在对混合电力滤波器的原理分析基础上，提出了检测交流侧谐波电流的控制方法。

A control method of AC side harmonic current detection, based on the keystone analyzing of the parallel hybrid power filter, has been put forward in the study.

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为了降低逆变器输出电压的谐波，简单且实用的方法是在逆变器的交流输出侧加装l C滤波器。

In order to reduce total harmonic distortion factor of the inverter's output voltage, adding LC filter to inverter's output is a simple and practical method adopted extensively currently.

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本论文以西北—华中联网背靠背直流换流站工程为基础，进行换流站交流侧谐波和交流滤波器的研究。

Based on the Back-to-Back Project for the Northwest and Central China Connection, This report studies the harmonics and ac filter at ac side in the HVDC converter station.

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