Title:
PHOTOVOLTAIC SYSTEM AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2023/019448
Kind Code:
A1
Abstract:
Disclosed in the present application are a photovoltaic system and a control method. The system comprises a plurality of first converters, a second converter, an inverter and a controller, wherein the controller acquires the sum of input voltages of the plurality of first converters, which are connected to each other in series; the controller adjusts output voltages of the first converters when the sum of the input voltages of the plurality of first converters is greater than a first voltage, such that the sum of the input voltages of the first converters is less than or equal to the first voltage; and the controller adjusts an output voltage of the second converter when the sum of the input voltages of the first converters is less than a second voltage, such that the output voltage of the second converter is greater than or equal to the second voltage, and the first converters remain in a state where the input voltages thereof are adjusted according to the power thereof. By means of the photovoltaic system provided in the present application, the number of photovoltaic assemblies in a photovoltaic string can be flexibly configured, such that the configuration situation of the photovoltaic assemblies in the photovoltaic string is not limited by an input voltage of an inverter, and the power generation capacity of the photovoltaic system can be improved as a whole.
Inventors:
YAO XIAOFENG (CN)
GU GUILEI (CN)
GU GUILEI (CN)
Application Number:
PCT/CN2021/113109
Publication Date:
February 23, 2023
Filing Date:
August 17, 2021
Export Citation:
Assignee:
HUAWEI DIGITAL POWER TECH CO LTD (CN)
International Classes:
H02J3/38; H02S40/32
Domestic Patent References:
| WO2021155563A1 | 2021-08-12 |
Foreign References:
| CN107104461A | 2017-08-29 | |||
| CN106961151A | 2017-07-18 | |||
| CN105743432A | 2016-07-06 | |||
| CN205407286U | 2016-07-27 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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