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Inverter including a switch between a midpoint of a DC intermediate circuit and a neutral conductor terminal of an AC grid and method of operating the inverter
Inverter including a switch between a midpoint of a DC intermediate circuit and a neutral conductor terminal of an AC grid and method of operating the inverter
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机译:包括在直流中间电路的中点和交流电网的中性导体端子之间的开关的逆变器和操作该逆变器的方法
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摘要
A method of operating a transformerless inverter connected on the input side to a generator and on the output side to a multiphase AC grid and comprising a multi-phase inverter bridge with a switch between a midpoint of a DC intermediate circuit on the input side and a terminal for a neutral conductor of the multiphase AC grid, includes feeding electric power from the DC intermediate circuit into the AC grid by the inverter bridge with the switch closed when first operating conditions are present, and opening the switch when there is a transition from the first operating conditions to second operating conditions different from the first operating conditions. The method further includes feeding electric power from the DC intermediate circuit into the AC grid by the inverter bridge with the switch open when the second operating conditions are present, and closing the switch when there is a transition from the second operating conditions to the first operating conditions.
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