Abstract:Under unbalance grid voltage and distortion conditions, the output active power and current of grid-connected inverter will be secondary pulsation and distortion. In order to improve the quality of grid-connected inverter current, reduce the impact of the grid-connected inverter to the grid effectively, research on grid-connected inverter control strategy under unbalanced voltage has become important. In this paper, focus on grid synchronization, extract the positive-negative-sequence frequency current, current control, harmonics and filter, overview of the current control for grid-connected inverter under unbalance voltage conditions is present and evaluated. Furthermore, the trends of the grid inverter under unbalanced grid conditions are discussed.
阳同光,桂卫华. 电网不平衡情况下并网逆变器控制策略综述[J]. 电工技术学报, 2015, 30(14): 241-246.
Yang Tongguang,Gei Weihua. An Overview on Control Strategies of Grid-connected Inverter under Unbalanced Voltage Conditions. Transactions of China Electrotechnical Society, 2015, 30(14): 241-246.
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