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基于改进正弦调制电流注入的三相交流电源系统谐波阻抗测量研究

, PP. 257-264

Keywords: 谐波阻抗,测量,正弦调制,电流注入

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Abstract:

三相交流电源系统在三相静止坐标系下的谐波阻抗参数是对系统进行谐波估计、滤波器设计等谐波分析的重要参数。但在采用基于阻抗的稳定性判据对交流系统进行稳定性分析时,需要得到系统在dq坐标系下的谐波阻抗参数。推导了系统中典型元件在dq坐标系下的谐波阻抗模型;提出了一种改进的基于正弦调制电流注入的交流系统谐波阻抗测量方法;搭建了三相交流系统的仿真模型,并开发了交流系统谐波阻抗测量装置。仿真与实验结果验证了理论分析的正确性与有效性。

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