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Control method and system for photovoltaic inverters whose AC sides are connected in parallel
Control method and system for photovoltaic inverters whose AC sides are connected in parallel
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机译:交流侧并联的光伏逆变器的控制方法和系统
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摘要
A control method and apparatus for photovoltaic inverters connected in parallel at an AC side are provided and the method includes the following steps: detecting a first direct voltage of the first inverter and a second direct voltage of the second inverter; obtaining a difference between the first direct voltage and the second direct voltage; and adjusting the direct voltages of the inverters to control the difference to be within a predetermined range and control a common-mode voltage in the common-mode loop to be within a predetermined common-mode voltage range.
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