CN203744433U - Photovoltaic air conditioning system - Google Patents
Photovoltaic air conditioning system Download PDFInfo
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- CN203744433U CN203744433U CN201320594914.6U CN201320594914U CN203744433U CN 203744433 U CN203744433 U CN 203744433U CN 201320594914 U CN201320594914 U CN 201320594914U CN 203744433 U CN203744433 U CN 203744433U
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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
- 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
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Abstract
The utility model discloses a photovoltaic air conditioning system, this photovoltaic air conditioning system includes the photovoltaic cell array, the air conditioning unit, the unit that becomes current, and direct current generating line, be equipped with the unit that becomes current between public electric wire netting and contravariant module, the capacity of this unit that becomes current is according to the demand configuration of photovoltaic cell array or public electric wire netting, the last contravariant module that is as unit mark accessory that is provided with of air conditioning unit, the direct current that the photovoltaic cell array sent and send the direct current after the unit rectification of becoming current and supply with contravariant module, in order to supply power for the unit. According to the utility model provides a technical scheme can solve the poor problem of the suitability of photovoltaic air conditioning system among the prior art, the utility model provides a photovoltaic air conditioning system can adapt to the photovoltaic power plant of various different capacities, enables photovoltaic power plant and the seamless high-efficient combination of warm logical air conditioner.
Description
Technical field
The utility model relates to power electronics and air conditioner refrigerating technical field, particularly a kind of photovoltaic air-conditioning system.
Background technology
Day by day receive people's concern as the solar energy of clean energy resource, along with the development of electrical technology and air-conditioning technical, the technology using photovoltaic as the air-conditioner energy also occurs thereupon, the open correlation technique of existing many patents and paper.As Chinese utility model patent application CN102705944A discloses a kind of solar energy frequency-conversion air-conditioning system, it has the air conditioning frequency converter that comprises inversion module and the grid-connected module of commutation inversion, realize by photovoltaic cell and having powered to air-conditioner, and can generate electricity by way of merging two or more grid systems.
But there is problem poor for applicability in photovoltaic air-conditioning system of the prior art, more to the restriction of auxiliary facility.This is due to the part that in prior art, grid-connected required Inverter Unit is air-conditioning unit frequency converter, so in the time generating electricity by way of merging two or more grid systems, air-conditioning unit also must power on, and causes energy waste, also affects the life-span of air-conditioning unit.And owing to being subject to air conditioning frequency converter to hold quantitative limitation, can only configure the photovoltaic cell component suitable with air-conditioning power, so can only coordinate air-conditioning unit by newly-built photovoltaic generating system, and air-conditioning system can not be accessed to existing photovoltaic plant, otherwise be subject to air conditioning frequency converter to hold quantitative limitation, whole electric energy that photovoltaic plant cannot be sent are grid-connected, will cause the significant wastage of electric energy.
In prior art, while also there is air-conditioning compressor emergency shutdown, the electronic power components such as inverter, current transformer in photovoltaic generating system can not get cooling problem in addition.
Utility model content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of photovoltaic air-conditioning system, to solve the problem poor for applicability of photovoltaic air-conditioning system in prior art.
In order to achieve the above object, the utility model provides following technical scheme:
A kind of photovoltaic air-conditioning system, comprises photovoltaic battery array, air-conditioning unit, current transforming unit, the first dc bus, the second dc bus.Air-conditioning unit also comprises and is used to the power supply of described air-conditioning unit the first inversion module as described air-conditioning unit standard configuration part, and the capacity of the first inversion module is according to the power configuration of described air-conditioning unit; Current transforming unit is absolute construction, its first end is connected with public electric wire net, the second end is electrically connected with the first inversion module by the first dc bus, the capacity of current transforming unit is according to the demand configuration of photovoltaic battery array and/or public electric wire net 60, and photovoltaic battery array the second dc bus is electrically connected with the first dc bus.
Further, also comprise the controller for controlling energy flow direction.
Further, in the time that described photovoltaic battery array power output is more than or equal to the required input power of described air-conditioning unit operation, described air-conditioning unit only relies on photovoltaic battery array power supply;
In the time that described photovoltaic battery array power output is less than the required input power of air-conditioning unit operation, combine for the power supply of air-conditioning unit by utility grid and photovoltaic battery array.
Further, in the time that described photovoltaic battery array power output is greater than the required input power of air-conditioning unit operation, or in the time that described air-conditioning unit is not worked, the direct current of photovoltaic battery array output is converted into alternating current by current transforming unit, is delivered to public electric wire net.
Further, current transforming unit comprises rectification module and the second inversion module.
Further, described current transforming unit is four quadrant convertor.
Further, photovoltaic air-conditioning system also comprises the photovoltaic conflux unit and the power supply unit that are arranged between photovoltaic battery array and the second dc bus, and described photovoltaic battery array, photovoltaic conflux unit, power supply unit are connected in turn with the second dc bus.
Further, air-conditioning unit is centrifugal cooling water air conditioner unit or screw cooling water air conditioner unit.
Further, photovoltaic air-conditioning system also comprises current transforming unit cooling device.
Further, air-conditioning unit also comprises evaporimeter and the first condenser, current transforming unit cooling device comprises refrigerant pump, restricting element and the heat exchanger of series connection successively, the first end of refrigerant pump is communicated with described the first condenser, the second end is communicated with restricting element, and the first end of described heat exchanger is communicated with restricting element, and the second end is communicated with described evaporimeter, by described heat exchanger and described current transforming unit heat exchange, make described current transforming unit cooling.
Further, current transforming unit cooling device also comprises check valve, and check valve is in parallel with described refrigerant pump, and the entrance of check valve is communicated with described the first condenser, and outlet is communicated with described restricting element.
Further, air-conditioning system also comprises the second condenser, and the second condenser is connected between heat exchanger and evaporimeter.
The beneficial effects of the utility model are: the photovoltaic air-conditioning system that the utility model provides, can adapt to the photovoltaic plant of various different capabilities, and can make photovoltaic plant be combined with HVAC seamless and efficient.
Further, also realize in the situation that air-conditioning unit is not started shooting the cooling of electronic power components in realizing photovoltaic generating system, when improving photovoltaic system reliability, extended the life-span of air-conditioning unit.
Brief description of the drawings
Fig. 1 is the photovoltaic air-conditioning system structural framing schematic diagram of the utility model embodiment mono-;
Fig. 2 is the photovoltaic air-conditioning system frequency conversion unit cooling structure schematic diagram of the utility model embodiment bis-.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Embodiment 1
With reference to Fig. 1, be the photovoltaic air-conditioning system structural framing schematic diagram in the utility model embodiment 1, this photovoltaic air-conditioning system comprises photovoltaic battery array 10, current transforming unit 20, air-conditioning unit 30, the first dc bus 40 and the second dc bus 50.Air-conditioning unit 30 also comprises the first inversion module 31, the first inversion module 31 belongs to the standard configuration part of air-conditioning unit 30 as a part for air conditioning frequency converter, the first inversion module 31 is that load 32 is powered for direct current being converted into alternating current, load 32 at least comprises the frequency-changeable compressor of air-conditioning unit, and the capacity of the first inversion module 31 is configured according to the power demand of air-conditioning unit 30.Preferably, the first inversion module 31 is airborne setting, is arranged on air-conditioning unit 30.
Photovoltaic battery array 10 is connected with the first dc bus 40 by the second dc bus 50, and the direct current that photovoltaic battery array 10 produces is directly powered for air-conditioning unit 30 through the second dc bus 50 and the first dc bus 40.
Current transforming unit 20 is absolute construction, and its one end is connected with public electric wire net 60, and the other end is connected with the first inversion module 30 by the first dc bus 40.Current transforming unit 20 comprises rectification module 21 and the second inversion module 22, rectification module 21 is that air-conditioning unit 30 is powered for the alternating current of public electric wire net 60 being converted into direct current, the second inversion module 22 is for parallel network power generation, and the direct current that photovoltaic battery array 10 is produced is converted into alternating current and is incorporated to public electric wire net 60.The capacity of current transforming unit 20 is according to the demand configuration of photovoltaic battery array 10 and/or public electric wire net 60.Current transforming unit 20 can not be subject to the limitation of air-conditioning unit itself as absolute construction, be also convenient to connect up and install by the requirement of photovoltaic plant construction.The Main Function one of current transforming unit 20 is maximum power point trackings (MPPT) of realizing photovoltaic battery array 10; The 2nd, realize distributing rationally of energy, preferentially use photovoltaic generation, the power that guarantee photovoltaic battery array 10 is exported is preferentially for air-conditioning unit 30, and energy shortage is supplied by public electric wire net 60 again.Preferably, current transforming unit 20 is four quadrant convertor.
Photovoltaic air-conditioning system also comprises controller, and this controller is for controlling the flow direction of energy.
In the time that the power output of photovoltaic battery array 10 is more than or equal to air-conditioning unit 30 and moves required input power, the direct current that photovoltaic battery array 10 produces is the power supply of air-conditioning unit after the first inversion module 31 inversions are alternating current, now described air-conditioning unit 30 only relies on photovoltaic battery array 10 to power, without powering by public electric wire net 60, now current transforming unit 20 is not worked.
In the time that the power output of photovoltaic battery array 10 is less than air-conditioning unit 30 and moves required input power, it is in air-conditioning unit 30 is powered that the direct current producing at photovoltaic battery array 10 flows to the first inversion module 31, be also that direct current flows to the first inversion module 31 by civil power through current transforming unit 20 rectifications, combine for the power supply of air-conditioning unit, to make up the deficiency of photovoltaic generation by public electric wire net 60 and photovoltaic battery array 10.
In the time that the power output of photovoltaic battery array 10 is greater than air-conditioning unit 30 and moves required input power, or in the time that air-conditioning unit 30 is not worked, the part or all of direct current of photovoltaic battery array output is converted into alternating current by current transforming unit 20, is delivered to public electric wire net 60, and realization is generated electricity by way of merging two or more grid systems.Because current transforming unit 20 does not depend on the controller of air conditioner group 30, to realize in the situation that air-conditioning unit 30 does not start, photovoltaic battery array 10 just can generate electricity by way of merging two or more grid systems.
Preferably, the photovoltaic air-conditioning system of the present embodiment also comprises photovoltaic conflux unit and power supply unit, and photovoltaic battery array 10, photovoltaic conflux unit, power supply unit and the second dc bus 50 are connected in turn.
Preferably, the photovoltaic air-conditioning system of the present embodiment also comprises DC boosting module, and DC boosting module is arranged between power supply unit and the second dc bus 50.
In the present embodiment, air-conditioning unit 30 is central air-conditioning unit, preferably centrifugal refrigerating machines, screw-type water chiller or VRF Air Conditioning System.
The photovoltaic air-conditioning system that the present embodiment provides, in ensureing that air-conditioning unit can obtain normal power supply, the type selecting that has realized current transforming unit 20 can arrange arbitrarily according to the actual requirements, the restriction of device parameter can not be subject to air-conditioning unit and dispatch from the factory time, improve the applicability of air-conditioning unit, air-conditioning unit can be mated with any photovoltaic plant, and can not cause the waste of energy of photovoltaic plant.
Embodiment 2
The photovoltaic air-conditioning system that the utility model embodiment 2 provides also comprises current transforming unit 20 cooling devices, by the type of cooling such as air-cooled, water-cooled, refrigerant be cold.By radiator and radiator fan are set, current transforming unit 20 is lowered the temperature by air-cooled mode.By water pump and water circulation pipe are set, current transforming unit 20 is lowered the temperature by the mode of water-cooled.
Preferably, adopt the cooling mode of refrigerant to carry out cooling to current transforming unit.As shown in Figure 2, air-conditioning unit 30 comprises the evaporimeter 33, the first condenser 34, compressor 35 and the first throttle element 36 that connect into cooling cycle system.
Current transforming unit cooling device comprises refrigerant pump 61, second section fluid element 63 and the heat exchanger (not shown) that series connection arranges successively.The first end of refrigerant pump 61 is communicated with the first condenser 34, the second end is communicated with second section fluid element 63, the first end of heat exchanger is communicated with second section fluid element 63, the second end is communicated with evaporimeter 33, heat exchanger contacts with current transforming unit 20, by described heat exchanger and current transforming unit 20 heat exchange, current transforming unit 20 is lowered the temperature, described heat exchanger plays cooler.Restricting element 63 can be one or more the combination in capillary, heating power expansion valve, electric expansion valve or restricting orifice.
Wherein, heat exchanger is the metallic cold plate that inside is embedded with refrigerant flow path, metallic cold plate contacts with current transforming unit, also can be according to the factor such as shape, cooling requirement of site environment situation, current transforming unit, select suitable cooler type, for example, for can not contact heat-exchanging or to cooling less demanding device, can select fin-tube heat exchanger, plate-fin heat exchanger etc. as cooler.
Current transforming unit cooling device also comprises check valve 62, and check valve 62 is arranged in parallel with refrigerant pump 61, and the entrance of check valve 62 is communicated with the first condenser 34, and outlet is communicated with restricting element 63.By check valve 62 is set, can prevent coolant backflow and the short circuit of refrigerant bypass, ensure the cooling frequency converter of enough refrigerants.The cooling-down effect of the cooling type of cooling of refrigerant is remarkable, and components selection requires also can suitably reduce.
Refrigerant is flowed through after current transforming unit, can absorb a large amount of heat energy, if do not discharge, finally all can be accumulated in the refrigerant of air-conditioning unit, causes system temperature and the system pressure of the air-conditioning unit under stopped status constantly to rise.If cooling system long-term work under air-conditioning unit stopped status, system temperature continues to rise, and can affect the cooling effect to current transforming unit, and system pressure constantly raises, and can affect the security of whole cooling cycle system.Preferably, between heat exchanger and evaporimeter 33, be provided with the second condenser 64, the low temperature refrigerant flowing out from second section fluid element 63 absorbs the heat that distributes of current transforming unit and evaporates at cooler, becomes the refrigerant steam that temperature is higher, when refrigerant vapor stream to the second condenser 64, with air or water heat exchange, heat release condensation, becomes liquid refrigerants again, enters evaporimeter 33, get back in air-conditioning unit, complete a cool cycles.
The effect of the second condenser 64 is exactly the reliability that improves system, and cooling system can be run well for a long time under air-conditioning unit stopped status.When this external air conditioner group start work, the second condenser 64 can also prevent that a large amount of heat energy from entering in evaporimeter 33 and causing air-conditioning efficiency to decline.The second condenser 64 is generally selected fin-tube heat exchanger or plate type heat exchanger.
When current transforming unit 20 is while being made up of multiple discrete modules, can be corresponding multiple heat exchange branch roads in parallel are set between refrigerant pump 61 and evaporimeter 33, on every branch road, be provided with restricting element and one or more heat exchanger, be that modules dispels the heat.
The photovoltaic air-conditioning system with current transforming unit cooling device providing according to the utility model, can realize and can carry out electronic power components coolingly at air-conditioning unit in start and the situation of not starting shooting, solve air-conditioning unit in prior art and do not started shooting and cannot carry out cooling problem to electronic power components.
In sum, the utility model has the advantages that: can adapt to the photovoltaic plant of various different capabilities, can make photovoltaic plant be combined with HVAC seamless and efficient.Also realize in the situation that air-conditioning unit is not started shooting the cooling of electronic power components in realizing photovoltaic generating system simultaneously, when improving photovoltaic system reliability, extended the life-span of air-conditioning unit.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (10)
1. a photovoltaic air-conditioning system, comprises photovoltaic battery array, air-conditioning unit, current transforming unit, the first dc bus, the second dc bus, it is characterized in that:
Described air-conditioning unit, comprises and is used to the power supply of described air-conditioning unit the first inversion module as described air-conditioning unit standard configuration part, and the capacity of described the first inversion module is according to the power configuration of described air-conditioning unit,
Described current transforming unit is absolute construction, and its first end is connected with public electric wire net, and the second end is electrically connected with described the first inversion module by the first dc bus, and the capacity of described current transforming unit configures according to the demand of described photovoltaic battery array and/or described public electric wire net,
Described photovoltaic battery array, is electrically connected with the first dc bus by the second dc bus.
2. photovoltaic air-conditioning system according to claim 1, is characterized in that,
Also comprise the controller of controlling energy flow direction.
3. photovoltaic air-conditioning system according to claim 1, is characterized in that,
Described current transforming unit comprises rectification module and the second inversion module.
4. photovoltaic air-conditioning system according to claim 1, is characterized in that,
Described current transforming unit is four quadrant convertor.
5. photovoltaic air-conditioning system according to claim 1, is characterized in that,
Described photovoltaic air-conditioning system also comprises the photovoltaic conflux unit and the power supply unit that are arranged between photovoltaic battery array and the second dc bus, and described photovoltaic battery array, photovoltaic conflux unit, power supply unit are connected in turn with the second dc bus.
6. photovoltaic air-conditioning system according to claim 1, is characterized in that,
Described air-conditioning unit is centrifugal cooling water air conditioner unit, screw cooling water air conditioner unit or VRF Air Conditioning System.
7. according to the photovoltaic air-conditioning system described in claim 1 to 6 any one, it is characterized in that,
Also comprise current transforming unit cooling device.
8. photovoltaic air-conditioning system according to claim 7, is characterized in that,
Described air-conditioning unit also comprises evaporimeter and the first condenser,
Described current transforming unit cooling device comprises refrigerant pump, restricting element and the heat exchanger of series connection successively,
The first end of described refrigerant pump is communicated with described the first condenser, the second end is communicated with restricting element, and the first end of described heat exchanger is communicated with restricting element, and the second end is communicated with described evaporimeter, by described heat exchanger and described current transforming unit heat exchange, make described current transforming unit cooling.
9. photovoltaic air-conditioning system as claimed in claim 8, is characterized in that,
Described current transforming unit cooling device also comprises check valve, and described check valve is in parallel with described refrigerant pump, and the entrance of described check valve is communicated with described the first condenser, and outlet is communicated with described restricting element.
10. photovoltaic air-conditioning system as claimed in claim 9, is characterized in that,
Described air-conditioning system also comprises the second condenser, and described the second condenser is connected between described heat exchanger and described evaporimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320594914.6U CN203744433U (en) | 2013-09-25 | 2013-09-25 | Photovoltaic air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320594914.6U CN203744433U (en) | 2013-09-25 | 2013-09-25 | Photovoltaic air conditioning system |
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| CN203744433U true CN203744433U (en) | 2014-07-30 |
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| CN201320594914.6U Expired - Lifetime CN203744433U (en) | 2013-09-25 | 2013-09-25 | Photovoltaic air conditioning system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486682A (en) * | 2013-09-25 | 2014-01-01 | 珠海格力电器股份有限公司 | Photovoltaic air conditioning system |
| CN110138231A (en) * | 2019-05-10 | 2019-08-16 | 珠海格力电器股份有限公司 | Drive control circuit, control method thereof, drive control system and air conditioner |
| CN111174369A (en) * | 2019-12-30 | 2020-05-19 | 珠海格力电器股份有限公司 | Control method of photovoltaic direct-drive variable frequency air conditioner, computer readable storage medium and air conditioner |
-
2013
- 2013-09-25 CN CN201320594914.6U patent/CN203744433U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486682A (en) * | 2013-09-25 | 2014-01-01 | 珠海格力电器股份有限公司 | Photovoltaic air conditioning system |
| CN103486682B (en) * | 2013-09-25 | 2021-09-28 | 珠海格力电器股份有限公司 | Photovoltaic air conditioning system |
| CN110138231A (en) * | 2019-05-10 | 2019-08-16 | 珠海格力电器股份有限公司 | Drive control circuit, control method thereof, drive control system and air conditioner |
| CN111174369A (en) * | 2019-12-30 | 2020-05-19 | 珠海格力电器股份有限公司 | Control method of photovoltaic direct-drive variable frequency air conditioner, computer readable storage medium and air conditioner |
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Granted publication date: 20140730 |