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采用三相系统复信号的频域表示并根据频谱搬移原理 ,本文提出了一种基于同步相关滤波的谐波检测方法 ,可用于三相电路中除正序基波以外广义谐波的有效检测。针对三相交 -交变频器交流励磁发电系统的谐波检测进行的仿真研究 ,验证了本文方法的有效性
Based on the frequency domain representation of the complex signal of the three-phase system and based on the principle of spectrum shift, a harmonic detection method based on synchronous correlation filtering is proposed in this paper. It can be used for the effective detection of generalized harmonics in the three-phase circuit except for the fundamental wave of the positive sequence. The simulation research on the harmonic detection of AC-AC power generation system of three-phase AC-AC frequency converter verifies the effectiveness of the proposed method