CN204046190U - Photovoltaic frequency conversion air conditioner - Google Patents
Photovoltaic frequency conversion air conditioner Download PDFInfo
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- CN204046190U CN204046190U CN201420383699.XU CN201420383699U CN204046190U CN 204046190 U CN204046190 U CN 204046190U CN 201420383699 U CN201420383699 U CN 201420383699U CN 204046190 U CN204046190 U CN 204046190U
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 35
- 238000004378 air conditioning Methods 0.000 claims abstract description 59
- 238000002955 isolation Methods 0.000 claims abstract description 25
- 230000005611 electricity Effects 0.000 claims abstract description 12
- 238000013519 translation Methods 0.000 claims description 16
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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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 variable frequency air conditioner, this air conditioner include photovoltaic grid-connected inverter system and variable frequency air conditioning system, and photovoltaic grid-connected inverter system includes photovoltaic cell, the power conversion circuit that electricity is connected in proper order and carries out the photovoltaic control circuit controlled to the power conversion circuit. The power conversion circuit comprises a booster circuit, a high-frequency isolation conversion circuit and an inverter circuit which are electrically connected in sequence; the variable frequency air conditioning system comprises an air conditioning control circuit, a power grid connecting end and a direct current bus connecting end; the photovoltaic control circuit is electrically connected with the air conditioner control circuit, the output end of the inverter circuit is electrically connected with the power grid connecting end, and the output end of the high-frequency isolation conversion circuit is electrically connected with the direct-current bus connecting end. The photovoltaic variable frequency air conditioner uses light energy to provide electric energy for the operation of the air conditioner, and reduces the operation cost of the air conditioner and the pressure of the air conditioner on a power grid. And the high-frequency isolation design is adopted, so that a high-frequency leakage current path is effectively blocked, and the overall safety of the system is improved.
Description
Technical field
The utility model relates to field of air conditioning, particularly relates to a kind of photovoltaic transducer air conditioning.
Background technology
Solar energy is the clean energy resource that the mankind are inexhaustible, nexhaustible, compared to traditional fossil energy, has green, the feature such as pollution-free, sustainable.Along with the lifting of scientific and technological level, the utilization of solar energy is also more and more extensive, and after solar energy trans-utilization, solar photovoltaic transformation of energy utilizes the study hotspot becoming 21 century.Air conditioning electricity, as the power consumption rich and influential family in household electricity, is provided by solar-energy photo-voltaic cell by air-conditioning, greatly can alleviate the load of electrical network, also contributes to the use cost reducing air-conditioning.
Combined with air-conditioning by parallel network reverse, design a kind of air conditioner with grid-connected function, can realize photovoltaic solar is that air-conditioning is powered, and the excessive loads caused electrical network when both can reduce using air-condition on daytime, can save electric cost expenditure again.Meanwhile, be again a small-sized photo-voltaic power generation station when air-conditioning leaves unused, can generate electricity by way of merging two or more grid systems.Domestic consumer is except meeting air-conditioning self need for electricity, and unnecessary electricity can feedback grid, for other electrical equipment provide electric energy.
Utility model content
Based on this, be necessary for air conditioning energy consumption excessive, cause the problem that use cost is too high, provide a kind of and can provide electric energy for self and the suitable photovoltaic transducer air conditioning to electrical network supply electric energy of energy and method for controlling power supply thereof.
For realizing a kind of photovoltaic transducer air conditioning that the object of the invention provides, comprise photovoltaic grid-connected inverting system and frequency-conversion air-conditioning system, described photovoltaic grid-connected inverting system comprises the photovoltaic cell, power conversion circuit and the photovoltaic control circuit that controls described power conversion circuit that are electrically connected successively, and described power conversion circuit comprises the booster circuit, high-frequency isolation translation circuit and the inverter circuit that are electrically connected successively; Described frequency-conversion air-conditioning system comprises ac control circuit, electrical network link and DC bus link, wherein:
Described photovoltaic control circuit is electrically connected with described ac control circuit, and the output of described inverter circuit is electrically connected with described electrical network link, and the output of described high-frequency isolation translation circuit is electrically connected with described DC bus link;
Described high-frequency isolation translation circuit is high frequency transformer;
The low-voltage DC that described booster circuit is used for photovoltaic cell exports is converted to high voltage direct current, described high frequency transformer is for suppressing the Ground leakage current of described photovoltaic grid-connected inverting system by the electrical isolation of primary coil and secondary coil, described inverter circuit is used for high voltage direct current to be converted to mains electricity.
As a kind of embodiment of photovoltaic transducer air conditioning, described power conversion circuit also comprises EMI filter circuit, and described EMI filter circuit is connected between described photovoltaic cell and described booster circuit.
As a kind of embodiment of photovoltaic transducer air conditioning, described photovoltaic grid-connected inverting system also comprises ON-OFF control circuit, described ON-OFF control circuit is electrically connected with the output of described high-frequency isolation translation circuit and the output of described inverter circuit, and described ON-OFF control circuit is electrically connected with described photovoltaic control circuit, for controlling conducting or the disconnection of described photovoltaic cell and described electrical network link and/or described DC bus link.
As a kind of embodiment of photovoltaic transducer air conditioning, described photovoltaic grid-connected inverting system also comprises the key control device be electrically connected with described photovoltaic control circuit, selects for the manual connection status to described photovoltaic grid-connected inverting system and frequency-conversion air-conditioning system.
As a kind of embodiment of photovoltaic transducer air conditioning, in described key control device, also comprise display unit, for showing parameter and the state information of described photovoltaic grid-connected inverting system.
As a kind of embodiment of photovoltaic transducer air conditioning, described photovoltaic control circuit comprises master controller, and the sampling be electrically connected with described master controller respectively and modulate circuit, protective circuit, drive circuit and telecommunication circuit, wherein:
Described sampling and modulate circuit, for the analog signal of sampled voltage, electric current, frequency, phase place and temperature, be input in described master controller after line level of going forward side by side conversion;
Described protective circuit is electrically connected with power device, to overvoltage, and/or overcurrent, and/or overheated abnormal conditions, control described power device emergency shutdown;
Described drive circuit provides drive current, to control conducting and the shutoff of described power device;
Described telecommunication circuit realizes the exchanges data with ac control circuit.
As a kind of embodiment of photovoltaic transducer air conditioning, described photovoltaic grid-connected inverting system also comprises power supply circuit, for providing galvanic current source for the low voltage equipment in described photovoltaic grid-connected inverting system.
The beneficial effects of the utility model comprise:
A kind of photovoltaic transducer air conditioning that the utility model provides and method for controlling power supply thereof, by power conversion circuit, the electric energy of photovoltaic cell being converted to high voltage direct current electric energy is that convertible frequency air-conditioner is powered, or the electric energy of photovoltaic cell is converted to alternating current to be fed in electrical network, use luminous energy to provide electric energy for operation of air conditioner, reduce the pressure that operation of air conditioner cost and operation of air conditioner bring electrical network.In the electric energy of photovoltaic cell being connected to the grid simultaneously, can being other electrical equipment supply electric energy, taking full advantage of luminous energy, reduce the power consumption of user's entirety, there is very large practical significance.And its high frequency isolation type design adopted, effectively block high-frequency leakage current path, improve security of system.
Accompanying drawing explanation
Fig. 1 is the structural representation of a specific embodiment of a kind of photovoltaic transducer air conditioning of the utility model;
Fig. 2 is the structural representation of the photovoltaic control circuit of a specific embodiment of a kind of photovoltaic transducer air conditioning of the utility model;
Fig. 3 is the flow chart of a specific embodiment of the method for controlling power supply of this kind of photovoltaic transducer air conditioning;
Fig. 4 is the air conditioning operating mode schematic diagram of the method for controlling power supply of this kind of photovoltaic transducer air conditioning.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, be described below in conjunction with the embodiment of accompanying drawing to photovoltaic transducer air conditioning of the present utility model and method for controlling power supply thereof.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
See Fig. 1, the photovoltaic transducer air conditioning of the utility model one embodiment, comprises photovoltaic grid-connected inverting system 100 and frequency-conversion air-conditioning system 200.Wherein, photovoltaic grid-connected inverting system 100 comprises the photovoltaic cell 110, power conversion circuit 120 and the photovoltaic control circuit 130 that controls described power conversion circuit 120 that are electrically connected successively.And as shown in Figure 1, power conversion circuit 120 comprises the booster circuit 122, high-frequency isolation translation circuit 123 and the inverter circuit 124 that are from left to right electrically connected successively.Frequency-conversion air-conditioning system 200 comprises ac control circuit 210, electrical network link 220 and DC bus link 230.Wherein, DC bus link connects the output of high-frequency isolation translation circuit 123 by DC bus 240.
Meanwhile, photovoltaic control circuit 130 is electrically connected with ac control circuit 210; The output of inverter circuit 124 is electrically connected with electrical network link 220 by wire; The output of high-frequency isolation translation circuit 123 is electrically connected with DC bus link 230 by wire, for conducting photovoltaic cell 110 and convertible frequency air-conditioner, for the compressor of convertible frequency air-conditioner provides electric energy.
It should be noted that, above-mentioned booster circuit 122 is converted to high voltage direct current for the low-voltage DC exported by photovoltaic cell, so as subsequent conversion be alternating current after as the power supply of convertible frequency air-conditioner.High-frequency isolation translation circuit 123 is for blocking the transmission channel of high frequency time variant voltage.Do in some embodiment, high frequency transformer can be selected as high-frequency isolation translation circuit 123.Adopt high frequency transformer electricity that high voltage direct current is carried out coupled transfer to secondary, transformer primary and secondary is made to realize electrical isolation, achieve the output of photovoltaic cell 110 and the Secure isolation of AC network and convertible frequency air-conditioner, block high frequency time variant voltage that the switching device that may exist in system produces by electrical network, inverter circuit, the photovoltaic cell common mode transmission path that formed of parasitic capacitance over the ground, reduce the photovoltaic cell high frequency common mode leakage current that system produces to mains supply and in network process, promote the fail safe of photovoltaic transducer air conditioning entirety.Inverter circuit 124 for high voltage direct current is converted to mains electricity so that in the electric energy of photovoltaic cell being connected to the grid by electrical network link.
It is that convertible frequency air-conditioner is powered that the electric energy of photovoltaic cell is converted to high voltage direct current electric energy by power conversion circuit 120 by the photovoltaic transducer air conditioning of the utility model embodiment, or the electric energy of photovoltaic cell is converted to alternating current to be fed in electrical network, use luminous energy to provide electric energy for operation of air conditioner, reduce the pressure that operation of air conditioner cost and operation of air conditioner bring electrical network.During the electric energy of the photovoltaic cell simultaneously in the utility model embodiment can also be connected to the grid, be other electrical equipment supply electric energy, take full advantage of luminous energy, reduce the power consumption of user's entirety, there is very large practical significance.And employ high-frequency isolation translation circuit 123, if do not use this device, it is then the non-isolated air conditioner with photovoltaic DC-to-AC converter function, its photovoltaic cell and AC network exist and are electrically connected, low impedance path can be formed between electrical network, inverter circuit, photovoltaic cell parasitic capacitance, the high-frequency leakage current produced in this path can bring conduction and radiated interference, the humorous increase involving loss of grid current, even jeopardizes equipment and personal security.Therefore, the high frequency isolation type design that the utility model adopts, effectively blocks high-frequency leakage current path, improves security of system.
Wherein in an embodiment, power conversion circuit 120 also comprises EMI filter circuit 121, and described EMI filter circuit 121 is connected between photovoltaic cell 110 and booster circuit 122.The common and different mode interference that EMI filter circuit 121 inputs through photovoltaic cell 110 for filtering, and the protection such as lightning-protection surge.
Wherein in an embodiment, booster circuit 122 is except for being upgraded to except High Level DC Voltage by the low dc voltage of photovoltaic cell, also carry out photovoltaic Maximum Power Output point and follow the tracks of (MPPT), MPPT function, photovoltaic current output voltage and electric current is gathered by MPPT algorithm, and rated output, and control the maximum power point following the trail of photovoltaic cell output, and remain on maximum power point by the power output that photovoltaic control circuit 130 controls photovoltaic cell, improve photovoltaic utilance.
Wherein in an embodiment, photovoltaic grid-connected inverting system 100 also comprises ON-OFF control circuit (not shown).The output of ON-OFF control circuit and described high-frequency isolation translation circuit 123, that is, to one end of DC bus output voltage, and the output of inverter circuit 124, namely photovoltaic parallel in system connects grid connection point one end to electrical network conveying voltage, electrical connection.And ON-OFF control circuit is electrically connected with photovoltaic control circuit, for controlling conducting or the disconnection of described photovoltaic cell and described electrical network link and/or described DC bus link.When photovoltaic cell is only powered to convertible frequency air-conditioner, then the conducting of ON-OFF control circuit control connection DC bus end, powers to convertible frequency air-conditioner, controls electrical network link and disconnects; When photovoltaic cell is only to mains supply, then the output of the inverter circuit of ON-OFF control circuit control connection electrical network link is communicated with electrical network link, makes photovoltaic cell to mains supply; When intensity of illumination is larger, photovoltaic cell while powering to convertible frequency air-conditioner also to mains supply time, ON-OFF control circuit controls high_voltage isolation translation circuit 123 output and the conducting of DC bus link, and control inverter circuit 124 and the conducting of electrical network link simultaneously, realize photovoltaic cell simultaneously to convertible frequency air-conditioner and mains supply.
Preferably, above-mentioned photovoltaic grid-connected inverting system also has network voltage detection function, can the amplitude of detection of grid voltage, frequency and phase information, and by these information transmission in photovoltaic control circuit, control the conversion work of carrying out the inverter circuit of electric energy output.
Wherein in an embodiment, photovoltaic grid-connected inverting system 100 also comprises the key control device 140 be electrically connected with photovoltaic control circuit 130, selects for the manual operating state to described photovoltaic grid-connected inverting system and frequency-conversion air-conditioning system.Key control device 140 can be connected with aforesaid ON-OFF control circuit, so then can manually realize directly to the control of supplying power for photovoltaic cell mode.As another kind of execution mode, as shown in Figure 1, also key control device 140 can be electrically connected with photovoltaic control circuit 130, by transmission button control signal to photovoltaic control circuit, be controlled by the power supply state of photovoltaic control circuit to photovoltaic cell.
More, wherein in an embodiment, in key control device 140, also comprise display unit (not shown), for showing various parameter and the state information of photovoltaic grid-connected inverting system.Wherein display unit can be a LCDs.
Further, key control device 140 also can for realizing the man-machine interaction circuit of man-machine interaction, and it can realize the display of information, the interactive function such as Non-follow control and auditory tone cues.
Concrete, as shown in Figure 2, photovoltaic control circuit 130 comprises master controller 131, and the sampling be electrically connected with described master controller respectively and modulate circuit 132, protective circuit 133, drive circuit 134 and telecommunication circuit 135.Wherein, sampling and modulate circuit 132, for the analog signal of sampled voltage, electric current, frequency, phase place and temperature, be input in described master controller after line level of going forward side by side conversion, by master controller, design parameter is judged, and control the operation of associated components according to judged result, or directly Parameter transfer is fed the parts of row relax.As the information such as overvoltage, overcurrent is passed to protective circuit etc.Protective circuit 133 is electrically connected with power device, to overvoltage, and/or overcurrent, and/or overheated abnormal conditions, control described power device emergency shutdown.Drive circuit 134 provides drive current, to control the timely conducting of described power device and shutoff.Telecommunication circuit 135 realizes the exchanges data with ac control circuit.Receive operate power information and the whether operation information etc. of convertible frequency air-conditioner.And transmit the information whether using photovoltaic cell to power to it.
Wherein in an embodiment, described photovoltaic grid-connected inverting system also comprises power supply circuit 150, for providing galvanic current source for the low voltage equipment in described photovoltaic grid-connected inverting system.Ensure that low voltage equipment normally runs.
Frequency-conversion air-conditioning system in the utility model and conventional inverter air-conditioning similar, comprise ac control circuit 210, EMI filter circuit 250, full bridge rectifier 260, pfc circuit 270, compressor 280 and drive circuit (not shown) thereof, blower fan and drive circuit (not shown), interior machine telecommunication circuit 290 (interior machine, combining inverter), ac control circuit 210 etc.And the DC bus that the pfc circuit 270 of convertible frequency air-conditioner in the utility model exports is connected with the DC bus that grid-connected inverter circuit exports; The electrical network link of convertible frequency air-conditioner and the inversion of inverter circuit export and are electrically connected.
The high-frequency conduction produced when wherein EMI filter circuit 250 works for filtering convertible frequency air-conditioner and radiation, reduce the interference to AC network; Alternating voltage is become the forward voltage of pulsation by full bridge rectifier 260; The voltage of pulsation is shaped as constant voltage and is raised by its voltage by pfc circuit 270, access DC bus, and pfc circuit 270 also has power factor emendation function simultaneously, makes AC-input voltage and input current homophase; Compressor 280 and drive circuit thereof, for controlling compressor, make it normally work, and realize the refrigeration of air-conditioning or heat running; Blower fan and drive circuit thereof for controlling start-stop or the rotating speed of blower fan, for be air-conditioning condenser heat radiation; Ac control circuit 210 is connected with photovoltaic control circuit 130 communication, realizes exchanges data; Interior machine telecommunication circuit 290 realizes the communication with interior machine.
Preferably, wherein in an embodiment, above-mentioned photovoltaic grid-connected inverting system also has the islanding detect function realized by photovoltaic control circuit, the voltage of islanding detect algorithm Sample AC electrical network, when electric network power-fail being detected, disconnect the electrical connection of inverter circuit output and AC network in time.And detect electrical network again electric time, control the electrical connection of conducting inverter circuit output and AC network, photovoltaic cell can be continued to mains supply.
For above-mentioned photovoltaic transducer air conditioning, power supply control can be carried out according to following method for controlling power supply.
The method for controlling power supply of the photovoltaic transducer air conditioning of one of them embodiment, as shown in Figure 3, comprises the following steps:
S100, detects the power output of photovoltaic cell and the operating power of convertible frequency air-conditioner.This work can have the photovoltaic control circuit in aforementioned air conditioner to complete, and can arrange the work that corresponding detecting unit completes this step in described photovoltaic control circuit.Photovoltaic control circuit is transferred to after the operating power of convertible frequency air-conditioner also can be completed by ac control circuit.
S200, calculates the difference of the power output of photovoltaic cell and the operating power of convertible frequency air-conditioner.This work can be completed by the photovoltaic control circuit in aforementioned air conditioner equally, can arrange the work that corresponding computing unit completes this step in described photovoltaic control circuit.
S300, controls the running status of described convertible frequency air-conditioner according to the size of described difference.Described running status comprises photovoltaic power supply pattern, hybrid power supply pattern and remaining electric grid-connect mode;
When described convertible frequency air-conditioner operates under described photovoltaic power supply pattern, separately described convertible frequency air-conditioner is powered by described photovoltaic cell; When described convertible frequency air-conditioner operates under described hybrid power supply pattern, described convertible frequency air-conditioner is powered by described photovoltaic cell and electrical network simultaneously; When described convertible frequency air-conditioner operates in described remaining electric grid-connect mode, described photovoltaic cell supplies electric energy to described electrical network while powering to described convertible frequency air-conditioner separately.
It should be noted that herein, when the power output of photovoltaic cell is greater than the operating power of convertible frequency air-conditioner, and when exceeding certain limit, namely the power output of photovoltaic cell and the operating power of convertible frequency air-conditioner difference on the occasion of and exceed preset value.If preset value is 10W, then when difference is greater than 10W, air-conditioning work is under remaining electric grid-connect mode, and now light intensity is comparatively strong, and photovoltaic cell is when meeting air-conditioning power itself, and electricity of can also having a surplus is transported in electrical network.When difference is more than or equal to 0 and is less than or equal to 10, then control air-conditioning work under photovoltaic power supply pattern, now photovoltaic cell can meet merely convertible frequency air-conditioner self electric quantity demand, and convertible frequency air-conditioner can normally run without the need to mains supply.When difference is less than 0, now control operation of air conditioner under hybrid power supply pattern, now photovoltaic cell can not meet the need for electricity of convertible frequency air-conditioner self, needs electrical network to power to convertible frequency air-conditioner simultaneously.
As shown in Figure 4, described running status also comprises normal operation mode.When convertible frequency air-conditioner operates under described normal operation mode, powered separately by described electrical network to described convertible frequency air-conditioner, now convertible frequency air-conditioner is identical with the operating state of common convertible frequency air-conditioner, and photovoltaic cell can think to be in closed condition.Certainly, photovoltaic cell is i.e. state for this reason in damage.Also have a common grid-connect mode in addition, when described convertible frequency air-conditioner is in off-duty state, described photovoltaic cell, to described electrical network supply electric energy, now thinks common grid-connect mode.It should be noted that, even if air-conditioning is in the photovoltaic cell that makes that running status also can be artificial supply electric energy to electrical network, and air-conditioning is powered separately by electrical network, and the electric energy of now photovoltaic cell supply can be used for other electric power supplies for user.
The above embodiment only have expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but therefore can not 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 range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (7)
1. a photovoltaic transducer air conditioning, comprise photovoltaic grid-connected inverting system and frequency-conversion air-conditioning system, described photovoltaic grid-connected inverting system comprises the photovoltaic cell, power conversion circuit and the photovoltaic control circuit that controls described power conversion circuit that are electrically connected successively, it is characterized in that, described power conversion circuit comprises the booster circuit, high-frequency isolation translation circuit and the inverter circuit that are electrically connected successively; Described frequency-conversion air-conditioning system comprises ac control circuit, electrical network link and DC bus link, wherein:
Described photovoltaic control circuit is electrically connected with described ac control circuit, and the output of described inverter circuit is electrically connected with described electrical network link, and the output of described high-frequency isolation translation circuit is electrically connected with described DC bus link;
Described high-frequency isolation translation circuit is high frequency transformer;
The low-voltage DC that described booster circuit is used for photovoltaic cell exports is converted to high voltage direct current, described high frequency transformer is for suppressing the Ground leakage current of described photovoltaic grid-connected inverting system by the electrical isolation of primary coil and secondary coil, described inverter circuit is used for high voltage direct current to be converted to mains electricity.
2. photovoltaic transducer air conditioning according to claim 1, is characterized in that, described power conversion circuit also comprises EMI filter circuit, and described EMI filter circuit is connected between described photovoltaic cell and described booster circuit.
3. photovoltaic transducer air conditioning according to claim 1, it is characterized in that, described photovoltaic grid-connected inverting system also comprises ON-OFF control circuit, described ON-OFF control circuit is electrically connected with the output of described high-frequency isolation translation circuit and the output of described inverter circuit, and described ON-OFF control circuit is electrically connected with described photovoltaic control circuit, for controlling conducting or the disconnection of described photovoltaic cell and described electrical network link and/or described DC bus link.
4. photovoltaic transducer air conditioning according to claim 3, it is characterized in that, described photovoltaic grid-connected inverting system also comprises the key control device be electrically connected with described photovoltaic control circuit, selects for the manual connection status to described photovoltaic grid-connected inverting system and frequency-conversion air-conditioning system.
5. photovoltaic transducer air conditioning according to claim 4, is characterized in that, also comprises display unit in described key control device, for showing parameter and the state information of described photovoltaic grid-connected inverting system.
6. photovoltaic transducer air conditioning according to claim 1, is characterized in that, described photovoltaic control circuit comprises master controller, and the sampling be electrically connected with described master controller respectively and modulate circuit, protective circuit, drive circuit and telecommunication circuit, wherein:
Described sampling and modulate circuit, for the analog signal of sampled voltage, electric current, frequency, phase place and temperature, be input in described master controller after line level of going forward side by side conversion;
Described protective circuit is electrically connected with power device, to overvoltage, and/or overcurrent, and/or overheated abnormal conditions, control described power device emergency shutdown;
Described drive circuit provides drive current, to control conducting and the shutoff of described power device;
Described telecommunication circuit realizes the exchanges data with ac control circuit.
7. the photovoltaic transducer air conditioning according to any one of claim 1 to 6, is characterized in that, described photovoltaic grid-connected inverting system also comprises power supply circuit, for providing galvanic current source for the low voltage equipment in described photovoltaic grid-connected inverting system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420383699.XU CN204046190U (en) | 2014-07-11 | 2014-07-11 | Photovoltaic frequency conversion air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420383699.XU CN204046190U (en) | 2014-07-11 | 2014-07-11 | Photovoltaic frequency conversion air conditioner |
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| CN204046190U true CN204046190U (en) | 2014-12-24 |
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| CN201420383699.XU Expired - Lifetime CN204046190U (en) | 2014-07-11 | 2014-07-11 | Photovoltaic frequency conversion air conditioner |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104135027A (en) * | 2014-07-11 | 2014-11-05 | 珠海格力电器股份有限公司 | Photovoltaic variable frequency air conditioner and power supply control method thereof |
| CN106500219A (en) * | 2016-11-24 | 2017-03-15 | 广东美的制冷设备有限公司 | Solar airconditioning and its control method, control device |
| CN110068114A (en) * | 2019-04-24 | 2019-07-30 | 上海交通大学 | Photovoltaic variable frequency air conditioner power control method and control device |
| CN112039068A (en) * | 2020-09-04 | 2020-12-04 | 深圳市尚科新能源有限公司 | Photovoltaic water lifting system |
-
2014
- 2014-07-11 CN CN201420383699.XU patent/CN204046190U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104135027A (en) * | 2014-07-11 | 2014-11-05 | 珠海格力电器股份有限公司 | Photovoltaic variable frequency air conditioner and power supply control method thereof |
| CN104135027B (en) * | 2014-07-11 | 2016-09-14 | 珠海格力电器股份有限公司 | Photovoltaic variable frequency air conditioner and power supply control method thereof |
| CN106500219A (en) * | 2016-11-24 | 2017-03-15 | 广东美的制冷设备有限公司 | Solar airconditioning and its control method, control device |
| CN110068114A (en) * | 2019-04-24 | 2019-07-30 | 上海交通大学 | Photovoltaic variable frequency air conditioner power control method and control device |
| CN112039068A (en) * | 2020-09-04 | 2020-12-04 | 深圳市尚科新能源有限公司 | Photovoltaic water lifting system |
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Granted publication date: 20141224 |