WO2022047770A1 - 一种光伏设备、光伏逆变器、系统及限功率控制方法 - Google Patents
一种光伏设备、光伏逆变器、系统及限功率控制方法 Download PDFInfo
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- WO2022047770A1 WO2022047770A1 PCT/CN2020/113705 CN2020113705W WO2022047770A1 WO 2022047770 A1 WO2022047770 A1 WO 2022047770A1 CN 2020113705 W CN2020113705 W CN 2020113705W WO 2022047770 A1 WO2022047770 A1 WO 2022047770A1
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- 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
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/38—Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
- H02J3/46—Controlling the sharing of generated power between the generators, sources or networks
- H02J3/466—Scheduling or selectively controlling the operation of the generators or sources, e.g. connecting or disconnecting generators to meet a demand
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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
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/38—Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
- H02J3/381—Dispersed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/38—Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
- H02J3/46—Controlling the sharing of generated power between the generators, sources or networks
- H02J3/48—Controlling the sharing of active power
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2101/00—Supply or distribution of decentralised, dispersed or local electric power generation
- H02J2101/20—Dispersed power generation using renewable energy sources
- H02J2101/22—Solar energy
- H02J2101/24—Photovoltaics
- H02J2101/25—Photovoltaics involving maximum power point tracking control for photovoltaic sources
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- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0009—Devices or circuits for detecting current in a converter
-
- 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
- H02M3/157—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 with digital control
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- 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
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
- H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of DC power input into AC power output without possibility of reversal 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
- H02M7/537—Conversion of DC power input into AC power output without possibility of reversal 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, e.g. single switched pulse inverters
- H02M7/539—Conversion of DC power input into AC power output without possibility of reversal 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, e.g. single switched pulse inverters with automatic control of output wave form or frequency
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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
-
- 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 photovoltaic system is usually controlled to run at the maximum power point.
- the photovoltaic system does not always run at the maximum power point during actual operation, such as DC over-distribution load limit, grid scheduling, power Factor limit, power limit and voltage overrun, etc.
- the controller needs to forcibly increase the input current, that is, increase the input current reference value of the DCDC conversion circuit, according to The input current reference value controls the input current of the DCDC conversion circuit to increase.
- the input current of the DCDC conversion circuit is increased, the input voltage of the DCDC conversion circuit will be forcibly pulled down, thereby avoiding the overvoltage of the DC bus caused by the overvoltage, or exceeding the voltage stress of the switching device.
- the value of the preset voltage can be selected according to the principle of being smaller than the voltage stress of the switching device in the DCDC conversion circuit and smaller than the voltage stress of the switching device in the inverter circuit.
- a current reducing unit configured to reduce the output current of the photovoltaic array to increase the output voltage of the photovoltaic array when the power reference value is less than the power of the maximum power point;
- the embodiments of the present application have the following advantages:
- Figure 1 is a graph of the power and voltage PV of a photovoltaic module
- FIG. 5 is a schematic diagram of a power limit control provided by an embodiment of the present application.
- FIG. 13 is a flowchart of another power control method for photovoltaic power generation provided by an embodiment of the present application.
- the input end of the DCDC conversion circuit 201 is connected to the photovoltaic array 100 , and the output end of the DCDC conversion circuit 201 is connected to the input end of the inverter circuit 202 ;
- the controller 203 is configured to receive a power scheduling instruction of the inverter, and the power scheduling instruction carries a power reference value; when the power reference value is less than the power of the maximum power point, the input current of the DCDC conversion circuit is reduced, to increase the input voltage of the DCDC conversion circuit; when the input voltage of the DCDC conversion circuit is greater than or equal to the preset voltage, increase the input current of the DCDC conversion circuit to reduce the input voltage of the DCDC conversion circuit until the inverse The output power of the inverter is consistent with the power reference value.
- the first photovoltaic string 101 and the second photovoltaic string 102 are connected in parallel to the input end of the photovoltaic device 200;
- the preset voltage is smaller than the voltage stress of the switching device in the DCDC conversion circuit, and is smaller than the voltage stress of the switching device in the inverter circuit.
- the preset voltage can be set to about 500V.
- the above is just an example, and can be selected and set according to the actual application scenario.
- the purpose of the preset voltage is to protect the switching device and the DC bus capacitor.
- this figure is a schematic diagram of the power limit control provided by this embodiment of the present application.
- the input voltage is less than the preset voltage when the power is limited, and the input voltage is greater than or equal to the preset voltage when the power is limited.
- the power corresponding to the PV string is 6000W;
- the first type the input voltage is less than the preset voltage during power limit control
- the photovoltaic device can be controlled to work at the first operating point to the right of the maximum power point.
- the controller reduces the input current reference value Iref of the DCDC conversion circuit, and controls the input current of the DCDC conversion circuit to decrease according to the input current reference value Iref. According to the IV curve, the input voltage of the DCDC conversion circuit increases with the input current. falling and rising.
- the second type the input voltage is greater than or equal to the preset voltage during power limit control
- the traditional adjustment method is that in the process of limiting the power, the input voltage is not considered, and only the required power limit value is adjusted, even if the power corresponding to the reference value of the output power of the inverter circuit, regardless of the corresponding input voltage, for example, when When the power reference value is set, the traditional adjustment method is A->B->C->E.
- the voltage corresponding to point E is greater than the preset voltage, which will cause overvoltage of the DC bus voltage, damage the DC bus capacitors and switching devices, and reduce their service life.
- the DCDC conversion circuit 201 and the inverter circuit 202 are integrated in the inverter; the controller 203 is a controller of the inverter. That is, the photovoltaic device 200 may be a two-level inverter.
- the controller of the inverter controls the input current of the inverter to adjust the output power. Since the input voltage will change during the process of adjusting the input current, it is necessary to determine the input voltage and the preset voltage to adjust the input voltage reference value.
- the controller 203 is the controller of the combiner box 204 .
- the input end of the combiner box 204 is connected to the first photovoltaic array 101 and the second photovoltaic array 102, and the output ends of the first photovoltaic array 101 and the second photovoltaic array 102 are connected in parallel to the input end of the combiner box 205.
- the first photovoltaic array 101 and the second photovoltaic array 102 are connected in parallel outside the combiner box 205 , and may also be connected in parallel within the combiner box 205 , which are not specifically limited in the embodiments of the present application.
- FIG. 7 is a flow chart of power control provided by an embodiment of the present application.
- S701 Receive a power scheduling instruction, and the power scheduling instruction carries a power reference value Pref;
- S702 Determine whether the power reference value Pref is less than the power Pmpp of the maximum power point, if so, execute S704, otherwise execute S703;
- S703 Control the stable operation at the maximum power point, that is, when Pref>Pmpp, control the output power at the maximum power point, that is, perform MPPT control.
- FIG. 9 is an application scenario diagram of a photovoltaic inverter provided by an embodiment of the present application.
- the photovoltaic inverter 300 provided in this embodiment includes an inverter circuit 301 and a controller 302;
- the inverter circuit 301 is used to convert the direct current output from the photovoltaic array 100 into alternating current output;
- the input current of the inverter circuit is the output current of the photovoltaic array, and the output current of the photovoltaic array is controlled to adjust the output power of the inverter.
- the controller reduces the output current reference value of the photovoltaic array, controls the output current of the photovoltaic array to decrease according to the output current reference value, and the output voltage of the photovoltaic array increases with the decrease of the output current.
- the photovoltaic system includes the photovoltaic inverter described in the above embodiments, and the photovoltaic inverter includes an inverter circuit and a controller inside. Since the inverter can control the input voltage to be less than the preset voltage when the power limit control is performed, the switching device and the DC bus capacitor can be better protected, and the overvoltage of the DC bus voltage can be avoided.
- the embodiments of the present application also provide a power limiting control method, and the control method can be applied to the photovoltaic device or inverter introduced in the above embodiments,
- the detailed description is given below in conjunction with the accompanying drawings.
- S1302 Determine whether the power reference value is less than the power Pmpp of the maximum power point, that is, Pref ⁇ Pmpp; if so, execute S1304; otherwise, execute S1303;
- the output power of the inverter can be obtained by detecting the output voltage and output current of the inverter.
- S1304 Determine whether the power reference value is less than the output power, that is, Pref ⁇ Pout; if yes, execute S1305; otherwise, execute S1307;
- S1305 Decrease the input current reference value Iref of the inverter, where the input current of the inverter is the output current of the photovoltaic array for a single-level inverter, and is also the photovoltaic array for a two-level inverter The output current of the array is also the input current of the DCDC conversion circuit.
- the control of the input current reference value of the inverter is the result of the outer loop closed-loop control, while the control of the inverter input current belongs to the closed-loop control of the current inner loop. Specifically, it can detect the input current of the inverter, compare the detected input current with the input current reference value, and control the duty cycle of the driving pulse signal of the switching device in the inverter according to the comparison result, so as to realize For the size control of the input current of the inverter, for example, the specific current closed-loop control can be realized by using a proportional-integral regulator.
- S1306 Determine whether the input voltage of the inverter is less than the preset voltage, that is, Uin>Ulmt, if so, execute S1307; otherwise, execute S1308;
- the judgment of the input voltage of the inverter is added after S1305.
- the input voltage is greater than the preset voltage, it indicates that the voltage is relatively high, so the voltage needs to be limited to avoid overvoltage on the DC bus. , including the switching device and the DC bus capacitor at the same time. Since the voltage is reduced, the input current reference value needs to be increased. Therefore, S1307 needs to be performed.
- the embodiments of the present application further provide a power control device for photovoltaic power generation, including:
- a receiving unit configured to receive a power scheduling instruction of the inverter, where the power scheduling instruction carries a power reference value
- a current reducing unit configured to reduce the output current of the photovoltaic array to increase the output voltage of the photovoltaic array when the power reference value is less than the power of the maximum power point;
- a current increasing unit is used for increasing the output current of the photovoltaic array when the output voltage of the photovoltaic array is greater than or equal to a preset voltage, so as to reduce the output voltage of the photovoltaic array until the output power of the inverter is equal to the output power of the photovoltaic array.
- the power reference value is the same.
- a current increasing unit including a current increasing module, for increasing the output current reference value of the photovoltaic array when the output voltage of the photovoltaic array is greater than or equal to a preset voltage, and controlling the photovoltaic array according to the output current reference value the output current increases.
- It also includes a control unit, configured to control the output power of the inverter to be the power of the maximum power point when the power reference value is greater than or equal to the power of the maximum power point.
- At least one (item) refers to one or more, and "a plurality” refers to two or more.
- “And/or” is used to describe the relationship between related objects, indicating that there can be three kinds of relationships, for example, “A and/or B” can mean: only A, only B, and both A and B exist , where A and B can be singular or plural.
- the character “/” generally indicates that the associated objects are an “or” relationship.
- At least one item(s) below” or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s).
- At least one (a) of a, b or c can mean: a, b, c, "a and b", “a and c", “b and c", or "a and b and c" ", where a, b, c can be single or multiple.
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Abstract
Description
| 参数 | 值 | 单位 |
| 开路电压Voc | 38.25 | V |
| 短路电流Isc | 9.95 | A |
| MPPT电压Vmp | 30.6 | V |
| MPPT电流Imp | 8.5 | A |
| MPPT功率Pmp | 260.1 | W |
Claims (16)
- 一种光伏设备,其特征在于,包括:DCDC转换电路、逆变电路和控制器;所述DCDC转换电路的输入端连接光伏阵列,所述DCDC转换电路的输出端连接所述逆变电路的输入端;所述控制器,用于接收功率调度指令,所述功率调度指令中携带功率参考值;当所述功率参考值小于最大功率点的功率时,降低DCDC转换电路的输入电流,以提高所述DCDC转换电路的输入电压;当DCDC转换电路的输入电压大于等于预设电压时,增加所述DCDC转换电路的输入电流,以降低所述DCDC转换电路的输入电压,直至所述逆变器的输出功率与所述功率参考值一致。
- 根据权利要求1所述的设备,其特征在于,所述控制器,具体用于减小所述DCDC转换电路的输入电流参考值,根据所述输入电流参考值控制所述DCDC转换电路的输入电流下降,所述DCDC转换电路的输入电压随着所述输入电流的下降而上升。
- 根据权利要求1所述的设备,其特征在于,所述控制器,具体用于当所述DCDC转换电路的输入电压大于等于预设电压时,增加所述DCDC转换电路的输入电流参考值,根据所述输入电流参考值控制所述DCDC转换电路的输入电流增加。
- 根据权利要求1-3任一项所述的设备,其特征在于,所述控制器,还用于当所述功率参考值大于等于所述最大功率点的功率时,控制所述逆变器的输出功率为所述最大功率点的功率。
- 根据权利要求1-3任一项所述的设备,其特征在于,所述预设电压小于所述DCDC转换电路中开关器件的电压应力,且小于所述逆变电路中开关器件的电压应力。
- 根据权利要求1-3任一项所述的设备,其特征在于,所述DCDC转换电路和逆变电路集成在逆变器中;所述控制器为所述逆变器的控制器。
- 根据权利要求1-3任一项所述的设备,其特征在于,所述DCDC转换电路集成在汇流箱中,所述汇流箱的输出端连接所述逆变电路的输入端;所述控制器为所述汇流箱的控制器。
- 一种光伏逆变器,其特征在于,包括逆变电路和控制器;所述逆变电路的输入端连接光伏阵列;所述逆变电路,用于将所述光伏阵列输出的直流电转换为交流电输出;所述控制器,用于接收功率调度指令,所述功率调度指令中携带功率参考值;当所述功率参考值小于最大功率点的功率时,降低光伏阵列的输出电流,以提高所述光伏阵列的输出电压;当光伏阵列的输出电压大于等于预设电压时,增加所述光伏阵列的输出电流,以降低所述光伏阵列的输出电压,直至所述逆变器的输出功率与所述功率参考值一致。
- 根据权利要求8所述的逆变器,其特征在于,所述控制器,具体用于减小所述光伏阵列的输出电流参考值,根据所述输出电流参考值控制所述光伏阵列的输出电流下降,所述光伏阵列的输出电压随着所述输出电流的下降而上升。
- 根据权利要求8所述的逆变器,其特征在于,所述控制器,具体用于当所述光伏 阵列的输出电压大于等于预设电压时,增加所述光伏阵列的输出电流参考值,根据所述输出电流参考值控制所述光伏阵列的输出电流增加。
- 根据权利要求8-10任一项所述的逆变器,其特征在于,所述控制器,还用于当所述功率参考值大于等于所述最大功率点的功率时,控制所述逆变器的输出功率为所述最大功率点的功率。
- 一种光伏系统,其特征在于,包括:权利要求1-7任一项所述的光伏设备或权利要求8-11任一项所述的光伏逆变器,还包括:光伏阵列;当包括所述光伏设备时,所述光伏设备的输入端连接所述光伏阵列;当包括所述光伏逆变器时,所述光伏逆变器的输入端连接所述光伏阵列。
- 一种光伏发电的功率控制方法,其特征在于,包括:接收功率调度指令,所述功率调度指令中携带功率参考值;当所述功率参考值小于最大功率点的功率时,降低光伏阵列的输出电流,以提高所述光伏阵列的输出电压;当光伏阵列的输出电压大于等于预设电压时,增加所述光伏阵列的输出电流,以降低所述光伏阵列的输出电压,直至所述逆变器的输出功率与所述功率参考值一致。
- 根据权利要求13所述的控制方法,其特征在于,所述降低光伏阵列的输出电流,具体包括:减小所述光伏阵列的输出电流参考值,根据所述输出电流参考值控制所述光伏阵列的输出电流下降,所述光伏阵列的输出电压随着所述输出电流的下降而上升。
- 根据权利要求14所述的控制方法,其特征在于,所述当光伏阵列的输出电压大于等于预设电压时,增加所述光伏阵列的输出电流,具体包括:当所述光伏阵列的输出电压大于等于预设电压时,增加所述光伏阵列的输出电流参考值,根据所述输出电流参考值控制所述光伏阵列的输出电流增加。
- 根据权利要求13-15任一项所述的控制方法,其特征在于,还包括:当所述功率参考值大于等于所述最大功率点的功率时,控制所述逆变器的输出功率为所述最大功率点的功率。
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| CN115360746A (zh) * | 2022-07-29 | 2022-11-18 | 厦门科华数能科技有限公司 | 光伏系统的控制方法、控制终端及存储介质 |
| CN116126084A (zh) * | 2022-12-22 | 2023-05-16 | 惠州汇能精电科技有限公司 | 一种光伏系统的控制方法和光伏系统 |
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| EP4156434A4 (en) | 2023-07-26 |
| EP4156434B1 (en) | 2025-08-06 |
| AU2020466101A1 (en) | 2023-02-02 |
| CN114556732A (zh) | 2022-05-27 |
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