Abstract：The ride-through operation of photovoltaic(PV) generation under unbalanced grid voltage will produce apparent harmonic currents. This paper studied on power control of PV under unbalanced voltage, and analyzed the total harmonic distortion and the component of each harmonic of the inverter currents. Then the analytic formulas of power fluctuation, current total harmonic distortion and each current harmonic of the PV inverter were derived, and two algorithms of the adjustment coefficients of PV power control were proposed. The control strategy model of current harmonic suppression under unbalanced grid voltage was built. The feasibility of this method was verified by the simulation results produced by PSCAD/EMTDC.
周念成,楼晓轩,王强钢,王佳佳. 电网电压不平衡下三相光伏发电系统的谐波电流抑制[J]. 电工技术学报, 2015, 30(16): 245-253.
Zhou Niancheng,Lou Xiaoxuan,Wang Qianggang,Wang Jiajia. Harmonic Currents Suppression for Three-Phase Photovoltaic Power Generation System Under Unbalanced Grid Voltage Conditions. Transactions of China Electrotechnical Society, 2015, 30(16): 245-253.
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