CN206575378U - A kind of PV air-conditioner power control and PV air-conditioner system - Google Patents
A kind of PV air-conditioner power control and PV air-conditioner system Download PDFInfo
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- CN206575378U CN206575378U CN201720303796.7U CN201720303796U CN206575378U CN 206575378 U CN206575378 U CN 206575378U CN 201720303796 U CN201720303796 U CN 201720303796U CN 206575378 U CN206575378 U CN 206575378U
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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
Abstract
The utility model discloses a kind of PV air-conditioner power control and PV air-conditioner system, the PV air-conditioner power control includes multiple DC converting units, joining unit and converter unit, each DC converting unit is connected by joining unit with converter unit, each DC converting unit correspondence connects a photovoltaic module to control electric energy to export, the direct current of each DC converting module output is after joining unit confluxes, and by converter unit inversion, the alternating current for needed for is supplied to air-conditioning；The PV air-conditioner system includes photovoltaic module, above-mentioned PV air-conditioner power control and air-conditioning device.The utility model has the advantages that simple in construction, required cost is low, generating efficiency is high and energy-conserving and environment-protective.
Description
Technical field
The utility model is related to PV air-conditioner technical field, more particularly to a kind of PV air-conditioner power control.
Background technology
The need for traditional fossil energy can not meet industrial development and resident living, and solar energy is a kind of reserves
The green energy resource of unlimited and cleanliness without any pollution, photovoltaic power generation technology has been widely used in each field at present.In convertible frequency air-conditioner
Photovoltaic generating system is introduced in electric power system, the pressure of power system can be mitigated, while when occurring the situations such as limitation electricity consumption
So that remain able to normally use air-conditioning, not only environmental protection, and it is energy-efficient.
Photovoltaic group string or photovoltaic array are formed after multiple photovoltaic module connection in series-parallel connections, the inherent characteristic of each photovoltaic module can
Can and differ, in normal operating conditions, photovoltaic cell U-I and P-I characteristic curves are with irradiation level and temperature change and are in
Reveal typical nonlinear characteristic.In order that photovoltaic power generation quantity is maximized, at present typically by one in PV air-conditioner system
Individual converter unit realizes the maximal power tracing of a photovoltaic group string or photovoltaic array, i.e., same by a DC/DC converter unit
When one photovoltaic group string of tracking in multiple photovoltaic modulies peak power, but not only inherent characteristic may not for each photovoltaic module
Together, and shadow occlusion, angle of inclination or intensity of illumination etc. may be different during actual use, to whole photovoltaic group string or photovoltaic battle array
Row tracking peak power can not actually cause each piece of photovoltaic module Maximum Power Output, thus photovoltaic group string or photovoltaic battle array
There are photovoltaic module power mismatch problems in row.The live load of air conditioner is larger, and the limited power density of photovoltaic module, above-mentioned
The performance of each photovoltaic module can not be given full play to by the method that power tracking is carried out to whole photovoltaic group string or photovoltaic array, it is real
The generating efficiency of border PV air-conditioner is not high.
Utility model content
The technical problems to be solved in the utility model is that：The technical problem existed for prior art, this practicality is new
A kind of simple in construction, required cost of type offer is low, generating efficiency is high and energy-conserving and environment-protective PV air-conditioner power controls and light
Lie prostrate air-conditioning system.
In order to solve the above technical problems, the utility model proposes technical scheme be：
A kind of PV air-conditioner power control, it is characterised in that including multiple DC converting units, joining unit and
Converter unit, each described DC converting unit is connected by the joining unit with the converter unit, each direct current
Converter unit correspondence one photovoltaic module of connection is to control electric energy to export, the direct current warp of each DC converting module output
Cross after the joining unit confluxes, air-conditioning is supplied to by converter unit inversion alternating current for needed for.
It is used as the further improvement of the utility model device：The DC converting unit includes MPPT control modules and straight
Conversion module is flowed, the MPPT control modules receive control instruction, control the DC converting module to enter line translation to track pair
The peak power output for the photovoltaic module answered.
It is used as the further improvement of the utility model device：The DC converting module includes drive circuit and connected successively
Input fuse, input switch, boost chopper, the output switch connect, by the boost chopper by the electricity of access
Press and exported after boosting inverter voltage of size for needed for.
It is used as the further improvement of the utility model device：The MPPT control modules access the converter unit output
Air-conditioning frequency conversion state, output control is instructed to the boost chopper.
It is used as the further improvement of the utility model device：The input and/or output end of the DC converting module are also
It is provided with lightning protection device.
It is used as the further improvement of the utility model device：The converter unit includes the first inversion module, described first
The AC of inversion module is connected to compressor of air conditioner.
It is used as the further improvement of the utility model device：The converter unit also includes the second inversion module, described the
Two inversion module incoming transport power supplys enter line translation to supplement not enough power needed for air-conditioning.
It is used as the further improvement of the utility model device：Second inversion module is specially Bidirectional variable-flow module, institute
Bidirectional variable-flow module is stated when photovoltaic generation power is less than power needed for air-conditioning, incoming transport power supply enters line translation to supplement air-conditioning
Required not enough power, and when photovoltaic generation power is more than power needed for air-conditioning, unnecessary energy conversion is fed back into electricity
Net or load.
It is used as the further improvement of the utility model device：The joining unit is the junction station with lightning protection function.
The utility model further discloses a kind of PV air-conditioner system, including photovoltaic module, the above-mentioned photovoltaic being sequentially connected
Each DC converting unit pair in air conditioner power source control device and air-conditioning device, the PV air-conditioner power control
A photovoltaic module should be connected to control electric energy to export, alternating current needed for the PV air-conditioner power control output is supplied to
The compressor of air conditioner of the air-conditioning device is powered.
Compared with prior art, the utility model has the advantage of：The utility model PV air-conditioner power control, leads to
Cross by the output of DC converting unit correspondence one photovoltaic module of control, the direct current warp of each DC converting unit output
Cross after joining unit confluxes, by converter unit inversion, the alternating current for needed for is supplied to air-conditioning, can give full play to each photovoltaic group
The performance of part, realizes the power match between each photovoltaic module, is photovoltaic so as to improve photovoltaic efficiency to greatest extent
Air-conditioning provides efficient photovoltaic electric energy.
Compared with prior art, the utility model has the advantage of：Originally it is utility model PV air-conditioner system, including photovoltaic
Each DC converting unit in component, PV air-conditioner power control and air-conditioning device, PV air-conditioner power control
Correspondence one photovoltaic module of connection can utilize the photovoltaic generation of each piece of photovoltaic module to greatest extent to control electric energy to export
Amount, it is not only environmentally friendly, and save, efficiently.
Brief description of the drawings
Fig. 1 is the structural representation of the present embodiment PV air-conditioner power control.
Fig. 2 is the concrete structure schematic diagram of the present embodiment DC converting unit.
Marginal data：1st, DC converting unit；11st, MPPT control modules；12nd, DC converting module；121st, drive circuit；
122nd, fuse is inputted；123rd, input switch；124th, boost chopper；125th, output switch；2nd, joining unit；3rd, frequency conversion list
Member；31st, the first inversion module；32nd, the second inversion module；4th, photovoltaic module；5th, compressor of air conditioner.
Embodiment
The utility model is further described below in conjunction with Figure of description and specific preferred embodiment, but not because
This and limit protection domain of the present utility model.
Embodiment 1：
As shown in figure 1, the present embodiment PV air-conditioner power control, including multiple DC converting units 1, joining unit
2 and converter unit 3, each DC converting unit 1 is connected by joining unit 2 with converter unit 3, each DC converting unit
1 correspondence one photovoltaic module 4 of connection is to control electric energy to export, i.e., each piece photovoltaic module 4 is corresponded with DC converting unit 1
Connection, the direct current of each DC converting unit 1 output is handed over after joining unit 2 confluxes by the inversion of converter unit 3 for needed for
Stream electricity is supplied to air-conditioning.
The present embodiment is become by the output by correspondence one photovoltaic module 4 of control of DC converting unit 1, each direct current
The direct current of the output of unit 1 is changed after joining unit 2 confluxes, air-conditioning is supplied to by the inversion of converter unit 3 alternating current for needed for,
The performance of each photovoltaic module 4 can be given full play to, the power match between each photovoltaic module 4 is realized, so as to greatest extent
Raising photovoltaic efficiency, provide efficient photovoltaic electric energy for PV air-conditioner.
Each DC converting unit 1 is connected directly to the DC link of converter unit 3 by the present embodiment by joining unit 2,
Compared with traditional air-conditioning electric power system needs to provide to compressor of air conditioner again by electrical grid transmission to rectifier, inverter, energy
The transmission environment loss of photovoltaic electric energy is enough reduced, the photovoltaic efficiency of PV air-conditioner is further improved.
As shown in Fig. 2 DC converting unit 1 includes MPPT in the present embodiment（Maximal power tracing）Control module 11 and
DC converting module 12, MPPT control modules 11 receive control instruction, and control DC converting module 12 enters line translation to track pair
The peak power output for the photovoltaic module 4 answered.The present embodiment is by a DC converting unit 1 to each piece of photovoltaic module 4
Peak power is tracked, then directly drives frequency-conversion air-conditioning system, can realize the maximum of every piece of generating efficiency of photovoltaic module 4
Change.
In the present embodiment, DC converting module 12 include drive circuit 121 and be sequentially connected input fuse 122,
Input switch 123, boost chopper 124, output switch 125, are boosted input voltage by boost chopper 124
Conversion, the voltage of size needed for output.Boost chopper 124 specifically uses boost boost conversion circuits, according to required voltage
Grade control carries out boosting inverter, can also be according to the actual requirements using other chopper circuits.
The present embodiment MPPT control modules 11 are communicated to connect with converter unit 3, receive the air-conditioning frequency conversion that converter unit 3 is exported
State, export MPPT control instructions to drive circuit 121, by drive circuit 121 carry out power amplification after drive boost chopper
Circuit 124.
In the present embodiment, the input and output end of DC converting module 12 are additionally provided with lightning protection device, can also be according to reality
Border demand sets lightning protection device in input or output end.
In the present embodiment, converter unit 3 includes the first inversion module 31, and the AC of the first inversion module 31 is connected to sky
Compressor 5 is adjusted, the energy of dc bus is entered after line translation to be transferred to compressor of air conditioner 5.
In the present embodiment, converter unit 3 also includes the second inversion module 32, and the incoming transport power supply of the second inversion module 32 enters
Line translation is to supplement not enough power needed for air-conditioning.
Shown in Figure 1, the present embodiment converter unit 3 sets the first inversion module 31 in air conditioner compressed pusher side, in power network
Side sets the second inversion module 32, and the second inversion module 32 is Bidirectional variable-flow module, for DC side energy and power grid energy
Two-way changing is carried out, when photovoltaic generation power is less than power needed for air-conditioning, the second inversion module 32 works in rectification mode, leads to
The AC power for crossing Bidirectional variable-flow module access power network enters line translation to supplement not enough power needed for air-conditioning, and when photovoltaic hair
Electrical power is more than needed for air-conditioning during power, and the second inversion module 32 works in inverter mode, by feedback after unnecessary energy conversion
To power network, load etc. can also be fed back to according to demand, the recycling of electric energy is realized, further improve energy in PV air-conditioner
Utilization rate.
In the present embodiment, joining unit 2 is the junction station with lightning protection function.
Referring to Fig. 1, the above-mentioned PV air-conditioner power control of the present embodiment is specifically by each piece of photovoltaic module 4 respectively by straight
Flow converter unit 1 and carry out maximal power tracing（MPPT）, it is female by the direct current that converter unit 3 is delivered to after the confluxing of joining unit 2
Line, the alternating current needed for the energy of dc bus is reverse into by the first inversion module 31 of air conditioner compressed pusher side again is supplied to air-conditioning
Compressor 5；If the energy of photovoltaic generation is insufficient for the power demands of compressor of air conditioner 5, by the Bidirectional variable-flow of grid side
Module works in rectification mode, and the power supply of access power network provided after rectifying conversion the energy of deficiency；If the energy of photovoltaic generation
Amount runs on inverter mode by the Bidirectional variable-flow module of grid side, unnecessary electric energy is entered more than the power demands of compressor of air conditioner 5
Power network is fed back to after row inversion, if the ability of photovoltaic generation is just equal with the energy requirement of compressor of air conditioner 5, grid side is double
Do not worked to flow module is become.By above-mentioned PV air-conditioner power control, the maximum work of each piece of photovoltaic module 4 can be realized
Rate is tracked, it is ensured that the maximization of photovoltaic power generation quantity, while photovoltaic energy is simplified to the transmission link loaded, and can be with power network
Carry out complementary power supply and the recycling of energy.
Embodiment 2：
The present embodiment PV air-conditioner system specifically includes the photovoltaic module 4 being sequentially connected, the PV air-conditioner electricity of such as embodiment 1
The each correspondence of DC converting unit 1 one light of connection in source control device and air-conditioning device, PV air-conditioner power control
Component 4 is lied prostrate to control electric energy to export, the direct current of each DC converting module 1 output is after joining unit 2 confluxes, by frequency conversion
The inversion of unit 3 alternating current for needed for；Alternating current needed for the output of PV air-conditioner power control is supplied to the air-conditioning of air-conditioning device
Compressor 5 is powered.Using the above-mentioned PV air-conditioner system of the present embodiment, each piece of photovoltaic module 4 can be utilized to greatest extent
Photovoltaic power generation quantity, it is not only environmentally friendly, and save, efficiently.
Above-mentioned simply preferred embodiment of the present utility model, not makees any formal limitation to the utility model.Though
Right the utility model is disclosed above with preferred embodiment, but is not limited to the utility model.Therefore, it is every without departing from
The content of technical solutions of the utility model, any is simply repaiied according to the utility model technical spirit to made for any of the above embodiments
Change, equivalent variations and modification, all should fall in the range of technical solutions of the utility model protection.
Claims (10)
1. a kind of PV air-conditioner power control, it is characterised in that including multiple DC converting units（1）, joining unit（2）
And converter unit（3）, each described DC converting unit（1）Pass through the joining unit（2）With the converter unit（3）Even
Connect, each DC converting unit（1）Correspondence one photovoltaic module of connection（4）To control electric energy to export, each described direct current
Converter unit（1）The direct current of output passes through the joining unit（2）After confluxing, by the converter unit（3）Inversion is for needed for
Alternating current is supplied to air-conditioning.
2. PV air-conditioner power control according to claim 1, it is characterised in that：The DC converting unit（1）
Including MPPT control modules（11）And DC converting module（12）, the MPPT control modules（11）Receive control instruction, control
Make the DC converting module（12）Enter line translation to track the corresponding photovoltaic module（4）Peak power output.
3. PV air-conditioner power control according to claim 2, it is characterised in that：The DC converting module（12）
Including drive circuit（121）And the input fuse being sequentially connected（122）, input switch（123）, boost chopper
（124）, output switch（125）, pass through the boost chopper（124）Size needed for the boost in voltage of access is transformed to
Exported after voltage.
4. PV air-conditioner power control according to claim 3, it is characterised in that：The MPPT control modules（11）
Access the converter unit（3）The air-conditioning frequency conversion state of output, output control is instructed to the boost chopper（124）.
5. PV air-conditioner power control according to claim 4, it is characterised in that：The DC converting module（12）
Input and/or output end be additionally provided with lightning protection device.
6. the PV air-conditioner power control according to any one in Claims 1 to 5, it is characterised in that：It is described to become
Frequency unit（3）Including the first inversion module（31）, first inversion module（31）AC be connected to compressor of air conditioner
（5）.
7. PV air-conditioner power control according to claim 6, it is characterised in that：The converter unit（3）Also wrap
Include the second inversion module（32）, second inversion module（32）Incoming transport power supply enters line translation to supplement deficiency needed for air-conditioning
Power.
8. PV air-conditioner power control according to claim 7, it is characterised in that：Second inversion module（32）
Specially Bidirectional variable-flow module, the Bidirectional variable-flow module is when photovoltaic generation power is less than power needed for air-conditioning, incoming transport
Power supply enters line translation to supplement not enough power needed for air-conditioning, and when photovoltaic generation power is more than power needed for air-conditioning, will
Unnecessary energy conversion feeds back to power network or load.
9. the PV air-conditioner power control according to any one in Claims 1 to 5, it is characterised in that：It is described to converge
Flow unit（2）For the junction station with lightning protection function.
10. a kind of PV air-conditioner system, it is characterised in that including the photovoltaic module being sequentially connected（4）, in such as claim 1~9
It is each in PV air-conditioner power control and air-conditioning device described in any one, the PV air-conditioner power control
The DC converting unit（1）Correspondence one photovoltaic module of connection（4）To control electric energy to export, the PV air-conditioner power supply
Alternating current needed for device output is supplied to the compressor of air conditioner of the air-conditioning device（5）Power supply.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720303796.7U CN206575378U (en) | 2017-03-27 | 2017-03-27 | A kind of PV air-conditioner power control and PV air-conditioner system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720303796.7U CN206575378U (en) | 2017-03-27 | 2017-03-27 | A kind of PV air-conditioner power control and PV air-conditioner system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109167392A (en) * | 2018-10-09 | 2019-01-08 | 珠海格力电器股份有限公司 | A kind of system control method and photovoltaic system and air-conditioning system |
| CN112290580A (en) * | 2019-07-12 | 2021-01-29 | 合肥阳光新能源科技有限公司 | New energy hydrogen production system |
| CN113872245A (en) * | 2021-11-05 | 2021-12-31 | 阳光电源股份有限公司 | Distributed inversion system and starting method thereof |
-
2017
- 2017-03-27 CN CN201720303796.7U patent/CN206575378U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109167392A (en) * | 2018-10-09 | 2019-01-08 | 珠海格力电器股份有限公司 | A kind of system control method and photovoltaic system and air-conditioning system |
| CN109167392B (en) * | 2018-10-09 | 2020-07-24 | 珠海格力电器股份有限公司 | System control method, photovoltaic system and air conditioning system |
| CN112290580A (en) * | 2019-07-12 | 2021-01-29 | 合肥阳光新能源科技有限公司 | New energy hydrogen production system |
| CN113872245A (en) * | 2021-11-05 | 2021-12-31 | 阳光电源股份有限公司 | Distributed inversion system and starting method thereof |
| CN113872245B (en) * | 2021-11-05 | 2024-04-12 | 阳光电源股份有限公司 | Distributed inversion system and starting method thereof |
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