|
| The novel realizations of current-mode based accurate active AC-DC converter;Liang Rongxin；Qiu Shuisheng;《Chinese Journal of Scientific Instrument》;第25卷(第3期);346-9 * |
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