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电网技术  2006 

基于级联式电压源逆变器的静止同步补偿器直流电压控制策略

, PP. 49-53

Keywords: 静止同步补偿器(STATCOM),电压源逆变器,开关函数,谐波,调制度

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Abstract:

提出了一种基于级联式逆变器的静止同步补偿器直流电容电压控制策略。利用开关函数概念设计电压控制器,克服了非线性物理开关造成的仿真时间过长的问题,同时采用可消除谐波的调制方法将谐波失真控制到最小。仿真实验结果表明该电压源逆变器的拓扑结构决定了该静止同步补偿器可以在无变压器的情况下运行;采用上述控制策略设计的电压控制器能够在扰动作用下迅速将直流电容电压和负载母线电压调节为稳态值。

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