Patent ID: 11862981
Assignee: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 11:
12. In a photovoltaic system comprising an inverter, a controller, and a photovoltaic string corresponding to at least two converters, output terminals of the at least two converters being connected in series and connected to an input terminal of the inverter, and an input terminal of each of the at least two converters being connected to a corresponding photovoltaic module;
a photovoltaic system control method comprising:
setting a voltage limiting value of at least one corresponding converter of the at least two converters, so that an output voltage of the at least one converter is less than or equal to the voltage limiting value when the converter works in a voltage limiting mode, wherein the voltage limiting value of the at least one converter is proportional to an open circuit voltage of a photovoltaic module connected to an input terminal of the converter, and is inversely proportional to a sum of open circuit voltages of the photovoltaic string in which the converter is located.