CN107453413B - Photovoltaic air conditioner power supply system and method - Google Patents
Photovoltaic air conditioner power supply system and method Download PDFInfo
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- CN107453413B CN107453413B CN201710595800.6A CN201710595800A CN107453413B CN 107453413 B CN107453413 B CN 107453413B CN 201710595800 A CN201710595800 A CN 201710595800A CN 107453413 B CN107453413 B CN 107453413B
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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
- H02J4/00—Circuit arrangements for mains or distribution networks not specified as ac or dc
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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 invention discloses a photovoltaic air conditioner power supply system and a photovoltaic air conditioner power supply method. The system comprises: a mains supply for outputting alternating current; the photovoltaic simulator is connected with the mains supply and is used for carrying out photovoltaic power generation according to alternating current output by the mains supply and outputting photovoltaic direct current; the photovoltaic air conditioner is respectively connected with the photovoltaic simulator and the mains supply, and photovoltaic direct current output by the photovoltaic simulator and alternating current output by the mains supply power for a unit of the photovoltaic air conditioner so as to debug the photovoltaic air conditioner. The invention solves the problem that the debugging period of the photovoltaic air conditioner is longer because the test photovoltaic air conditioner unit depends on the installation progress of the solar panel in the related technology.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a photovoltaic air conditioner power supply system and method.
Background
The photovoltaic air conditioner is environment-friendly, accords with the national development strategy of clean energy, and receives more and more customer attention. Before each photovoltaic air conditioner leaves the factory, each photovoltaic air conditioner needs to be tested, for example, the photovoltaic mode of each photovoltaic air conditioner can be tested. The photovoltaic mode test for the photovoltaic air conditioner is generally arranged in an installation and debugging stage, and the photovoltaic air conditioner unit is tested according to the installation progress of the solar panel due to the fact that the installation of the air conditioner and the installation of the solar panel are not synchronous, so that the debugging period of the photovoltaic air conditioner unit is longer.
Aiming at the problem that in the related art, the test photovoltaic air conditioner unit depends on the installation progress of a solar panel, so that the debugging period of the photovoltaic air conditioner is longer, no effective solution is proposed at present.
Disclosure of Invention
The invention mainly aims to provide a photovoltaic air conditioner power supply system and a power supply method, which are used for solving the problem that the debugging period of a photovoltaic air conditioner is long because a test photovoltaic air conditioner unit depends on the installation progress of a solar panel in the related technology.
In order to achieve the above object, according to one aspect of the present invention, there is provided a photovoltaic air conditioner power supply system. The system comprises: a mains supply for outputting alternating current; the photovoltaic simulator is connected with the mains supply and is used for carrying out photovoltaic power generation according to the alternating current output by the mains supply and outputting photovoltaic direct current; and the photovoltaic air conditioner is respectively connected with the photovoltaic simulator and the mains supply, and photovoltaic direct current output by the photovoltaic simulator and alternating current output by the mains supply power for a unit of the photovoltaic air conditioner so as to debug the photovoltaic air conditioner.
Further, the system further comprises: and the variable frequency power supply equipment is connected with the mains supply and is used for stabilizing the voltage of the alternating current output by the mains supply so as to stabilize the voltage of the alternating current output by the variable frequency power supply equipment within a preset voltage range.
Further, the system further comprises: and the transformer is connected with the mains supply and is used for converting alternating current output by the mains supply into target voltage and transmitting the target voltage to the photovoltaic simulator to supply power for the photovoltaic simulator.
Further, the transformer is further used for being connected with the variable-frequency power supply equipment, converting alternating current output by the variable-frequency power supply equipment into target voltage, and transmitting the target voltage to the photovoltaic simulator to supply power for the photovoltaic simulator.
Further, the system further comprises: the first relay is used for being electrically closed when the first switch is closed, one end of the transformer is communicated with the photovoltaic simulator, and the other end of the transformer is communicated with the mains supply or the variable-frequency power supply equipment under the condition that the first relay is electrically closed.
Further, the system further comprises: and the second relay is used for being electrically closed when the second switch is closed, and the photovoltaic simulator is communicated with the mains supply or the variable-frequency power supply equipment under the condition that the second relay is electrically closed.
Further, the system further comprises: the first judging unit is arranged in the unit of the photovoltaic air conditioner and is used for judging whether the power of the photovoltaic direct current output by the photovoltaic simulator is larger than the rated power of the unit of the photovoltaic air conditioner under the condition that the photovoltaic simulator outputs the photovoltaic direct current according to the alternating current output by the mains supply; the first calculation unit is arranged in the unit of the photovoltaic air conditioner and is used for calculating a first power difference value under the condition that the power of the photovoltaic direct current output by the photovoltaic simulator is larger than the rated power of the unit of the photovoltaic air conditioner, wherein the first power difference value is a difference value between the power of the photovoltaic direct current output by the photovoltaic simulator and the rated power of the unit of the photovoltaic air conditioner; and one end of the first transmission unit is connected with the unit of the photovoltaic air conditioner, and the other end of the first transmission unit is connected with the photovoltaic simulator and is used for transmitting a first power difference value in the unit of the photovoltaic air conditioner to the photovoltaic simulator so as to supply power for the photovoltaic simulator.
Further, the system further comprises: the second judging unit is arranged in the unit of the photovoltaic air conditioner and is used for judging whether the power of the photovoltaic direct current output by the photovoltaic simulator is larger than the rated power of the unit of the photovoltaic air conditioner under the condition that the photovoltaic simulator generates the photovoltaic power according to the power output by the variable-frequency power supply equipment and outputs the photovoltaic direct current; the second calculation unit is arranged in the unit of the photovoltaic air conditioner and is used for calculating a second power difference value under the condition that the power of the photovoltaic direct current output by the photovoltaic simulator is larger than the rated power of the unit of the photovoltaic air conditioner, wherein the second power difference value is a difference value between the power of the photovoltaic direct current output by the photovoltaic simulator and the rated power of the unit of the photovoltaic air conditioner; and one end of the second transmission unit is connected with the unit of the photovoltaic air conditioner, and the other end of the second transmission unit is connected with the photovoltaic simulator and is used for transmitting a second power difference value in the unit of the photovoltaic air conditioner to the photovoltaic simulator so as to supply power for the photovoltaic simulator.
In order to achieve the above object, according to another aspect of the present invention, there is provided a power supply method of a photovoltaic air conditioner, comprising: receiving alternating current output by a mains supply to perform photovoltaic power generation; obtaining photovoltaic direct current generated by photovoltaic power generation; and supplying power to the unit of the photovoltaic air conditioner according to the alternating current output by the mains supply and the photovoltaic direct current so as to debug the photovoltaic air conditioner.
Further, before receiving the alternating current output by the mains supply for photovoltaic power generation, the method further comprises: performing voltage stabilization treatment on the alternating current output by the mains supply to obtain alternating current with voltage stabilized in a preset voltage range; receiving alternating current output by a mains supply for photovoltaic power generation comprises: and receiving the alternating current with the voltage stabilized in a preset voltage range to perform photovoltaic power generation.
According to the invention, the photovoltaic simulator can be utilized to carry out photovoltaic power generation according to alternating current output by a mains supply, photovoltaic direct current is output, and the photovoltaic air conditioner unit is powered according to the photovoltaic direct current output by the photovoltaic simulator and alternating current output by the mains supply, so that the photovoltaic air conditioner unit is debugged without being limited by a solar panel to provide photovoltaic power.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of a photovoltaic air conditioner power supply system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an alternative photovoltaic air conditioner power system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of interlocking power supply lines in an alternative photovoltaic air conditioner control system according to the present invention;
FIG. 4 is a schematic diagram of an alternative photovoltaic air conditioner power system in accordance with an embodiment of the present invention;
FIG. 5 is a schematic diagram II of an alternative photovoltaic air conditioner power system according to an embodiment of the present invention;
FIG. 6 is a schematic diagram III of an alternative photovoltaic air conditioner power system according to an embodiment of the present invention;
FIG. 7 is a schematic diagram IV of an alternative photovoltaic air conditioner power system according to an embodiment of the present invention;
FIG. 8 is a schematic diagram fifth alternative photovoltaic air conditioner power system according to an embodiment of the present invention;
FIG. 9 is a schematic diagram six of an alternative photovoltaic air conditioner power system according to an embodiment of the present invention;
fig. 10 is a flowchart of a power supply method of a photovoltaic air conditioner according to an embodiment of the present invention.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In order to achieve the above object, according to one aspect of the present invention, there is provided a photovoltaic air conditioner power supply system. Fig. 1 is a schematic diagram of a photovoltaic air conditioner power supply system according to an embodiment of the present invention, as shown in fig. 1, the system includes:
a mains supply 11 for outputting alternating current;
the photovoltaic simulator 13 is connected with a mains supply, and is used for carrying out photovoltaic power generation according to alternating current output by the mains supply and outputting photovoltaic direct current;
and the photovoltaic air conditioner 15 is respectively connected with the photovoltaic simulator and the mains supply, and photovoltaic direct current output by the photovoltaic simulator and alternating current output by the mains supply power for a unit of the photovoltaic air conditioner so as to debug the photovoltaic air conditioner.
According to the embodiment, the photovoltaic simulator can be utilized to carry out photovoltaic power generation according to alternating current output by a mains supply, photovoltaic direct current is output, and the photovoltaic air conditioner is powered by the photovoltaic direct current output by the photovoltaic simulator and alternating current output by the mains supply, so that the photovoltaic air conditioner is debugged, the photovoltaic air conditioner is not limited by a solar panel to provide photovoltaic power, the photovoltaic power generation is carried out through alternating current output by the mains supply, the photovoltaic air conditioner is debugged in real time, the photovoltaic direct current is not required to be provided by the solar panel, the debugging time of the photovoltaic air conditioner can be correspondingly reduced, the photovoltaic power is adopted to carry out photovoltaic power generation, the photovoltaic air conditioner can be debugged without waiting for the end of a solar panel installing process, the effect of shortening the debugging period of the photovoltaic air conditioner is achieved, and the problem that the test photovoltaic air conditioner depends on the installation progress of the solar panel in the related technology, and the debugging period of the photovoltaic air conditioner is longer is solved.
Alternatively, the above-mentioned mains supply may be a conventional power supply provided by the national grid, and the voltage value may be fixed, such as 220v,380v. After the photovoltaic air conditioning unit is installed, a mains supply can be connected to obtain fixed alternating current, and then the photovoltaic air conditioning unit is driven to operate.
Optionally, the photovoltaic air conditioning unit can adopt a mode of combining mains supply and photovoltaic power supply to supply power, after the photovoltaic voltage provided by the photovoltaic simulator is collected, the photovoltaic air conditioning unit is supplied with power, if the electric energy of the photovoltaic power supply is insufficient, the part with insufficient electric energy can be complemented by the mains supply, and if the electric energy of the photovoltaic power supply has an excessive place, the excessive photovoltaic electric energy can be returned to the photovoltaic simulator to supply the electric energy output of the photovoltaic simulator next time. Optionally, the electric energy of the photovoltaic simulator in the invention can be converted by alternating current output by a mains supply, and after the electric energy is converted into photovoltaic electric energy, the photovoltaic electric energy is output to a photovoltaic air conditioner unit so as to debug the running condition of the photovoltaic air conditioner under the condition of inputting the photovoltaic electric energy and the mains supply electric energy.
In another alternative embodiment, the photovoltaic simulator can be equipment for simulating output photovoltaic electric energy, so that debugging of the photovoltaic air conditioner unit can be performed without waiting for building the solar electric energy panel, and dependence on the solar energy panel when testing the debugging of the photovoltaic air conditioner unit is reduced.
Optionally, the photovoltaic air conditioner can be equipment combining a photovoltaic simulator with an air conditioning unit, so that the photovoltaic air conditioner can operate by combining electric energy output by a mains supply under the condition that photovoltaic electric energy is provided by solar energy, the use of the mains supply electric energy can be reduced, the use of the electric energy is saved, and the power consumption of the electric energy is reduced.
Alternatively, the mains voltage output by the mains supply in the invention may have impurities, which cause the output voltage to be unstable, and then the voltage can be stabilized by the variable frequency power supply device. Optionally, the system further includes: the variable frequency power supply equipment is connected with a mains supply and is used for stabilizing the alternating current output by the mains supply so as to stabilize the voltage of the alternating current output by the variable frequency power supply equipment within a preset voltage range.
Through the embodiment, the output mains voltage can be stabilized, so that the mains voltage output to the photovoltaic air conditioning unit and the mains voltage output to the photovoltaic simulator are stable, and the debugging efficiency of the photovoltaic air conditioning unit can be improved. One end of the variable-frequency power supply equipment can be connected with a mains supply, and the other end of the variable-frequency power supply equipment can be respectively connected with a photovoltaic air conditioning unit and a photovoltaic simulator and is used for outputting stable mains supply voltage to the photovoltaic air conditioning unit and the photovoltaic simulator.
Optionally, the system may further include: and the transformer is connected with the mains supply and used for converting alternating current output by the mains supply into target voltage and transmitting the target voltage to the photovoltaic simulator to supply power for the photovoltaic simulator.
Through the embodiment, the transformer can be arranged between the variable-frequency power supply device and the photovoltaic simulator, the transformer can be used for converting the mains voltage output by the variable-frequency voltage device into the voltage which can be used by the photovoltaic simulator, for example, the mains voltage output by the variable-frequency voltage device is 380V, the voltage which can be used by the photovoltaic simulator is 220V, and at the moment, the transformer can be used for converting the 380V mains voltage into the 220V voltage for the photovoltaic simulator. If the voltage used by the photovoltaic simulator is the same as the voltage output by the variable-frequency voltage equipment, the transformer is not needed to be used, and the mains voltage is directly output to the photovoltaic simulator for the photovoltaic simulator to convert into photovoltaic electric energy.
Optionally, the electric energy used by the photovoltaic simulator in the above embodiment includes two aspects, namely, alternating current output by a mains supply on one hand, and electric energy which is not used up by the photovoltaic air conditioner unit on the other hand, is returned to the photovoltaic simulator for the next use of the photovoltaic simulator. If the electric energy used by the photovoltaic air conditioner unit is not remained, the electric energy of the photovoltaic simulator is only alternating current output by a mains supply.
Optionally, the transformer is further used for being connected with the variable frequency power supply device, and is used for converting alternating current output by the variable frequency power supply device into target voltage, and transmitting the target voltage to the photovoltaic simulator to supply power for the photovoltaic simulator. The target voltage may be a voltage used by a photovoltaic simulator, such as the 220V voltage described above.
In another alternative embodiment, the system may further include: the first relay is used for being electrically closed when the first switch is closed, one end of the transformer is communicated with the photovoltaic simulator, and the other end of the transformer is communicated with a mains supply or a variable-frequency power supply device.
Optionally, the first relay in the above embodiment may be disposed between the variable frequency voltage device and the transformer, where the first relay is used to control the transformer to be turned on or off, and when the voltage output by the variable frequency voltage device is inconsistent with the target voltage used by the photovoltaic simulator, the first relay may be closed, so that the ac power output by the mains supply is converted into the target voltage used by the photovoltaic simulator by the transformer.
Optionally, the system further comprises: and the second relay is used for being electrically closed when the second switch is closed, and the photovoltaic simulator is communicated with a mains supply or a variable-frequency power supply device under the condition that the second relay is electrically closed.
By the embodiment, when the voltage output by the variable-frequency voltage device is the same as the target voltage used by the photovoltaic simulator, the second relay can be utilized, and the variable-frequency voltage device and the photovoltaic simulator are directly connected, so that the mains voltage is output to the photovoltaic simulator. Alternatively, the first relay may be opened when the second relay is closed, thereby ensuring that the voltage output to the photovoltaic simulator is stable. Alternatively, when the first relay is closed, the second relay may be opened, so as to ensure that the mains voltage output to the transformer is stable, and the voltage converted by the transformer is output to the photovoltaic simulator, so that the photovoltaic simulator cannot receive the two voltages.
Optionally, the system further comprises: the first judging unit is arranged in the unit of the photovoltaic air conditioner and is used for judging whether the power of the photovoltaic direct current output by the photovoltaic simulator is larger than the rated power of the unit of the photovoltaic air conditioner under the condition that the photovoltaic simulator generates the photovoltaic power according to the alternating current output by the mains supply and outputs the photovoltaic direct current; the first calculation unit is arranged in the unit of the photovoltaic air conditioner and is used for calculating a first power difference value under the condition that the power of the photovoltaic direct current output by the photovoltaic simulator is larger than the rated power of the unit of the photovoltaic air conditioner, wherein the first power difference value is the difference value between the power of the photovoltaic direct current output by the photovoltaic simulator and the rated power of the unit of the photovoltaic air conditioner; and one end of the first transmission unit is connected with the unit of the photovoltaic air conditioner, and the other end of the first transmission unit is connected with the photovoltaic simulator and is used for transmitting a first power difference value in the unit of the photovoltaic air conditioner to the photovoltaic simulator so as to supply power for the photovoltaic simulator.
Through the embodiment, whether the photovoltaic electric energy output by the photovoltaic simulator is enough to be used by the photovoltaic air conditioner unit can be determined, and if the electric energy output by the photovoltaic simulator is enough to be used by the photovoltaic air conditioner unit, the surplus electric energy can be returned to the photovoltaic simulator to supply power for the photovoltaic simulator.
In the above embodiment, the electric energy used by the photovoltaic simulator is not stabilized by the variable-frequency power supply device, the alternating current output by the mains supply can be directly output to the photovoltaic simulator, and if the voltage of the mains supply is different from the voltage used by the photovoltaic simulator, the transformer can be used for transforming the voltage, so that the voltage which can be used by the photovoltaic simulator is obtained, and the voltage which can be used by the photovoltaic simulator is further output to the photovoltaic simulator.
Optionally, the system may further include: the second judging unit is arranged in the unit of the photovoltaic air conditioner and is used for judging whether the power of the photovoltaic direct current output by the photovoltaic simulator is larger than the rated power of the unit of the photovoltaic air conditioner under the condition that the photovoltaic simulator generates the photovoltaic power according to the power output by the variable-frequency power supply equipment and outputs the photovoltaic direct current; the second calculation unit is arranged in the unit of the photovoltaic air conditioner and is used for calculating a second power difference value under the condition that the power of the photovoltaic direct current output by the photovoltaic simulator is larger than the rated power of the unit of the photovoltaic air conditioner, wherein the second power difference value is the difference value between the power of the photovoltaic direct current output by the photovoltaic simulator and the rated power of the unit of the photovoltaic air conditioner; and one end of the second transmission unit is connected with the unit of the photovoltaic air conditioner, and the other end of the second transmission unit is connected with the photovoltaic simulator and is used for transmitting a second power difference value in the unit of the photovoltaic air conditioner to the photovoltaic simulator so as to supply power for the photovoltaic simulator.
The alternating current output by the commercial power supply in the embodiment is stabilized by the variable-frequency voltage device and then output to the photovoltaic simulator or the photovoltaic air conditioning unit. By using the embodiment, the utility voltage can be output to the photovoltaic simulator, so that the utility voltage is converted into the photovoltaic electric energy through the photovoltaic simulator and output to the photovoltaic air conditioner unit, and if the photovoltaic air conditioner unit does not use the electric energy, the rest electric energy can be returned to the photovoltaic simulator through the circuit of the transformer.
Through the embodiment, the photovoltaic simulator can be utilized to simulate and output the photovoltaic voltage, the voltage used by the photovoltaic simulator can be provided by a mains supply, after the mains supply provides alternating current, the variable frequency voltage equipment can be utilized to stabilize the mains voltage, so that stable voltage is provided, the stabilized voltage is output to the photovoltaic simulator, the photovoltaic simulator is used for converting the voltage into the photovoltaic voltage, and the photovoltaic voltage is provided for a photovoltaic air conditioner unit. On the other hand, when the photovoltaic air conditioning unit is debugged, the mains supply power simulation can be provided through the mains supply voltage provided by the mains supply. Therefore, the photovoltaic air conditioner is debugged through the photovoltaic simulator, the debugging efficiency is improved, the debugging period of the photovoltaic air conditioner is shortened, and the problem that the debugging period of the photovoltaic air conditioner is long is solved.
Fig. 2 is a schematic diagram of an alternative power supply system for a photovoltaic air conditioner according to an embodiment of the present invention, and as shown in fig. 2, the system includes a mains power supply 1, a variable frequency power supply device 2, a transformer 3, a photovoltaic simulator 4, and a photovoltaic air conditioner unit 5. Wherein, the parameters of the commercial power supply 1 can be 220V/3N,380V/3N, namely the output voltage of the commercial power supply can be 220V or 380V, in addition, the variable frequency power supply device 2 can stabilize the voltage output by the commercial power supply 1 to obtain stable output voltage; the transformer 3 may convert the voltage value, for example, convert the voltage of 220V to the voltage of 380V, or convert the voltage of 380 to the voltage of 220V, which is determined according to the use voltage of the photovoltaic simulator 4, for example, when the use voltage of the photovoltaic simulator 4 is 380V and the voltage output by the mains supply 1 is 220V, at this time, the first relay KM1 may be closed, convert the voltage to 380V, and output the converted voltage to the photovoltaic simulator 4.
Optionally, the output voltage of the photovoltaic simulator 4 is a direct current voltage, and corresponding direct current is output to the photovoltaic air conditioning unit 5 according to different mains voltage, so as to be used by the photovoltaic air conditioning unit 5. Fig. 3 is a schematic diagram of an interlocking power supply circuit in an alternative control system of a photovoltaic air conditioner according to the present invention, as shown in fig. 3, when the first switch SB1 (corresponding to the first switch described above) is closed, the first relay KM1 (corresponding to the first relay described above) may be energized, and the voltage output from the mains supply may be output to the transformer KM1 through the relay KM1, at this time, the switch SB2 (corresponding to the second switch described above) is opened, the relay KM2 (corresponding to the second relay described above) is opened (i.e., the relay KM2 will not receive power), and the output mains voltage reaches the photovoltaic simulator through the conversion of the transformer. Alternatively, the switch SB3 may be turned on to operate so that the relay KM2 is energized, at this time, the switch SB4 may be turned off to stop operation, the relay KM1 is turned off (i.e., KM1 is not powered at this time), and the output mains voltage may directly reach the photovoltaic simulator KM2 without passing through a transformer.
Fig. 4 is a schematic diagram of an alternative power supply system of a photovoltaic air conditioner according to an embodiment of the present invention, the debugging device may be applied to the above embodiment, for example, the parameter of the mains supply is 380V/3N, no transformation is needed, the ac power output by the mains voltage 1 may be regulated by the variable frequency power supply device 2, and then directly output to the photovoltaic air conditioner unit 5 and the photovoltaic simulator 4, and the operation manner may be the same as that described above. Upon reaching the photovoltaic simulator 4, it can be converted by the photovoltaic simulator 4 into photovoltaic electrical energy, which can be direct current, and output the photovoltaic direct current into the photovoltaic air conditioning unit 5. Fig. 5 is a schematic diagram two of a power supply system of another alternative photovoltaic air conditioner according to an embodiment of the present invention, as shown in fig. 5, for example, the parameter of the mains supply is 380V/3N, no transformation is needed, the mains voltage output by the mains supply 1 is directly output to the photovoltaic simulator 4 or the photovoltaic air conditioner set 5, and no variable frequency power supply device 2 is needed for voltage stabilization. The utility voltage output by the utility power source 1 is ac, and the voltage output by the photovoltaic simulator 4 is dc.
Alternatively, in the power supply system shown in fig. 4 and 5, the variable frequency power supply device 2 may be used to regulate the voltage of the commercial power supply at 380V/3N. In the power supply system shown in fig. 5, the variable frequency power supply device 2 is not used for voltage stabilization, and the alternating current output by the mains supply can be directly output to the photovoltaic air conditioning unit 5 or the photovoltaic simulator 4.
Fig. 6 is a schematic diagram III of an alternative power supply system of a photovoltaic air conditioner according to an embodiment of the present invention, and as shown in fig. 6, the debugging device adopts the variable frequency power supply device 2. The parameters of the mains supply are 220V/3N, transformation is needed, and alternating current output by the mains supply voltage 1 is stabilized through the variable frequency power supply equipment 2, then output to a transformer and then transmitted to the photovoltaic simulator 4. Converted by the photovoltaic simulator 4 into photovoltaic power, which may be direct current, and output the photovoltaic direct current to the photovoltaic air conditioning unit 5.
Fig. 7 is a schematic diagram four of an alternative power supply system of a photovoltaic air conditioner according to the present invention, and the commissioning device does not employ the variable frequency power supply device 2 as shown in fig. 7. The parameters of the mains supply are 220V/3N, transformation is needed, and the alternating current output by the mains voltage 1 is output to a transformer and then transmitted to the photovoltaic simulator 4. Converted by the photovoltaic simulator 4 into photovoltaic power, which may be direct current, and output the photovoltaic direct current to the photovoltaic air conditioning unit 5.
Fig. 8 is a schematic diagram fifth of an alternative power supply system of a photovoltaic air conditioner according to an embodiment of the present invention, as shown in fig. 8, the debugging device is applied to the embodiment shown in fig. 2, after the mains supply 1 outputs the mains voltage, the mains voltage is stabilized by the variable frequency power supply device 2, and then the stabilized voltage is output to the photovoltaic air conditioner unit 5 or the photovoltaic simulator 4, where the photovoltaic simulator can convert the ac output by the mains supply into dc for the photovoltaic air conditioner unit 5, and if the photovoltaic air conditioner unit 5 is not used up, the remaining electric energy can be led back to the photovoltaic simulator to realize consumption, and the surplus generated electricity of the air conditioner is eliminated by using the law of energy conservation, so that the protection of the variable frequency power supply device 2 or the influence of the ac impurity generated by the photovoltaic in the debugging process on the normal electricity quality of the customer is realized. When the variable frequency power supply equipment 2 is used for installation and debugging, the photovoltaic air conditioner has a grid-connected power generation function, but the variable frequency power supply equipment does not have a function of consuming reverse power generation, and the variable frequency power supply equipment 2 can be burnt due to electric quantity accumulation impact. When the utility power is used for installation and debugging, the photovoltaic air conditioner has a grid-connected power generation function, if impure alternating current generated in the debugging process is integrated into a power grid of a customer, abnormal phenomena such as sudden and sudden changes of an electric lamp can occur, the power quality of the customer is seriously influenced, and the utility power voltage can be stabilized through the variable-frequency power supply equipment 2, so that the voltage after the voltage stabilization is output to the photovoltaic simulator 4 and the photovoltaic air conditioner unit 5.
Fig. 9 is a schematic diagram sixth of an alternative power supply system of a photovoltaic air conditioner according to an embodiment of the present invention, as shown in fig. 9, the debugging device is applied to the embodiment shown in fig. 2, and the variable frequency power supply device 2 may not be applied, the mains voltage output by the mains power supply 1 is directly output to the photovoltaic simulator 4 or the photovoltaic air conditioner unit 5, the photovoltaic simulator 4 converts the mains voltage into a photovoltaic direct current and outputs the photovoltaic direct current to the photovoltaic air conditioner unit 5, and if the photovoltaic air conditioner unit 5 is not used up, the remaining electric energy may be led back to the photovoltaic simulator 4. The utility power grid can be effectively avoided, alternating current emitted by the photovoltaic air conditioner is skillfully guided back to the photovoltaic simulator to realize consumption, the photovoltaic air conditioner loop is used for supplying power, the photovoltaic air conditioner is debugged and installed, and the functional integrity and the quality reliability of the photovoltaic air conditioner can be effectively ensured.
Through the embodiment, the installation progress of the solar panel can be not required to be waited, and the abnormal condition of the photovoltaic air conditioner subjected to normal debugging after the solar panel is butted can be rapidly judged to be the problem of the solar panel, so that rapid maintenance is realized, if engineering disputes are caused, the solar panel manufacturer can be told through effective debugging process data, and project delay caused by the engineering disputes is prevented.
Fig. 10 is a flowchart of a power supply method of a photovoltaic air conditioner according to an embodiment of the present invention, as shown in fig. 10, the method includes the steps of:
step S1001, receiving ac power output by a mains supply to perform photovoltaic power generation;
step S1002, obtaining photovoltaic direct current generated by photovoltaic power generation;
step S1003, supplying power to the unit of the photovoltaic air conditioner according to the alternating current and the photovoltaic direct current output by the mains supply, so as to debug the photovoltaic air conditioner.
Through the embodiment, the photovoltaic power generation can be performed by receiving the alternating current output by the mains supply, the photovoltaic direct current generated by the photovoltaic power generation is obtained, and the unit of the photovoltaic air conditioner is powered according to the alternating current and the photovoltaic direct current output by the mains supply so as to debug the photovoltaic air conditioner. In the embodiment, the photovoltaic power generation is performed through the alternating current output by the mains supply, the photovoltaic power generation is direct current, the photovoltaic air conditioner is debugged, the photovoltaic air conditioner can be debugged without waiting for the end of the process of installing the solar panel, the debugging efficiency of the photovoltaic air conditioner is improved, and the debugging time is shortened.
Optionally, before receiving the alternating current output by the mains supply for photovoltaic power generation, the method further comprises: performing voltage stabilization treatment on alternating current output by a mains supply to obtain alternating current with voltage stabilized in a preset voltage range; receiving alternating current output by a mains supply for photovoltaic power generation comprises: and receiving alternating current with the voltage stabilized in a preset voltage range to perform photovoltaic power generation.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is illustrated in the flowcharts, in some cases the steps illustrated or described may be performed in an order other than that illustrated herein.
The power supply system of the photovoltaic air conditioner provided by the embodiment of the invention comprises a processor and a memory. The processor includes a kernel, and the kernel fetches the corresponding program unit from the memory. The kernel can be provided with one or more than one, the debugging efficiency of the photovoltaic air conditioner is improved by adjusting the kernel parameters, and the debugging time is shortened.
The memory may include volatile memory, random Access Memory (RAM), and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), among other forms in computer readable media, the memory including at least one memory chip.
The embodiment of the invention provides a storage medium, on which a program is stored, which when executed by a processor, implements the power supply method of the photovoltaic air conditioner.
The embodiment of the invention provides a processor which is used for running a program, wherein the program runs to execute a power supply method of a photovoltaic air conditioner.
The embodiment of the invention provides equipment, which comprises a processor, a memory and a program stored in the memory and capable of running on the processor, wherein the processor realizes the following steps when executing the program: receiving alternating current output by a mains supply to perform photovoltaic power generation; obtaining photovoltaic direct current generated by photovoltaic power generation; and supplying power to a unit of the photovoltaic air conditioner according to the alternating current and the photovoltaic direct current output by the mains supply so as to debug the photovoltaic air conditioner.
Before receiving the alternating current output by the mains supply for photovoltaic power generation, the method further comprises: performing voltage stabilization treatment on alternating current output by a mains supply to obtain alternating current with voltage stabilized in a preset voltage range; receiving alternating current output by a mains supply for photovoltaic power generation comprises: and receiving alternating current with the voltage stabilized in a preset voltage range to perform photovoltaic power generation. The device herein may be a server, PC, PAD, cell phone, etc.
The invention also provides a computer program product adapted to perform, when executed on a data processing device, a program initialized with the method steps of: receiving alternating current output by a mains supply to perform photovoltaic power generation; obtaining photovoltaic direct current generated by photovoltaic power generation; and supplying power to a unit of the photovoltaic air conditioner according to the alternating current and the photovoltaic direct current output by the mains supply so as to debug the photovoltaic air conditioner.
Before receiving the alternating current output by the mains supply for photovoltaic power generation, the method further comprises: performing voltage stabilization treatment on alternating current output by a mains supply to obtain alternating current with voltage stabilized in a preset voltage range; receiving alternating current output by a mains supply for photovoltaic power generation comprises: and receiving alternating current with the voltage stabilized in a preset voltage range to perform photovoltaic power generation.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, etc., such as Read Only Memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.
Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The foregoing is merely exemplary of the present invention and is not intended to limit the present invention. Various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are to be included in the scope of the claims of the present invention.
Claims (9)
1. A photovoltaic air conditioner power supply system, comprising:
a mains supply for outputting alternating current;
the photovoltaic simulator is connected with the mains supply and is used for carrying out photovoltaic power generation according to the alternating current output by the mains supply and outputting photovoltaic direct current;
the photovoltaic air conditioner is respectively connected with the photovoltaic simulator and the mains supply, and photovoltaic direct current output by the photovoltaic simulator and alternating current output by the mains supply power for a unit of the photovoltaic air conditioner so as to debug the photovoltaic air conditioner;
the system further comprises: the first judging unit is arranged in the unit of the photovoltaic air conditioner and is used for judging whether the power of the photovoltaic direct current output by the photovoltaic simulator is larger than the rated power of the unit of the photovoltaic air conditioner under the condition that the photovoltaic simulator outputs the photovoltaic direct current according to the alternating current output by the mains supply; the first calculation unit is arranged in the unit of the photovoltaic air conditioner and is used for calculating a first power difference value under the condition that the power of the photovoltaic direct current output by the photovoltaic simulator is larger than the rated power of the unit of the photovoltaic air conditioner, wherein the first power difference value is a difference value between the power of the photovoltaic direct current output by the photovoltaic simulator and the rated power of the unit of the photovoltaic air conditioner; and one end of the first transmission unit is connected with the unit of the photovoltaic air conditioner, and the other end of the first transmission unit is connected with the photovoltaic simulator and is used for transmitting a first power difference value in the unit of the photovoltaic air conditioner to the photovoltaic simulator so as to supply power for the photovoltaic simulator.
2. The system of claim 1, wherein the system further comprises:
and the variable frequency power supply equipment is connected with the mains supply and is used for stabilizing the voltage of the alternating current output by the mains supply so as to stabilize the voltage of the alternating current output by the variable frequency power supply equipment within a preset voltage range.
3. The system of claim 2, wherein the system further comprises:
and the transformer is connected with the mains supply and is used for converting alternating current output by the mains supply into target voltage and transmitting the target voltage to the photovoltaic simulator to supply power for the photovoltaic simulator.
4. The system of claim 3, wherein the transformer is further configured to be coupled to the variable frequency power device, to convert the ac power output by the variable frequency power device to a target voltage, and to transmit the target voltage to the photovoltaic simulator, to power the photovoltaic simulator.
5. The system of claim 4, wherein the system further comprises:
the first relay is used for being electrically closed when the first switch is closed, one end of the transformer is communicated with the photovoltaic simulator, and the other end of the transformer is communicated with the mains supply or the variable-frequency power supply equipment under the condition that the first relay is electrically closed.
6. The system of claim 2, wherein the system further comprises:
and the second relay is used for being electrically closed when the second switch is closed, and the photovoltaic simulator is communicated with the mains supply or the variable-frequency power supply equipment under the condition that the second relay is electrically closed.
7. The system of claim 2, wherein the system further comprises:
the second judging unit is arranged in the unit of the photovoltaic air conditioner and is used for judging whether the power of the photovoltaic direct current output by the photovoltaic simulator is larger than the rated power of the unit of the photovoltaic air conditioner under the condition that the photovoltaic simulator generates the photovoltaic power according to the power output by the variable-frequency power supply equipment and outputs the photovoltaic direct current;
the second calculation unit is arranged in the unit of the photovoltaic air conditioner and is used for calculating a second power difference value under the condition that the power of the photovoltaic direct current output by the photovoltaic simulator is larger than the rated power of the unit of the photovoltaic air conditioner, wherein the second power difference value is a difference value between the power of the photovoltaic direct current output by the photovoltaic simulator and the rated power of the unit of the photovoltaic air conditioner;
and one end of the second transmission unit is connected with the unit of the photovoltaic air conditioner, and the other end of the second transmission unit is connected with the photovoltaic simulator and is used for transmitting a second power difference value in the unit of the photovoltaic air conditioner to the photovoltaic simulator so as to supply power for the photovoltaic simulator.
8. A method for supplying power to a photovoltaic air conditioner, comprising:
receiving alternating current output by a mains supply to perform photovoltaic power generation;
obtaining photovoltaic direct current generated by photovoltaic power generation;
supplying power to a unit of the photovoltaic air conditioner according to the alternating current output by the mains supply and the photovoltaic direct current so as to debug the photovoltaic air conditioner;
the method further comprises the steps of: under the condition that the photovoltaic simulator performs photovoltaic power generation according to the alternating current output by the mains supply and outputs photovoltaic direct current, judging whether the power of the photovoltaic direct current output by the photovoltaic simulator is larger than the rated power of a unit of the photovoltaic air conditioner; calculating a first power difference value under the condition that the power of the photovoltaic direct current output by the photovoltaic simulator is larger than the rated power of the unit of the photovoltaic air conditioner, wherein the first power difference value is a difference value between the power of the photovoltaic direct current output by the photovoltaic simulator and the rated power of the unit of the photovoltaic air conditioner; and transmitting the first power difference value in the unit of the photovoltaic air conditioner to the photovoltaic simulator to supply power for the photovoltaic simulator.
9. The method of claim 8, wherein the step of determining the position of the first electrode is performed,
before receiving the alternating current output by the mains supply for photovoltaic power generation, the method further comprises: performing voltage stabilization treatment on the alternating current output by the mains supply to obtain alternating current with voltage stabilized in a preset voltage range; receiving alternating current output by a mains supply for photovoltaic power generation comprises: and receiving the alternating current with the voltage stabilized in a preset voltage range to perform photovoltaic power generation.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201251264A (en) * | 2011-06-08 | 2012-12-16 | Nat Univ Chung Cheng | Device of bi-directional inverter and direct current power system thereof |
| CN206908374U (en) * | 2017-07-19 | 2018-01-19 | 珠海格力电器股份有限公司 | PV air-conditioner electric power system |
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| JP2013017262A (en) * | 2011-06-30 | 2013-01-24 | Sanyo Electric Co Ltd | Inverter and power conversion device mounted with the same |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201251264A (en) * | 2011-06-08 | 2012-12-16 | Nat Univ Chung Cheng | Device of bi-directional inverter and direct current power system thereof |
| CN206908374U (en) * | 2017-07-19 | 2018-01-19 | 珠海格力电器股份有限公司 | PV air-conditioner electric power system |
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