工矿自动化2013，Vol.39Issue(1)：70-74,5.DOI:10.7526/j.issn.1671-251X.2013.01.019
一种改进型ip-iq谐波检测法
An improved ip-iq harmonic detection method
公茂法 1张旭 1朱义凯1
作者信息
- 1. 山东科技大学信息与电气学院,山东青岛 266510
- 折叠
摘要
Abstract
The paper introduced basic theory of ip-iq method based on instantaneous reactive power theory, and pointed out that there is error of amplitude and phase of active current component of fundamental wave detected by traditional ip-iq method because of phase difference between power grid voltage and its positive-sequence component. It proposed an improved ip-iq harmonic detection method. The improved method acquires synchronous rotation signal through combining positive-sequence voltage components with phase shift operator, which reduces detection error caused by three-phase voltage asymmetry, and introduces current mean value theory to replace low-pass filter, so as to improve dynamic response capability of harmonic detection. The Matlab simulation results showed the improved method can detect positive-sequence active current of fundamental wave correctly under condition of three-phase voltage asymmetry and has good dynamic response performance.关键词
三相不对称系统/谐波检测/ip-iq法/同步旋转信号/平均值理论Key words
three-phase asymmetry system/ harmonic detection/ ip-iq method/ synchronization rotation signal/ current mean value theory分类
矿业与冶金引用本文复制引用
公茂法,张旭,朱义凯..一种改进型ip-iq谐波检测法[J].工矿自动化,2013,39(1):70-74,5.
