DC bus imbalance in a three phase four wire grid connected inverter
نویسندگان
چکیده
DC bus imbalance in a split capacitor based rectifier or inverter system is a widely studied issue. In this paper the DC bus imbalance problem has been studied for a three phase four wire grid connected inverter where the midpoint of the split capacitor is connected to the neutral of grid. The problem has been analysed from common mode point of view and subsequently a low frequency common mode model of the entire system has been obtained. The same model helps to find a suitable corrective action. Obtained experimental results confirm the correctness of the theoretical understandings.
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