标题：Several Methods to Improve the Accuracy of Adaptive Harmonic Current Detection for Single-Phase Circuits
作者：Wang Jianmin; Guo Zhen; Zhao Xiaomin; Tian Mengmeng
作者机构：[Wang Jianmin; Guo Zhen; Zhao Xiaomin; Tian Mengmeng] Shandong Univ, Sch Elect Engn, Jinan 250061, Peoples R China.
会议名称：IEEE 11th International Conference on Electronic Measurement and Instruments (ICEMI)
会议日期：AUG 16-19, 2013
来源：PROCEEDINGS OF 2013 IEEE 11TH INTERNATIONAL CONFERENCE ON ELECTRONIC MEASUREMENT & INSTRUMENTS (ICEMI)
关键词：harmonic current; adaptive detection; accuracy; improving measurements
摘要：In adaptive harmonic current detecting method based on the principle of adaptive noise cancellation, there is a contradiction between the detecting accuracy and the detecting speed. The accuracy can be improved by using a lower learning rate, but it will be accompanied by the deterioration in dynamic response, and vice versa. This is because that there are a series of pulsating components in the weight factor even at steady state. In the paper, the pulsating components are analyzed firstly. Then several methods to improve the accuracy of the adaptive harmonic current detection for single-phase circuits by reducing the pulsating components in the weight are proposed. Their performances are investigated by simulation.