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对现有的几种瞬时谐波电流检测方法进行了分析对比，并针对这些方法的不足提出了一种新的瞬时谐波电流检测的方法，从原理上分析了这种方法的正确性，并通过计算机仿真证明了这种方法的可行性。
Several existing methods of instantaneous harmonic current detection are analyzed and compared, and a new method of instantaneous harmonic current detection is proposed according to the deficiency of these methods. The correctness of this method is analyzed in principle The feasibility of this method is proved by computer simulation.