WO2021129808A1 - 太阳能供电系统、太阳能供电系统的控制方法、控制装置、电子装置及计算机可读存储介质 - Google Patents

太阳能供电系统、太阳能供电系统的控制方法、控制装置、电子装置及计算机可读存储介质 Download PDF

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WO2021129808A1
WO2021129808A1 PCT/CN2020/139428 CN2020139428W WO2021129808A1 WO 2021129808 A1 WO2021129808 A1 WO 2021129808A1 CN 2020139428 W CN2020139428 W CN 2020139428W WO 2021129808 A1 WO2021129808 A1 WO 2021129808A1
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Prior art keywords
output
power supply
input
input terminal
unit
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PCT/CN2020/139428
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English (en)
French (fr)
Inventor
曹捷
杨瑞建
曹前
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中兴通讯股份有限公司
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Publication of WO2021129808A1 publication Critical patent/WO2021129808A1/zh

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/66—Regulating electric power
    • G05F1/67—Regulating electric power to the maximum power available from a generator, e.g. from solar cell
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/30—Electrical components
    • 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

Definitions

  • the embodiments of the present invention relate to the field of photovoltaics, and in particular, to a solar power supply system, a control method of a solar power supply system, a control device, an electronic device, and a computer-readable storage medium.
  • each group of solar modules in the solar system corresponds to a power unit (PU) device.
  • PU power unit
  • each PU device separately performs Maximum Power Point Tracking (Maximum Point Tracking) for the group of solar modules. Power Point Tracking, MPPT) control.
  • the layout of cables and the setting of related devices need to be performed according to actual engineering needs, for example, the connection line between the PU device and the corresponding photovoltaic (photovoltaic, PV) module Cables, and DC lightning protection modules or devices to prevent the PU device from being struck by lightning.
  • the PU device needs to be set one by one for each PU device during the above-mentioned cable layout and related device setting process, resulting in the overall wiring and the number of device settings in the solar power supply system. Too much, so that the cost and construction complexity are difficult to control.
  • the embodiment of the present invention provides a solar power supply system, a control method of the solar power supply system, a control device, an electronic device, and a computer-readable storage medium, so as to solve one of the related technical problems at least to a certain extent, including the requirements of the PU device
  • the set of devices and wiring are too complicated.
  • a solar power supply system including: a photovoltaic PV module and a DC bus; wherein, the PV module is correspondingly provided with a PU device, and the PU device includes: a PU input terminal configured to The PV assembly is connected; the PU output terminal is set to be connected to the DC bus; the DC chopping DC/DC unit is set between the negative pole of the PU input terminal and the negative pole of the PU output terminal, and the DC The /DC unit is configured to achieve voltage transformation between the PU input terminal and the PU output terminal.
  • a control method of a solar power supply system which is applied to the solar power supply system described in the above-mentioned embodiment; Voltage transformation is implemented between the PU input terminal and the PU output terminal to perform MPPT control of the maximum power point tracking of the solar power supply system.
  • a control device of a solar power supply system which is applied to the solar power supply system described in the above-mentioned embodiment; Voltage transformation is realized between the PU input terminal and the PU output terminal of the PU device to perform MPPT control of the maximum power point tracking of the solar power supply system.
  • an electronic device including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute any of the foregoing. Steps in a method embodiment.
  • a computer-readable storage medium storing a computer program, wherein the computer program is configured to execute the steps in any one of the foregoing method embodiments.
  • Fig. 1 is a system diagram (1) of a solar power supply system according to an embodiment of the present invention
  • Figure 2 is an internal schematic diagram of a related PU device
  • FIG. 3 is a system schematic diagram of a related solar power supply system
  • Fig. 4 is an internal schematic diagram of a PU device according to an embodiment of the present invention.
  • Figure 5 is a system schematic diagram (2) of a solar power supply system according to an embodiment of the present invention.
  • Fig. 6 is a system schematic diagram of a solar power supply system according to an embodiment of the present invention (3);
  • Fig. 7 is a schematic circuit diagram of a DC/DC unit according to an embodiment of the present invention.
  • Fig. 8 is a schematic circuit diagram (1) of a solar power supply system according to an embodiment of the present invention.
  • Fig. 9 is a schematic circuit diagram (2) of a solar power supply system according to an embodiment of the present invention.
  • Fig. 10 is a flowchart of a method for controlling a solar power supply system according to an embodiment of the present invention.
  • Fig. 11 is a structural block diagram of a control device of a solar power supply system according to an embodiment of the present invention.
  • Fig. 12 is a structural block diagram of an electronic device according to an embodiment of the present invention.
  • FIG. 1 is a system diagram (1) of a solar power supply system according to an embodiment of the present invention.
  • the solar power supply system in this embodiment includes: photovoltaic PV modules 102 and the DC bus 104; wherein, the PV assembly 102 is correspondingly provided with a PU device 106, and the PU device 106 includes:
  • the PU input terminal 1062 is set to be connected to the PV module 102;
  • the PU output terminal 1064 is set to be connected to the DC bus 104;
  • the DC chopped DC/DC unit 1066 is arranged between the negative electrode of the PU input terminal 1062 and the negative electrode of the PU output terminal 1064.
  • the DC/DC unit 1066 is configured to achieve voltage transformation between the PU input terminal 1062 and the PU output terminal 1064.
  • PV modules are correspondingly provided with PU devices, which means that each PV module is correspondingly provided with a PU device, but the correspondence between PV modules and PU devices can be realized through cable connection, or It is not connected by cables, that is, it is sufficient to ensure that the number of PV components corresponds to the number of PU devices, which is not limited in the present invention.
  • the PU input terminal includes the positive and negative terminals of the input terminal.
  • the PU output terminal includes the positive and negative terminals of the output terminal, the positive terminal of the PU input terminal is connected with the positive terminal of the PU output terminal, and the negative terminal of the PU input terminal is connected with the negative terminal of the PU output terminal.
  • the DC bus in the above embodiment is usually connected with a load.
  • the solar power supply system in the above embodiment since in the solar power supply system including photovoltaic PV modules and DC bus, the PV module is correspondingly provided with a PU device, and the PU device is provided in the PV module connected to the PV module.
  • the DC/DC unit between the negative pole of the PU input terminal and the negative pole of the PU output terminal connected to the DC bus can realize voltage transformation between the PU input terminal and the PU output terminal. Therefore, the solar power supply system in this embodiment can solve the problem that the components and wiring required by the PU device are too complicated in some situations, so as to reduce the number of components and lines in the PU device installation, thereby reducing costs and construction complexity. effect.
  • FIG 2 is an internal schematic diagram of the related PU device.
  • the DC/DC unit in the PU device in the related solar power supply system is often set between the positive pole of the PU input terminal and the positive pole of the PU output terminal;
  • the DC/DC unit of the PU device is arranged between the positive pole of the PU input terminal and the positive pole of the PU output terminal, the negative pole of the PU input terminal and the negative pole of the PU output terminal in the PU device cannot be controlled independently.
  • each PU device can only be connected to the corresponding PV module alone (for example, if multiple PU devices are connected to multiple PV modules, it is very easy for current to flow back from the negative side of a certain PU device, which may cause damage to the device) , And corresponding DC lightning protection devices are respectively arranged on the positive and negative poles of the PU input end of the PU device.
  • Figure 3 is a system schematic diagram of a related solar power supply system, and the related solar power supply system is shown in Figure 3.
  • the solar power supply system in this embodiment arranges the DC/DC unit between the negative pole of the PU input terminal and the negative pole of the PU output terminal so that the negative pole of the PU input terminal of each PU device is connected to the PU.
  • Independent loop control can be performed between the negative poles of the output end, so that no matter how the PU device is connected to the PV device, the overcurrent phenomenon can be avoided between the negative pole of the PU input end of the PU device and the negative pole of the PU output end.
  • the internal structure of the above PU device can also enable a single DC protection device to be provided between the positive electrode and the negative electrode of the PU input terminal to realize the function of multiple DC protection devices in some situations.
  • the PU device 106 further includes:
  • the input current detection unit 1068 is configured to detect the input current of the PU input terminal 1062, and the input current detection unit 1068 is arranged between the negative electrode of the PU input terminal 1062 and the DC/DC unit 1066;
  • the output current detection unit 1070 is configured to detect the output current of the PU output terminal 1064, and the output current detection unit 1070 is arranged between the negative electrode of the PU output terminal 1064 and the DC/DC unit 1066.
  • FIG. 4 is an internal schematic diagram of a PU device according to an embodiment of the present invention.
  • the structure of the input current detection unit and the output current detection unit are as shown in FIG. 4.
  • the above-mentioned input current electrical measurement unit and output current detection unit can respectively detect the input current of the PU input terminal and the output current of the PU output terminal in the PU device, so that the DC/DC unit can perform voltage transformation processing according to the corresponding detection result.
  • the input circuit detection unit and the output circuit detection unit in the above embodiments can cooperate with the operation of the DC/DC unit provided between the negative pole of the PU input terminal and the negative pole of the PU output terminal to further improve the loop control in the PU device, and to MPPT control of PV modules.
  • the input current detection unit is composed of a first detection resistor
  • the output current detection unit is composed of a second electrical detection resistor.
  • the above-mentioned solar power supply system further includes a PV module assembly 108, wherein the PV module assembly 108 includes a plurality of PV modules 102; each PV module 102 in the PV module assembly 108 is correspondingly provided with a PU device 106.
  • the PV module set indicates the set of multiple PV modules, and the set does not refer to a certain entity, specifically refers to the general term of multiple PV modules in the solar power supply system; PV modules Multiple PV modules in the set can be connected to each other according to a preset connection mode.
  • the PV module assembly 108 includes a collective output terminal 1082
  • the PV assembly 102 includes a PV output terminal 1022; wherein, the positive poles of the PV output terminals 1022 of a plurality of PV modules are connected to the positive poles of the collective output terminal 1082, and a plurality of The negative pole of the PV output terminal 1022 of the PV module is tandemly connected to the negative pole of the collective output terminal 1082;
  • the positive electrode of the collective output terminal 1082 is connected to the DC bus 104, and the negative electrode of the collective output terminal 1082 is respectively connected to the negative electrode of the PU input terminal 1062 of the multiple PU devices.
  • the above-mentioned PV output terminal indicates the output terminal corresponding to the PV module, and the PV output terminal also includes the positive electrode and the negative electrode; the collective output terminal indicates the independent output terminal corresponding to the PV module assembly composed of multiple PV modules.
  • the collective output terminal is unique, and the collective output terminal also includes a positive electrode and a negative electrode.
  • the connection method used between multiple PV modules is parallel connection. Specifically, the positive poles of the PV output terminals of the multiple PV modules are connected to the positive poles of the collective output terminal, which specifically indicates that the positive poles of the multiple PV output terminals are unified Connect to the positive terminal of the collective output terminal.
  • the positive terminals of multiple PV output terminals can be connected to the positive terminal of the collective output terminal respectively, or the positive terminals of multiple PV output terminals can be connected in sequence, and then the connected lines are connected to the positive terminal of the collective output terminal.
  • the present invention does not limit this.
  • the negative poles of the PV output terminals of multiple PV modules are connected to the negative pole of the collective output terminal, which specifically indicates that the negative poles of the multiple PV output terminals are connected to the negative pole of the collective output terminal.
  • the negative poles of the multiple PV output terminals are respectively connected to the collective output terminal.
  • the negative pole of the output terminal may also be that the negative poles of multiple PV output terminals are first connected in sequence, and then the connected line is connected to the negative pole of the collective output terminal, which is not limited by the present invention.
  • the above-mentioned DC bus may include a positive wire and a negative wire.
  • the positive terminal of the collective output terminal is connected to the positive wire of the DC bus; the negative wire of the DC bus can be grounded, and the DC bus can also be connected to the load.
  • the negative poles of the aforementioned collective output terminals are respectively connected to the negative poles of the PU input terminals of the multiple PU devices, that is, the collective output terminal is indicated to be respectively connected to the negative poles of the PU input terminals of each PU device.
  • FIG. 5 is a system schematic diagram (2) of a solar power supply system according to an embodiment of the present invention. In the solar power supply system in the above embodiment, the connection relationship between components is shown in FIG. 5.
  • the cable layout between the PV module and the PU module is more
  • the one-to-one connection cable layout between PV modules and PU modules not only significantly reduces the number but also reduces the cost; moreover, multiple PV modules can be connected on the side of the PV module during the construction process.
  • Cable connection that is, the PV output ends of multiple PV modules are connected to the collective output end of the PV assembly assembly, and the cables are distributed on the side of the multiple PU devices at the same time, that is, the collective output ends are connected to multiple PU devices respectively ⁇ PU input terminal connection;
  • the above construction method can make the cable layout can be wired on the side of multiple PV modules and multiple PU devices respectively, so that the complexity of construction is significantly reduced.
  • connection between the above-mentioned multiple PV components and the PU device is established on the internal structure of the PU device in this embodiment, that is, in the PU device, the DC/DC unit is set at the negative pole of the PU input terminal and the PU output Between the negative pole of the terminal.
  • the above arrangement of the DC/DC unit between the negative pole of the PU input terminal and the negative pole of the PU output terminal enables the negative pole of each PU module to independently perform loop control, thereby avoiding the current from being connected to multiple PU devices.
  • any PU device can be connected to the above-mentioned PV module through the above-mentioned collective output end; therefore, When designing the system reliability, only the PU device needs to be backed up (N+1 backup), and there is no need to back up the PV components. Compared with some situations where the PV module and the PU device need to be backed up at the same time, the above-mentioned embodiment can reduce the backup cost in system operation.
  • a first protection unit 110 is provided between the positive electrode of the collective input terminal and the negative electrode of the collective input terminal;
  • the first protection unit 110 includes a first protection resistor arranged between the positive electrode of the collective input terminal and the negative electrode of the collective input terminal.
  • the multiple PV modules and the multiple PU devices are connected through the collective output end of the PV assembly assembly, and the multiple PU devices are connected in parallel with the collective output end, respectively.
  • a protection unit is set between the positive pole of the collective output end and the negative pole of the collective input end to achieve DC lightning protection for multiple PU devices.
  • the above embodiment obviously reduces the number of protection units, that is, the number of first protection resistors, thereby significantly reducing the device cost in the process of setting the PU device.
  • the above-mentioned first protection resistor may be a varistor.
  • the above-mentioned solar power supply system further includes:
  • the control unit is configured to instruct one or more of the multiple PU devices to sleep according to the load current connected to the DC bus.
  • control unit in the above embodiment may be the control unit of the PU device, or the overall control unit of the solar power supply system, such as a CPU or a microcomputer, etc., which is not limited in the present invention.
  • the control unit in the above embodiment when the load current connected to the DC bus is low, one or several corresponding PU devices can drive the load to work. For example, the output current of a PU device is 50A, and the actual load is The required current is 30A, then one PU device can drive the load.
  • the output current of each PU device is 30/N(N Is the number of PU devices), which in turn causes the output current of each PU device to be small. Since the conversion efficiency of the PU device is different at different load points, and the conversion efficiency of the PU device is higher than other load points in the partial load interval, therefore; adopting the sleep control of the PU device in the above embodiment, That is, the output current of the PU device can be controlled, so that the PU device has a better conversion efficiency in the working state.
  • each PU input terminal is also provided with a first PU input switch 112.
  • the PV module includes a PV output terminal; wherein, the PV output terminal of each PV module is respectively connected to the PU input terminal of the PU device corresponding to the PV module.
  • Fig. 6 is a system schematic diagram (3) of a solar power supply system according to an embodiment of the present invention. The structure of the solar power supply system in the above embodiment can be referred to Fig. 6.
  • a second protection unit 114 is provided between the positive pole of the PU input terminal and the negative pole of the PU input terminal of each PU device;
  • the second protection unit includes a second protection resistor arranged between the positive pole of the PU input terminal and the negative pole of the PU input terminal.
  • the DC lightning protection module of the PU device needs to be set for the positive and negative poles.
  • the negative poles are respectively provided with a grounding protection resistor.
  • the PU input terminal corresponding to each PU device is provided with a second protection unit, and the second protection unit is a second protection resistor.
  • the setting of the above embodiment is based on the structure setting of the solar power supply system in this embodiment; specifically, in the PU device in this embodiment, the DC/DC unit in the PU device is set at the negative pole of the PU input terminal and Between the negative poles of the PU output end, therefore, DC lightning protection can be achieved by setting a protection resistor between the positive pole and the negative pole of the PU input end.
  • the number of protection resistors is set to 1/2 of the number of protection resistors in some cases, so the device cost in the process of setting the PU device can also be significantly reduced.
  • the above-mentioned second protection resistor may also be a varistor.
  • each PU input terminal is further provided with a second PU input switch 116, and the negative pole of each PU input terminal is also provided with a third PU input switch 118.
  • the DC/DC unit 106 includes: a first MOS tube, a second MOS tube, a third MOS tube, and a fourth MOS tube;
  • the first MOS tube and the second MOS tube are arranged between the negative electrode of the PU input terminal and the negative electrode of the PU output terminal, the third MOS tube is arranged between the first MOS tube and the positive electrode of the PU output terminal, and the fourth MOS tube is arranged on the first MOS tube. Between the two MOS tube and the positive pole of the PU output terminal;
  • a first inductor is also arranged between the first MOS tube and the negative electrode of the PU output terminal, and a second inductor is also arranged between the second MOS tube and the negative electrode of the PU output terminal.
  • FIG. 7 is a schematic circuit diagram of a DC/DC unit according to an embodiment of the present invention, and the internal circuit structure of the above-mentioned DC/DC unit is shown in FIG. 7.
  • FIG. 8 is a diagram of the solar power supply system according to an embodiment of the present invention. Circuit diagram (1), Fig. 8 corresponds to the solar power supply system in Fig. 5 above, that is, the layout mode where multiple PV modules are assembled.
  • FIG. 9 is a schematic circuit diagram (2) of a solar power supply system according to an embodiment of the present invention.
  • FIG. 9 corresponds to the solar power supply system in FIG. 6 described above, that is, the layout of the PV module and the PU device in a one-to-one correspondence. It should be further explained that the circuit structures of the internal DC/DC unit of the PU device in FIGS. 8 and 9 are shown in FIG. 7.
  • FIG. 10 is a flowchart of a method for controlling a solar power supply system according to an embodiment of the invention, as shown in FIG. As shown in 10, the control method of the solar power supply system includes:
  • the above-mentioned solar control system includes: an input current detection unit and an output current detection unit; the above step S202 further includes:
  • the switch unit implements voltage transformation between the PU input terminal and the PU output terminal of the PU device according to the first detection information and the second detection signal, so as to perform MPPT control of the maximum power point tracking of the solar power supply system.
  • the above-mentioned first detection information is the detection result of the input current of the input terminal of the PU in the PU device by the input current detection unit
  • the above-mentioned second detection information is the detection of the output current of the output terminal of the PU in the PU device by the output current detection unit. result.
  • the DC/DC unit can perform voltage transformation processing to further improve the loop control in the PU device and the MPPT control of the PV module.
  • the input current detection unit is composed of a first detection resistor
  • the output current detection unit is composed of a second electrical detection resistor.
  • the above method further includes:
  • one or more of the multiple PU devices are instructed to go to sleep.
  • the output current of one PU device is 50A.
  • the actual current required by the load is 30A, then one PU device can drive the load.
  • the output current of each PU device is 30/ N (N is the number of PU devices), which in turn causes the output current of each PU device to be small.
  • the conversion efficiency of the PU device is different at different load points, and the conversion efficiency of the PU device is higher than other load points in the partial load interval, therefore; adopting the sleep control of the PU device in the above embodiment, That is, the output current of the PU device can be controlled, so that the PU device has a better conversion efficiency in the working state.
  • a control device for a solar power supply system is also provided, which is applied to the solar power supply system described in Embodiment 1.
  • the device is configured to implement the above-mentioned embodiments and implementations, which have already been explained. No longer.
  • the term "module" can implement a combination of software and/or hardware with predetermined functions.
  • the devices described in the following embodiments are preferably implemented by software, implementation by hardware or a combination of software and hardware is also possible and conceived.
  • Fig. 11 is a structural block diagram of a control device of a solar power supply system according to an embodiment of the present invention. As shown in Fig. 11, the device includes:
  • the control module 301 is configured to achieve voltage transformation between the PU input terminal and the PU output terminal of the PU device through the switch unit, so as to perform the MPPT control of the maximum power point tracking of the solar power supply system.
  • the above-mentioned solar control system includes: an input current detection unit and an output current detection unit; the above-mentioned device further includes:
  • the switch unit implements voltage transformation between the PU input terminal and the PU output terminal of the PU device according to the first detection information and the second detection signal, so as to perform MPPT control of the maximum power point tracking of the solar power supply system.
  • the above device further includes:
  • one or more of the multiple PU devices are instructed to go to sleep.
  • each of the above modules can be implemented by software or hardware.
  • it can be implemented in the following manner, but not limited to this: the above modules are all located in the same processor; or, the above modules can be combined in any combination.
  • the forms are located in different processors.
  • An embodiment of the present invention also provides an electronic device, as shown in FIG. 12, including a memory 401 and a processor 402, the memory 401 stores a computer program, and the processor 402 is configured to run the computer program to execute any of the foregoing. Steps in a method embodiment.
  • the above-mentioned electronic device may further include a transmission device and an input-output device, wherein the transmission device is connected to the aforementioned processor 402, and the input-output device is connected to the aforementioned processor 402.
  • the aforementioned processor 402 may be configured to execute the following steps through a computer program:
  • a switch unit is used to realize voltage transformation between the PU input terminal and the PU output terminal of the PU device, so as to perform MPPT control of the maximum power point tracking of the solar power supply system.
  • the embodiment of the present invention also provides a computer-readable storage medium storing a computer program, wherein the computer program is configured to execute the steps in any one of the foregoing method embodiments.
  • the PV module is correspondingly provided with a PU device, and the PU device is provided on the PU connected to the PV module.
  • the DC/DC unit between the negative pole of the input terminal and the negative pole of the PU output terminal connected to the DC bus can realize voltage transformation between the PU input terminal and the PU output terminal. Therefore, the embodiments of the present invention can solve the problem of excessively complex components and wiring required by the PU device in some situations, so as to reduce the number of components and circuits in the PU device installation, thereby reducing the cost and construction complexity.
  • modules or steps of the above-mentioned embodiments of the present invention can be implemented by a general computing device, and they can be concentrated on a single computing device or distributed among multiple computing devices.
  • they can be implemented with program codes executable by a computing device, so that they can be stored in a storage device for execution by the computing device, and in some cases, can be different from
  • the steps shown or described are executed in order, or they are respectively fabricated into individual integrated circuit modules, or multiple modules or steps of them are fabricated into a single integrated circuit module for implementation. In this way, the present invention is not limited to any specific combination of hardware and software.

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Abstract

一种太阳能供电系统、太阳能供电系统的控制方法、控制装置、电子装置及计算机可读存储介质。太阳能供电系统包括光伏PV组件(102)以及直流母线(104)；PV组件(102)对应设置有PU装置(106)，PU装置(106)包括：PU输入端(1062)，设置为与PV组件(102)相连接；PU输出端(1064)，设置为与直流母线(104)相连接；直流斩波DC/DC单元(1066)，设置在PU输入端(1062)的负极与PU输出端(1064)的负极之间，DC/DC单元(1066)配置为在PU输入端(1062)与PU输出端(1064)之间实现变压。

Description

太阳能供电系统、太阳能供电系统的控制方法、控制装置、电子装置及计算机可读存储介质
相关申请的交叉引用
本申请基于申请号为201911358901.7、申请日为2019年12月25日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本发明实施例涉及光伏领域，具体而言，涉及一种太阳能供电系统、太阳能供电系统的控制方法、控制装置、电子装置及计算机可读存储介质。
背景技术
随着信息技术的发展，4G通讯被全面推广和使用，同时又将迎来5G通讯的试用和商用。为偏远地区的移动通信基站提供稳定可靠的供电系统是提高移动通信网络覆盖率的重要因素之一。目前，将绿色可再生能源，如太阳能等应用于上述偏远基站的供电是较为成功的方式。
随着太阳能发电技术的日益成熟，太阳能发电在能源体系中的地位越发重要，受到广泛重视并得到了长足的发展。为了保障偏远地区通讯设备的供电可靠，很多电源设备厂家都推出了纯光、光油混合、光电混合、风光混合、风光油电混合等基于太阳能供电的产品，上述产品均需采用太能能供电系统。在一些情形中，太阳能系统中的每组太阳能组件对应一个电源单元(Power Unit，PU)装置，为保持太阳能组件的输出功率，每个PU装置单独对该组太阳能组件进行最大功率点追踪(Maximum Power Point Tracking，MPPT)控制。
在一些情形中，上述PU装置在功能实现过程中，需根据实际工程需要进行线缆的布局以及相关器件的设置，例如，PU装置与对应的太阳能光伏(photovoltaic，PV)组件之间的连接线缆，以及为避免PU装置遭遇雷击的直流防雷模块或器件等。但是，在一些情形中，PU装置在进行上述线缆的布局以及相关器件的设置的过程中，需针对每一个PU装置进行一一设置，从而造成太阳能供电系统中整体的布线以及器件设置的数量过多，以导致成本以及施工复杂度难以控制。
针对上述技术中，PU装置所需设置的器件以及布线过于复杂的问题，目前一些技术中尚未提供有效的解决方案。
发明内容
本发明实施例提供了一种太阳能供电系统、太阳能供电系统的控制方法、控制装置、电子装置及计算机可读存储介质，以至少在一定程度上解决相关的技术问题之一，包括PU装置所需设置的器件以及布线过于复杂的问题。
根据本发明的一个实施例，提供了一种太阳能供电系统，包括：光伏PV组件以及直流母线；其中，所述PV组件对应设置有PU装置，所述PU装置包括：PU输入端，设置为与所述PV组件相连接；PU输出端，设置为与所述直流母线相连接；直流斩波DC/DC单元，设置在所述PU输入端的负极与所述PU输出端的负极之间，所述DC/DC单元配置为在所述PU输入端与所述PU输出端之间实现变压。
根据本发明的另一个实施例，还提供了一种太阳能供电系统的控制方法，应用于上述实施例中所述的太阳能供电系统；包括：通过所述DC/DC单元在所述PU装置的所述PU输入端与所述PU输出端之间实现变压，以对所述太阳能供电系统进行最大功率点跟踪MPPT控制。
根据本发明的另一个实施例，还提供了一种太阳能供电系统的控制装置，应用于上述实施例中所述的太阳能供电系统；包括：控制模块，配置为通过所述DC/DC单元在所述PU装置的所述PU输入端与所述PU输出端之间实现变压，以对所述太阳能供电系统进行最大功率点跟踪MPPT控制。
根据本发明的另一个实施例，还提供了一种电子装置，包括存储器和处理器，其中，所述存储器中存储有计算机程序，所述处理器被设置为运行所述计算机程序以执行上述任一项方法实施例中的步骤。
根据本发明的另一个实施例，还提供了一种计算机可读存储介质，存储有计算机程序，其中，所述计算机程序被设置为执行上述任一项方法实施例中的步骤。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本发明的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是根据本发明实施例提供的太阳能供电系统的系统示意图(一)；
图2是根据相关的PU装置的内部示意图；
图3是根据相关的太阳能供电系统的系统示意图；
图4是根据本发明实施例提供的PU装置的内部示意图；
图5是根据本发明实施例提供的太阳能供电系统的系统示意图(二)；
图6是根据本发明实施例提供的太阳能供电系统的系统示意图(三)；
图7是根据本发明实施例提供的DC/DC单元的电路示意图；
图8是根据本发明实施例提供的太阳能供电系统的电路示意图(一)；
图9是根据本发明实施例提供的太阳能供电系统的电路示意图(二)；
图10是根据本发明实施例提供的太阳能供电系统的控制方法的流程图；
图11是根据本发明实施例提供的太阳能供电系统的控制装置的结构框图；
图12是根据本发明实施例提供的电子装置的结构框图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本发明中的实施例及实施例中的特征可以相互组合。
需要说明的是，本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
实施例1
本实施例提供了一种太阳能供电系统，图1是根据本发明实施例提供的太阳能供电系统的系统示意图(一)，如图1所示，本实施例中的太阳能供电系统包括：光伏PV组件102以及直流母线104；其中，PV组件102对应设置有PU装置106，PU装置106包括：
PU输入端1062，设置为与PV组件102相连接；
PU输出端1064，设置为与直流母线104相连接；
直流斩波DC/DC单元1066，设置在PU输入端1062的负极与PU输出端1064的负极之间，DC/DC单元1066配置为在PU输入端1062与PU输出端1064之间实现变压。
需要进一步说明的是，上述PV组件对应设置有PU装置，即指示每一个PV组件均对应设置有一个PU装置，但PV组件与PU装置之间的对应关系可以通过线缆连接得以实现，也可以不通过线缆连接，即确保PV组件的数量与PU装置的数量相对应即可，本发明对此不作限定。
PU装置中，PU输入端包括有输入端的正极与负极，对应的，PU输出端包括输出端的正极与负极，PU输入端的正极与PU输出端的正极连通，PU输入端的负极与PU输出端的负极连通。
此外，上述实施例中的直流母线通常连接有负载。
通过上述实施例中的太阳能供电系统，由于包括光伏PV组件以及直流母线在内的太阳能供电系统中，所述PV组件对应设置有PU装置，PU装置中，设置在与所述PV组件相连接的所述PU输入端的负极以及与所述直流母线相连接所述PU输出端的负极之间的DC/DC单元，可在所述PU输入端与所述PU输出端之间实现变压。因此，本实施例中的太阳能供电系统可以解决一些情形中PU装置所需设置的器件以及布线过于复杂的问题， 以达到减少PU装置设置中器件以及线路的数量，从而降低成本以及施工复杂度的效果。
图2是根据相关的PU装置的内部示意图，如图2所示，相关的太阳能供电系统中的PU装置中的DC/DC单元往往设置在PU输入端的正极与PU输出端的正极之间；在相关的PU装置的内部构造下，由于PU装置的DC/DC单元设置在PU输入端的正极与PU输出端的正极之间，故PU装置中PU输入端的负极与PU输出端的负极无法进行独立的回路控制，进而导致每一个PU装置仅能单独与对应的PV组件连接(如将多个PU装置与多个PV组件汇接，则极易出现电流从某一个PU装置的负极侧回流，而导致器件损坏)，并在PU装置的PU输入端的正极与负极之上分别设置对应的直流防雷器件。图3是根据相关的太阳能供电系统的系统示意图，相关的太阳能供电系统如图3所示。
较于相关的PU装置的内部构造，本实施例中的太阳能供电系统通过将DC/DC单元设置在PU输入端的负极与PU输出端的负极之间以使得每一个PU装置的PU输入端的负极与PU输出端的负极之间可进行独立的回路控制，进而使得PU装置无论如何与PV装置连接，PU装置的PU输入端的负极与PU输出端的负极之间均可避免过流现象。此外，上述PU装置的内部构造亦可使得仅需在PU输入端的正极与负极之间设置唯一的直流保护器件，即可实现一些情形中，多个直流保护器件的作用。
在一实施例中，PU装置106还包括：
输入电流检测单元1068，配置为对PU输入端1062的输入电流进行检测，输入电流检测单元1068设置在PU输入端1062的负极与DC/DC单元1066之间；
输出电流检测单元1070，配置为对PU输出端1064的输出电流进行检测，输出电流检测单元1070设置在PU输出端1064的负极与DC/DC单元1066之间。
需要进一步说明的是，图4是根据本发明实施例提供的PU装置的内部示意图，上述实施例中，输入电流检测单元以及输出电流检测单元的结构设置如图4所示。上述输入电流电测单元以及输出电流检测单元可分别对PU装置中PU输入端的输入电流以及PU输出端的输出电流进行检测，从而使得DC/DC单元可以根据对应的检测结果进行变压处理。上述实施例中的输入电路检测单元以及输出电路检测单元，可配合设置在PU输入端的负极与PU输出端的负极之间的DC/DC单元的工作，以进一步改善PU装置中的回路控制，以及对PV组件的MPPT控制。在一实施例中，输入电流检测单元由第一检测电阻构成，输出电流检测单元由第二电测电阻构成。
在一实施例中，上述太阳能供电系统还包括PV组件集合108，其中，PV组件集合108中包括有多个PV组件102；PV组件集合108中的每一个PV组件102均对应设置有一个PU装置106。
需要进一步说明的是，上述实施例中的，PV组件集合指示多个PV组件的集合，该集合并非指代一个确定的实体，具体即指代太阳能供电系统中多个PV组件的总称；PV组件集合中的多个PV组件可以按照预设的连接方式进行相互连接。
在一实施例中，PV组件集合108包括集合输出端1082，PV组件102包括PV输出端1022；其中，多个PV组件的PV输出端1022的正极汇接至集合输出端1082的正极，多个PV组件的PV输出端1022的负极汇接至集合输出端1082的负极；
集合输出端1082的正极连接至直流母线104中，集合输出端1082的负极分别连接至多个PU装置中PU输入端1062的负极。
需要进一步说明的是，上述PV输出端即指示PV组件对应的输出端，PV输出端也包括正极与负极；集合输出端即指示多个PV组件构成的PV组件集合对应设置的独立的输出端，该集合输出端是唯一的，集合输出端也包括正极与负极。PV组件集合中，多个PV组件之间所采用的连接方式为并联连接，具体而言，多个PV组件的PV输出端的正极汇接至集合输出端的正极，具体指示多个PV输出端的正极统一与集合输出端的正极相连接，具体可以是多个PV输出端的正极分别连接至集合输出端的正极，也可以是多个PV输出端的正极先依次连接，再将连接后的线路接入集合输出端的正极，本发明对此不作限定。同样的，多个PV组件的PV输出端的负极汇接至集合输出端的负极，具体指示多个PV输出端的负极统一与集合输出端的负极相连接，具体可以是多个PV输出端的负极分别连接至集合输出端的负极，也可以是多个PV输出端的负极先依次连接，再将连接后的线路接入集合输出端的负极，本发明对此也不作限定。
上述直流母线可以包括正线与负线，本实施例中，集合输出端的正极接入至直流母线的正线；直流母线的负线可以进行接地处理，同时直流母线还可以连接至负载，本发明对此不作限定。上述集合输出端的负极分别连接至多个PU装置中PU输入端的负极，即指示集合输出端分别与每一个PU装置的PU输入端的负极相连接。图5是根据本发明实施例提供的太阳能供电系统的系统示意图(二)，上述实施例中的太阳能供电系统中，部件间的连接关系如图5所示。
通过上述实施例，由于上述多个PV组件先进行并联，即形成PV组件集合，再通过PV组件集合统一与多个PU装置进行连接，因此，PV组件与PU组件之间的线缆布局，较于一些情形中PV组件与PU组件之间进行一一连接的线缆布局，不仅在数量上明显减少而使得成本下降；并且，在施工过程中可以在PV组件一侧先对多个PV组件进行线缆的连接，即将多个PV组件的PV输出端汇接至PV组件集合的集合输出端，同时在多个PU装置一侧再进行线缆的分配，即将集合输出端分别与多个PU装置的PU输入端连接； 上述施工方式可使得线缆布局中可分别在多个PV组件侧以及多个PU装置侧进行布线，从而令施工的复杂度明显降低。
需要进一步说明的是，上述多个PV组件与PU装置的连接是建立在本实施例中的PU装置内部结构上的，即PU装置中，将DC/DC单元设置在PU输入端的负极与PU输出端的负极之间。具体而言，上述将DC/DC单元设置在PU输入端的负极与PU输出端的负极之间，则使得每一个PU模块的负极可独立进行回路控制，从而避免多个PU装置汇接后，电流从某一个PU装置的PU输入端的负极与PU输出端的负极之间回流。
另一方面，上述实施例中的太阳能供电系统中，由于多个PV组件采用汇接，故对于PU装置而言，任意一个PU装置均可通过上述集合输出端与上述PV组件进行连接；故此，在设计系统可靠性时，仅需对PU装置进行备份处理(N+1备份)，而对于PV组件则无需进行备份处理。相较于一些情形中，需同时对PV组件以及PU装置进行备份处理，上述实施例可使得系统工作中的备份成本下降。
此外，上述实施例中的太阳能供电系统在后期检测过程中，对于PV组件输出为高压直流的应用场景，由于多个PV组件采用汇接，故无需对每一个PV组件分别进行绝缘检测，而仅需对汇接后的PV组件集合对应的集合输出端进行绝缘检测即可，故还可进一步降低检测成本。
在一实施例中，集合输入端的正极与集合输入端的负极之间设置有第一保护单元110；
其中，第一保护单元110包括设置在集合输入端的正极与集合输入端的负极之间的第一保护电阻。
需要进一步说明的是，由于上述实施例中，多个PV组件与多个PU装置之间是通过PV组件集合的集合输出端进行连接的，而多个PU装置分别与该集合输出端并联，因此，在集合输出端的正极与集合输入端的负极之间设置保护单元，即可实现对多个PU装置的直流防雷保护。相较于一些情形中，每一个PU模块分别对应设置保护单元，上述实施例明显使得保护单元，即第一保护电阻的数量设置减少，从而显著减少了PU装置设置过程中的器件成本。
上述第一保护电阻可以为压敏电阻。
在一实施例中，上述太阳能供电系统还包括：
控制单元，配置为根据直流母线所连接的负载电流，指示多个PU装置中的一个或多个PU装置进行休眠。
需要进一步说明的是，上述实施例中的控制单元可以为PU装置的控制单元，也可以为太阳能供电系统的整体控制单元，如CPU或微机等等，本发明对此不作限定。采用上述 实施例中的方案，在直流母线所连接的负载电流较低的情形下，一个或几个对应的PU装置即可驱动负载进行工作，例如，一个PU装置的输出电流为50A，负载实际所需电流为30A，则一个PU装置即可驱动负载，此时，如果多个PU装置同时工作，即多个PU装置按照均流输出，则每一个PU装置的输出电流为30/N(N为PU装置的数量)，进而导致每个PU装置输出的电流都较小。由于PU装置的转换效率在不同的负载点都是不同的，并且，PU装置的转换效率在部分负载区间内较于其它负载点更高，因此；采用上述实施例中对PU装置的休眠控制，即可以控制PU装置的输出电流，从而使得处于工作状态下PU装置具有更优的转换效率。
在一实施例中，每一个PU输入端的负极还设置有第一PU输入开关112。
在一实施例中，PV组件包括PV输出端；其中，每一个PV组件的PV输出端分别连接至PV组件对应的PU装置的PU输入端。
需要进一步说明的是，上述实施例中，多个PV组件之间相互独立，每一个PV组件均对应PU装置，PV组件的PV输出端与对应的PU装置对应的PU输入端之间，可采用PV输出端的正极与PU输入端的正极连接，PV输出端的负极与PU输入端的负极之间进行连接的方式。图6是根据本发明实施例提供的太阳能供电系统的系统示意图(三)，上述实施例中的太阳能供电系统的结构可参加图6。
在一实施例中，每一个PU装置的PU输入端的正极与PU输入端的负极之间设置有第二保护单元114；
其中，第二保护单元包括设置在PU输入端的正极与PU输入端的负极之间的第二保护电阻。
需要进一步说明的是，一些情形中，由于PV组件的输出端的正极与负极，分别与对应的PU装置的输入端的正极与负极连接，因此，在设置PU装置的直流防雷模块时需针对正极与负极分别设置一个接地的保护电阻。
上述实施例中，每一个PU装置对应的PU输入端均设置有第二保护单元，且该第二保护单元为第二保护电阻。上述实施例的设置是在本实施例中的太阳能供电系统的结构设置为基础的；具体而言，本实施例中的PU装置中，PU装置中的DC/DC单元设置在PU输入端的负极与PU输出端的负极之间，因此，通过在PU输入端的正极与负极之间设置一个保护电阻即可实现直流防雷处理。显然地，上述实施例中，保护电阻的数量设置为一些情形中保护电阻的数量的1/2，故亦可使得PU装置设置过程中的器件成本显著减少。
上述第二保护电阻也可以采用压敏电阻。
在一实施例中，每一个PU输入端的正极还设置有第二PU输入开关116，每一个PU 输入端的负极还设置有第三PU输入开关118。
在一实施例中，DC/DC单元106包括：第一MOS管、第二MOS管、第三MOS管以及第四MOS管；
其中，第一MOS管与第二MOS管设置在PU输入端的负极与PU输出端的负极之间，第三MOS管设置在第一MOS管与PU输出端的正极之间，第四MOS管设置在第二MOS管与PU输出端的正极之间；
第一MOS管与PU输出端的负极之间还设置有第一电感，第二MOS管与PU输出端的负极之间还设置有第二电感。
需要进一步说明的是，图7是根据本发明实施例提供的DC/DC单元的电路示意图，上述DC/DC单元的内部电路构造如图7所示。在图7所示的DC/DC单元的内部电路构造的基础上，可进一步对上述不同情形下的太阳能供电系统的系统内部构成进行补充，图8是根据本发明实施例提供的太阳能供电系统的电路示意图(一)，图8与上述图5中的太阳能供电系统，即多个PV组件汇聚的布局方式对应。图9是根据本发明实施例提供的太阳能供电系统的电路示意图(二)，图9与上述图6中的太阳能供电系统，即PV组件与PU装置一一对应的布局方式对应。需要进一步说明的是，图8与图9中的PU装置的内部的DC/DC单元的电路构造均如图7所示。
实施例2
本实施例还提供了一种太阳能供电系统的控制方法，该控制方法应用于实施例1中的太阳能供电系统，图10是根据发明实施例提供的太阳能供电系统的控制方法的流程图，如图10所示，该太阳能供电系统的控制方法包括：
S202，通过开关单元在PU装置的PU输入端与PU输出端之间实现变压，以对太阳能供电系统进行最大功率点跟踪MPPT控制。
在一实施例中，上述太阳能控制系统包括：输入电流检测单元、输出电流检测单元；上述步骤S202还包括：
根据输入电流检测单元对PU输入端的输入电流进行检测以获取第一检测信息，并根据输出电流检测单元对PU输出端的输出电流进行检测以获取第二检测信息；
通过开关单元根据第一检测信息以及第二检测信号，在PU装置的PU输入端与PU输出端之间实现变压，以对太阳能供电系统进行最大功率点跟踪MPPT控制。
需要进一步说明的是，上述第一检测信息即输入电流检测单元对PU装置中PU输入端的输入电流的检测结果，上述第二检测信息即输出电流检测单元对PU装置中PU输出端的输出电流的检测结果。根据上述第一检测信息以及第二检测信息，DC/DC单元即可进 行变压处理，以进一步改善PU装置中的回路控制，以及对PV组件的MPPT控制。在一实施例中，输入电流检测单元由第一检测电阻构成，输出电流检测单元由第二电测电阻构成。
在一实施例中，上述方法还包括：
根据直流母线所连接的负载电流，指示多个PU装置中的一个或多个PU装置进行休眠。
需要进一步说明的是，上述实施例中，在直流母线所连接的负载电流较低的情形下，一个或几个对应的PU装置即可驱动负载进行工作，例如，一个PU装置的输出电流为50A，负载实际所需电流为30A，则一个PU装置即可驱动负载，此时，如果多个PU装置同时工作，即多个PU装置按照均流输出，则每一个PU装置的输出电流为30/N(N为PU装置的数量)，进而导致每个PU装置输出的电流都较小。由于PU装置的转换效率在不同的负载点都是不同的，并且，PU装置的转换效率在部分负载区间内较于其它负载点更高，因此；采用上述实施例中对PU装置的休眠控制，即可以控制PU装置的输出电流，从而使得处于工作状态下PU装置具有更优的转换效率。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。
实施例3
在本实施例中还提供了一种太阳能供电系统的控制装置，该装置应用于实施例1中所述的太阳能供电系统，该装置被设置为实现上述实施例及实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图11是根据本发明实施例提供的太阳能供电系统的控制装置的结构框图，如图11所示，该装置包括：
控制模块301，配置为通过开关单元在PU装置的PU输入端与PU输出端之间实现变压，以对太阳能供电系统进行最大功率点跟踪MPPT控制。
在一实施例中，上述太阳能控制系统包括：输入电流检测单元、输出电流检测单元；上述装置还包括：
根据输入电流检测单元对PU输入端的输入电流进行检测以获取第一检测信息，并根据输出电流检测单元对PU输出端的输出电流进行检测以获取第二检测信息；
通过开关单元根据第一检测信息以及第二检测信号，在PU装置的PU输入端与PU输出端之间实现变压，以对太阳能供电系统进行最大功率点跟踪MPPT控制。
在一实施例中，上述装置还包括：
根据直流母线所连接的负载电流，指示多个PU装置中的一个或多个PU装置进行休眠。
需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述各个模块以任意组合的形式分别位于不同的处理器中。
实施例4
本发明的实施例还提供了一种电子装置，如图12所示，包括存储器401和处理器402，该存储器401中存储有计算机程序，该处理器402被设置为运行计算机程序以执行上述任一项方法实施例中的步骤。
在本实施例的一些示例中，上述电子装置还可以包括传输设备以及输入输出设备，其中，该传输设备和上述处理器402连接，该输入输出设备和上述处理器402连接。
在本实施例的一些示例中，上述处理器402可以被设置为通过计算机程序执行以下步骤：
S1，通过开关单元在PU装置的PU输入端与PU输出端之间实现变压，以对太阳能供电系统进行最大功率点跟踪MPPT控制。
本实施例中的具体示例可以参考上述实施例及实施方式中所描述的示例，本实施例在此不再赘述。
实施例5
本发明的实施例还提供了一种计算机可读存储介质，存储有计算机程序，其中，所述计算机程序被设置为执行上述任一项方法实施例中的步骤。
通过本发明一些实施例，由于包括光伏PV组件以及直流母线在内的太阳能供电系统中，所述PV组件对应设置有PU装置，PU装置中，设置在与所述PV组件相连接的所述PU输入端的负极以及与所述直流母线相连接所述PU输出端的负极之间的DC/DC单元，可在所述PU输入端与所述PU输出端之间实现变压。因此，本发明实施例可以解决一些情形中PU装置所需设置的器件以及布线过于复杂的问题，以达到减少PU装置设置中器件以及线路的数量，从而降低成本以及施工复杂度的效果。
显然，本领域的技术人员应该明白，上述的本发明实施例的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组 成的网络上，在一些实施例中，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的若干实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (18)

  1. 一种太阳能供电系统，包括：光伏PV组件以及直流母线；其中，所述PV组件对应设置有电源单元PU装置，所述PU装置包括：
    PU输入端，设置为与所述PV组件相连接；
    PU输出端，设置为与所述直流母线相连接；
    直流斩波DC/DC单元，设置在所述PU输入端的负极与所述PU输出端的负极之间，所述DC/DC单元配置为在所述PU输入端与所述PU输出端之间实现变压。
  2. 根据权利要求1所述的系统，其中，所述PU装置还包括：
    输入电流检测单元，配置为对所述PU输入端的输入电流进行检测，所述输入电流检测单元设置在所述PU输入端的负极与所述DC/DC单元之间；
    输出电流检测单元，配置为对所述PU输出端的输出电流进行检测，所述输出电流检测单元设置在所述PU输出端的负极与所述DC/DC单元之间。
  3. 根据权利要求1或2所述的系统，还包括PV组件集合，其中，所述PV组件集合中包括有多个所述PV组件；所述PV组件集合中的每一个所述PV组件均对应设置有一个PU装置。
  4. 根据权利要求3所述的系统，其中，所述PV组件集合包括集合输出端，所述PV组件包括PV输出端；其中，多个所述PV组件的所述PV输出端的正极汇接至所述集合输出端的正极，多个所述PV组件的所述PV输出端的负极汇接至所述集合输出端的负极；
    所述集合输出端的正极连接至所述直流母线中，所述集合输出端的负极分别连接至多个所述PU装置中所述PU输入端的负极。
  5. 根据权利要求4所述的系统，其中，所述集合输入端的正极与所述集合输入端的负极之间设置有第一保护单元；
    其中，所述第一保护单元包括设置在所述集合输入端的正极与所述集合输入端的负极之间的第一保护电阻。
  6. 根据权利要求4所述的系统，还包括：
    控制单元，配置为根据所述直流母线所连接的负载电流，指示多个所述PU装置中的一个或多个所述PU装置进行休眠。
  7. 根据权利要求4所述的系统，其中，每一个所述PU输入端的负极还设置有第一PU输入开关。
  8. 根据权利要求3所述的系统，其中，所述PV组件包括PV输出端；其中，每一个所述PV组件的所述PV输出端分别连接至所述PV组件对应的所述PU装置的所述PU输入端。
  9. 根据权利要求8所述的系统，其中，每一个所述PU装置的所述PU输入端的正极与所述PU输入端的负极之间设置有第二保护单元；
    其中，所述第二保护单元包括设置在所述PU输入端的正极与所述PU输入端的负极之间的第二保护电阻。
  10. 根据权利要求8所述的系统，其中，每一个所述PU输入端的正极还设置有第二PU输入开关，每一个所述PU输入端的负极还设置有第三PU输入开关。
  11. 根据权利要求1所述的系统，其中，所述DC/DC单元包括：第一MOS管、第二MOS管、第三MOS管以及第四MOS管；
    其中，所述第一MOS管与所述第二MOS管设置在所述PU输入端的负极与所述PU输出端的负极之间，所述第三MOS管设置在所述第一MOS管与所述PU输出端的正极之间，所述第四MOS管设置在所述第二MOS管与所述PU输出端的正极之间；
    所述第一MOS管与所述PU输出端的负极之间还设置有第一电感，所述第二MOS管与所述PU输出端的负极之间还设置有第二电感。
  12. 根据权利要求2所述的系统，其中，所述输入电流检测单元由第一检测电阻构成，所述输出电流检测单元由第二电测电阻构成。
  13. 一种太阳能供电系统的控制方法，应用于权利要求1至12任一项中所述的太阳能供电系统；包括：
    通过所述DC/DC单元在所述PU装置的所述PU输入端与所述PU输出端之间实现变压，以对所述太阳能供电系统进行最大功率点跟踪MPPT控制。
  14. 根据权利要求13所述的方法，其中，所述太阳能控制系统包括：输入电流检测单元、输出电流检测单元；所述方法还包括：
    根据所述输入电流检测单元对所述PU输入端的输入电流进行检测以获取第一检测信息，并根据所述输出电流检测单元对所述PU输出端的输出电流进行检测以获取第二检测信息；
    通过所述DC/DC单元根据所述第一检测信息以及所述第二检测信号，在所述PU装置的所述PU输入端与所述PU输出端之间实现变压，以对所述太阳能供电系统进行最大功率点跟踪MPPT控制。
  15. 根据权利要求13所述的方法，还包括：
    根据所述直流母线所连接的负载电流，指示多个所述PU装置中的一个或多个所述PU装置进行休眠。
  16. 一种太阳能供电系统的控制装置，应用于权利要求1至12任一项中所述的太阳能供电系统；包括：
    控制模块，配置为通过所述DC/DC单元在所述PU装置的所述PU输入端与所述PU输出端之间实现变压，以对所述太阳能供电系统进行最大功率点跟踪MPPT控制。
  17. 一种电子装置，包括存储器和处理器，其中，所述存储器中存储有计算机程序，所述处理器被设置为运行所述计算机程序以执行权利要求13至15任一项中所述的方法的步骤。
  18. 一种计算机可读存储介质，存储有计算机程序，其中，所述计算机程序被设置为执行权利要求13至15任一项中所述的方法的步骤。
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