不对称三相电路畸变电流和负序电流的一种实时检测方法

A REAL-TIME DETECTING METHOD FOR DISTORTION AND NEGATIVE CURRENT IN UNBALANCED THREE-PHASE CIRCUIT

电力有源滤波器能动态补偿不对称三相电路的畸变电流、负序电流分量。为此需准确检测这些电流分量，本文提出了一种实时检测不对称三相电路畸变和负序电流分量之和的方法，并对该检测方法进行了理论分析，仿真实验证明了所提方法的正确性，其检测性能优于其它方法。

Active power filter can compensate current components which include distortion and negative sequence current components when it is used in unbalanced three-phase circuit. So these distortion and negative sequence current components should be detected precisedly. For this purpose, a realtime detecting method has been proposed, which is used to detect distortion, negative sequence current components. The detecting method has been analysed theoretically, and demonstrated by digital simulation and experiment, and has advantage over others.