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《Power Electronics》 2006-01
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An Improved Harmonics Detecting Method based on Synchronous Reference Frame Transformation

XUE Wen-ping,LIU Guo-hai(Jiangsu University,Zhenjiang 212013,China)  
An improved harmonics current ip,iq detecting method based on synchronous reference frame transformation is proposed with the instantaneous reactive power theory.This improved method substitutes conventional low pass filter by in-tegration,delay and gain,which can reduce the detecting delay to 1/6 of source period.The realizing process of this ap-proach with the aid of DSP chip(TMS320F240) is presented in de-tail.The simulative and experimental results indicate the easy realization,high precision and good real-time property of this improved method which can be applied to active power filter system.
【Fund】: 江苏省高新技术项目(BG2004024);; 江苏大学自然科学创新基金(04CX02)~~
【CateGory Index】: TM935.2
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