CN112310966A - Photovoltaic energy storage air conditioner power supply system and control method thereof - Google Patents
Photovoltaic energy storage air conditioner power supply system and control method thereof Download PDFInfo
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- CN112310966A CN112310966A CN202011104904.0A CN202011104904A CN112310966A CN 112310966 A CN112310966 A CN 112310966A CN 202011104904 A CN202011104904 A CN 202011104904A CN 112310966 A CN112310966 A CN 112310966A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims description 11
- 238000004378 air conditioning Methods 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000009466 transformation Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 210000000352 storage cell Anatomy 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/02—Circuit arrangements for ac mains or ac distribution networks using a single network for simultaneous distribution of power at different frequencies; using a single network for simultaneous distribution of ac power and of dc power
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
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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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
-
- 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
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a photovoltaic energy storage air conditioner power supply system, which comprises: the air conditioner comprises an air conditioner host, an alternating current load and a direct current load, wherein the direct current load is carried on a direct current bus provided by the photovoltaic energy storage system, and the alternating current load is carried on a mains supply grid through an alternating current wire; the inverter power unit is mounted between the direct current bus and the air conditioner host, the converter power unit is mounted between the alternating current wire and the direct current bus, and the control module is used for controlling the working mode of the photovoltaic energy storage air conditioner power supply system according to the state of a mains supply power grid. By adopting the photovoltaic energy storage air conditioner power supply system, the air conditioner can be powered without direct current transformation on the air conditioner.
Description
Technical Field
The invention relates to the field of photovoltaic air conditioners, in particular to a photovoltaic energy storage air conditioner power supply system and a control method.
Background
Photovoltaic air conditioner is from net power supply system mainly solves the electric wire netting and breaks down the back, and air conditioning unit can also normally work, and common air conditioning unit's main power consumption load mainly has: the system comprises a centrifuge main machine, a cooling water pump, a chilled water pump, various electromagnetic valves, fan cooling towers and other loads in an electric room, and also comprises distributed power supply loads such as indoor fans and the like. The power supply interfaces of the whole centrifuge power supply system are various, and the power supply load is dispersed.
The existing non-off-grid power supply scheme is that power is taken from an alternating current side, and once the alternating current side is powered off, each device cannot be guaranteed to work continuously. In the existing optical energy storage off-network power supply scheme, as shown in fig. 1, all loads of a centrifugal unit are subjected to direct-current transformation, and then are connected to a direct-current bus and supplied with power by an optical energy storage direct-current micro-network. However, in some existing air conditioning units, some components cannot be transformed into a direct current load, and only a DC/AC inverter is added to continue to supply power to the load through direct current to alternating current. The main problems of the scheme are that the modification difficulty is high, and the cost is increased after the DC/AC is added.
Disclosure of Invention
The invention aims to solve the technical problems that an air conditioning unit in the prior art is difficult to modify photovoltaic power supply and the cost is increased, and provides a photovoltaic energy storage air conditioning power supply system and a control method thereof.
The embodiment of the invention provides a photovoltaic energy storage air conditioner power supply system which comprises a photovoltaic energy storage system, an inversion power unit, a variable current power unit, a control module and an air conditioner, wherein the air conditioner comprises an air conditioner host, an alternating current load and a direct current load,
the direct-current load is carried on a direct-current bus provided by the photovoltaic energy storage system, and the alternating-current load is carried on a mains supply grid through an alternating-current wire;
the inversion power unit is arranged between the direct current bus and the air conditioner main unit and is used for inverting the direct current into high-voltage alternating current required by the air conditioner main unit;
the variable-current power unit is arranged between the alternating-current wire and the direct-current bus and used for converting alternating current provided by a mains supply power grid into direct current or converting direct current provided by the photovoltaic energy storage system into alternating current;
the control module is used for controlling the working mode of the photovoltaic energy storage air conditioner power supply system according to the state of a mains power grid, and when the mains power grid supplies power normally, the control module controls the photovoltaic energy storage air conditioner power supply system to work in a grid-connected power supply mode; when the mains supply is powered off, the control module controls the photovoltaic energy storage air conditioner power supply system to work in an off-grid power supply mode.
In the embodiment of the invention, in a grid-connected power supply mode, when the electric energy provided by the photovoltaic energy storage system is sufficient, the photovoltaic energy storage system is preferentially adopted to supply power to the air conditioner host and the direct current load, the direct current provided by the photovoltaic energy storage system is inverted into three-phase alternating current by the variable current power unit and is connected to a mains supply power grid, and the alternating current load is supplied with power by the mains supply power grid; when the electric energy provided by the photovoltaic energy storage system is insufficient, the variable current power unit converts alternating current commercial power into direct current to be provided to the direct current bus, so that power is supplied to the air conditioner host and the direct current load, the photovoltaic energy storage system is charged, and the alternating current load is supplied with power by a commercial power grid.
In the embodiment of the invention, in an off-grid power supply mode, the variable current power unit inverts direct current provided by the photovoltaic energy storage system into three-phase alternating current to supply power to the alternating current load, and the photovoltaic energy storage system supplies power to the air conditioner host and the direct current load through a direct current bus.
In the embodiment of the invention, when the mains supply is recovered, the control module controls the variable current power unit to synchronize the phase of the inverted three-phase voltage with the phase of the power grid and then to access the mains supply, and controls the photovoltaic energy storage air conditioner power supply system to work in a grid-connected power supply mode.
In the embodiment of the invention, the photovoltaic energy storage system comprises a photovoltaic assembly and an energy storage battery.
In the embodiment of the invention, the air conditioner host adopts a centrifuge host.
In the embodiment of the invention, the alternating current load comprises a fan, a water pump, a cooling tower and a transformer.
In the embodiment of the invention, the direct current load comprises a direct current cooler and a variable frequency oil pump.
In the embodiment of the invention, the variable current power unit comprises a transformer and a three-phase bridge rectification circuit, wherein three-phase terminals on one side of the transformer are respectively connected with the middle points of three bridge arms of the three-phase bridge rectification circuit.
In an embodiment of the present invention, a control method of the photovoltaic energy storage air conditioner power supply system is further provided, where the control method includes:
controlling the working mode of the photovoltaic energy storage air conditioner power supply system according to the state of a mains supply power grid;
when the commercial power grid normally supplies power, controlling the photovoltaic energy storage air conditioner power supply system to work in a grid-connected power supply mode;
and when the mains supply is powered off, controlling the photovoltaic energy storage air conditioner power supply system to work in an off-grid power supply mode.
Compared with the prior art, in the photovoltaic energy storage air conditioner power supply system and the control method thereof, the working mode of the photovoltaic energy storage air conditioner power supply system is controlled according to the state of a mains power grid, when the mains power grid supplies power normally, the photovoltaic energy storage air conditioner power supply system is controlled to work in a grid-connected power supply mode, the photovoltaic energy storage system is preferentially adopted to supply power for the air conditioner host and the direct current load, the direct current provided by the photovoltaic energy storage system is inverted into three-phase alternating current by the variable current power unit and is connected to the mains power grid, and the alternating current load is supplied with power by the mains power grid; when the mains supply is powered off, the photovoltaic energy storage air conditioner power supply system is controlled to work in an off-grid power supply mode, the direct current provided by the photovoltaic energy storage system is inverted into three-phase alternating current by the variable current power unit to supply power to the alternating current load, the power consumption requirements of an air conditioner host, the alternating current load and the direct current load in various air conditioning units can be met, photovoltaic power supply transformation of the air conditioner unit is not needed, and the cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a photovoltaic energy storage air conditioner power supply system in the prior art.
Fig. 2 is a schematic structural diagram of a photovoltaic energy storage air conditioner power supply system according to an embodiment of the invention.
Fig. 3 is a schematic structural diagram of a variable current power unit according to an embodiment of the present invention.
Fig. 4 is a flowchart of a control method of a photovoltaic energy storage air conditioner power supply system according to an embodiment of the invention.
Fig. 5 is a schematic diagram of synchronizing the off-grid voltage and the grid voltage in an embodiment of the invention.
Detailed Description
As shown in fig. 2, an embodiment of the present invention provides a photovoltaic energy storage air conditioner power supply system, which includes a photovoltaic energy storage system 1, an inverter power unit 2, a converter power unit 3, an air conditioner 4, and a control module (not shown). The photovoltaic energy storage system 1 comprises a photovoltaic module 11 and an energy storage cell 12. The air conditioner 4 includes an air conditioner main unit 41, an ac load 42, and a dc load 43. The air conditioner main unit 41 may adopt a centrifuge main unit; the alternating current load 42 comprises a fan, a water pump, a cooling tower and a transformer; the direct current load comprises a common bus load 43 including a direct current cooler, a variable frequency oil pump and the like.
The dc load 43 is mounted on a dc bus provided by the photovoltaic energy storage system 1. The ac load 44 is mounted on the utility grid via an ac line. The inverter power unit 2 is mounted between the dc bus and the air conditioner main unit 41, and is configured to invert the dc power provided by the dc bus into the high-voltage ac power required by the air conditioner main unit 41. It should be noted that, because the ac power required by the air conditioner main unit 41 is a high-voltage ac power having a voltage higher than the mains voltage, the mains power cannot be directly supplied, and the dc power provided by the dc bus needs to be inverted into a high-voltage ac power by the inverter power unit 2.
The variable-current power unit 3 is mounted between the alternating-current electric wire and the direct-current bus and used for converting alternating current provided by a mains power grid into direct current and providing the direct current to the direct-current bus, or inverting the direct current provided by the photovoltaic energy storage system into alternating current and connecting the alternating current to the mains power grid through the alternating-current electric wire.
As shown in fig. 3, the variable-current power unit 3 includes a transformer and a three-phase bridge rectifier circuit, and three-phase terminals on one side of the transformer are respectively connected to midpoints of three bridge arms of the three-phase bridge rectifier circuit. The variable-current power unit 3 can work in a rectification mode or an inversion mode under the control of the control module.
And the control module is used for controlling the working mode of the photovoltaic energy storage air conditioner power supply system according to the state of the commercial power grid.
As shown in fig. 4, when the utility grid supplies power normally, the control module controls the photovoltaic energy storage air conditioner power supply system to work in the grid-connected power supply mode. In a grid-connected power supply mode, when the electric energy provided by the photovoltaic energy storage system 1 is sufficient, the photovoltaic energy storage system 1 is preferentially adopted to supply power to the air conditioner host 41 and the direct-current load 43, the direct current provided by the photovoltaic energy storage system 1 is inverted into three-phase alternating current by the variable current power unit 3 and is connected to a mains supply power grid, and the alternating-current load 42 is supplied with power by the mains supply power grid; when the electric energy provided by the photovoltaic energy storage system 1 is insufficient, the variable current power unit 3 converts alternating current commercial power into direct current to be provided to the direct current bus, so as to supply power to the air conditioner host 41 and the direct current load 43 and charge the photovoltaic energy storage system 1, and the alternating current load 43 is supplied with power by a commercial power grid.
When the mains supply is powered off, the control module controls the photovoltaic energy storage air conditioner power supply system to work in an off-grid power supply mode. In the off-grid power supply mode, the variable current power unit 3 inverts the direct current provided by the photovoltaic energy storage system 1 into three-phase alternating current to supply power to the alternating current load 43, and the photovoltaic energy storage system 1 supplies power to the air conditioner main unit 41 and the direct current load 43 through the direct current bus.
When the mains supply is recovered, the control module controls the variable current power unit 3 to synchronize the phase of the inverted three-phase voltage with the phase of the power grid, then the mains supply is connected, and the photovoltaic energy storage air conditioner power supply system is controlled to work in a grid-connected power supply mode. Synchronizing the inverted three-phase voltage phase with the power grid phase mainly involves angle switching and switching of an outer ring voltage command, and the specific process is shown in fig. 5.
In summary, in the photovoltaic energy storage air conditioner power supply system and the control method thereof of the present invention, the operating mode of the photovoltaic energy storage air conditioner power supply system is controlled according to the state of the utility power grid, when the utility power grid is normally powered, the photovoltaic energy storage air conditioner power supply system is controlled to operate in the grid-connected power supply mode, the photovoltaic energy storage system is preferentially adopted to supply power to the air conditioner host and the direct current load, the variable current power unit inverts the direct current provided by the photovoltaic energy storage system into a three-phase alternating current, and the three-phase alternating current is connected to the utility power grid, and the alternating current load is powered by the utility power; when the mains supply is powered off, the photovoltaic energy storage air conditioner power supply system is controlled to work in an off-grid power supply mode, the direct current provided by the photovoltaic energy storage system is inverted into three-phase alternating current by the variable current power unit to supply power to the alternating current load, the power consumption requirements of an air conditioner host, the alternating current load and the direct current load in various air conditioning units can be met, photovoltaic power supply transformation of the air conditioner unit is not needed, and the cost is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A photovoltaic energy storage air conditioner power supply system is characterized by comprising a photovoltaic energy storage system, an inversion power unit, a variable power unit, a control module and an air conditioner, wherein the air conditioner comprises an air conditioner host, an alternating current load and a direct current load,
the direct-current load is carried on a direct-current bus provided by the photovoltaic energy storage system, and the alternating-current load is carried on a mains supply grid through an alternating-current wire;
the inversion power unit is arranged between the direct current bus and the air conditioner main unit and is used for inverting the direct current into high-voltage alternating current required by the air conditioner main unit;
the variable-current power unit is arranged between the alternating-current wire and the direct-current bus and used for converting alternating current provided by a mains supply power grid into direct current or converting direct current provided by the photovoltaic energy storage system into alternating current;
the control module is used for controlling the working mode of the photovoltaic energy storage air conditioner power supply system according to the state of a mains power grid, and when the mains power grid supplies power normally, the control module controls the photovoltaic energy storage air conditioner power supply system to work in a grid-connected power supply mode; when the mains supply is powered off, the control module controls the photovoltaic energy storage air conditioner power supply system to work in an off-grid power supply mode.
2. The system according to claim 1, wherein in the grid-connected power supply mode, when the photovoltaic energy storage system can provide sufficient electric energy, the photovoltaic energy storage system is preferentially adopted to supply power to the air conditioner host and the dc load, the variable current power unit inverts the dc power provided by the photovoltaic energy storage system into three-phase ac power to be connected to the utility grid, and the ac load is supplied with power by the utility grid; when the electric energy provided by the photovoltaic energy storage system is insufficient, the variable current power unit converts alternating current commercial power into direct current to be provided to the direct current bus, so that power is supplied to the air conditioner host and the direct current load, the photovoltaic energy storage system is charged, and the alternating current load is supplied with power by a commercial power grid.
3. The photovoltaic energy-storage air-conditioning power supply system according to claim 2, wherein in the off-grid power supply mode, the variable-current power unit inverts direct current provided by the photovoltaic energy-storage system into three-phase alternating current to supply power to the alternating-current load, and the photovoltaic energy-storage system supplies power to the air-conditioning main unit and the direct-current load through a direct-current bus.
4. The photovoltaic energy storage air-conditioning power supply system according to claim 3, wherein when the commercial power is restored, the control module controls the variable current power unit to synchronize the phase of the inverted three-phase voltage with the phase of the power grid and then to connect the commercial power, and controls the photovoltaic energy storage air-conditioning power supply system to operate in a grid-connected power supply mode.
5. The photovoltaic energy storage air conditioning power supply system according to claim 1, wherein the photovoltaic energy storage system comprises a photovoltaic module and an energy storage battery.
6. The photovoltaic energy storage air conditioner power supply system of claim 1, wherein the air conditioner host machine is a centrifuge host machine.
7. The photovoltaic energy storage air conditioning power supply system according to claim 1, wherein the ac loads include fans, water pumps, cooling towers, and transformers.
8. The photovoltaic energy storage air conditioning power supply system according to claim 1, wherein the dc load comprises a dc cooler and a variable frequency oil pump.
9. The photovoltaic energy storage air conditioner power supply system as claimed in claim 1, wherein the variable current power unit comprises a transformer and a three-phase bridge rectification circuit, and three-phase terminals on one side of the transformer are respectively connected with middle points of three bridge arms of the three-phase bridge rectification circuit.
10. The control method of the photovoltaic energy storage air conditioner power supply system according to claim 1, characterized by comprising the following steps:
controlling the working mode of the photovoltaic energy storage air conditioner power supply system according to the state of a mains supply power grid;
when the commercial power grid normally supplies power, controlling the photovoltaic energy storage air conditioner power supply system to work in a grid-connected power supply mode;
and when the mains supply is powered off, controlling the photovoltaic energy storage air conditioner power supply system to work in an off-grid power supply mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011104904.0A CN112310966A (en) | 2020-10-15 | 2020-10-15 | Photovoltaic energy storage air conditioner power supply system and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011104904.0A CN112310966A (en) | 2020-10-15 | 2020-10-15 | Photovoltaic energy storage air conditioner power supply system and control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023280108A1 (en) * | 2021-07-08 | 2023-01-12 | 合肥华凌股份有限公司 | Voltage control circuit applicable to frequency inversion device, and frequency inversion device |
| WO2024164551A1 (en) * | 2023-02-10 | 2024-08-15 | 青岛海信日立空调系统有限公司 | Photovoltaic air conditioner and control method therefor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362612A (en) * | 2014-10-21 | 2015-02-18 | 广东美的制冷设备有限公司 | Power supply system of air conditioner and family micro grid system based on photovoltaic power supply |
| CN105305494A (en) * | 2015-11-12 | 2016-02-03 | 南车株洲电力机车研究所有限公司 | Intelligent power supply system for photovoltaic air conditioner and power supply method |
-
2020
- 2020-10-15 CN CN202011104904.0A patent/CN112310966A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362612A (en) * | 2014-10-21 | 2015-02-18 | 广东美的制冷设备有限公司 | Power supply system of air conditioner and family micro grid system based on photovoltaic power supply |
| CN105305494A (en) * | 2015-11-12 | 2016-02-03 | 南车株洲电力机车研究所有限公司 | Intelligent power supply system for photovoltaic air conditioner and power supply method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023280108A1 (en) * | 2021-07-08 | 2023-01-12 | 合肥华凌股份有限公司 | Voltage control circuit applicable to frequency inversion device, and frequency inversion device |
| WO2024164551A1 (en) * | 2023-02-10 | 2024-08-15 | 青岛海信日立空调系统有限公司 | Photovoltaic air conditioner and control method therefor |
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