基于同步检测法与i_p-i_q法的一种新型电流检测法  

A new current detection method based on synchronous detection method and i_p-i_q detection method

作　　者：陈小强[1] 马云龙[1] 乔丽芳 

机构地区：[1]兰州交通大学自动化与电气工程学院,甘肃兰州730070 [2]甘肃省电机工程学会,甘肃兰州730000

出　　处：《电源技术》2013年第12期2194-2196,2252,共4页Chinese Journal of Power Sources

基　　金：国家自然科学基金(51167009/E0703)

摘　　要：有源电力补偿系统在动态补偿过程中需要快速、准确地检测出三相系统中的谐波电流、不对称电流以及无功电流。针对三相电源出现畸变或不对称问题,分析了三相不对称系统中的同步检测法和三相四线制系统中的i p-i q检测法,提出了以同步检测法为基础、融合i p-i q法的一种新型检测方法,仿真结果表明该方法能够准确地检测谐波、无功及不对称电流。Active power compensation system in the process of dynamic compensation need to be fast with accurate detection of harmonic currents in three-phase system, the asymmetry current and reactive current. The synchronous detection method in unbalanced three-phase system and three-phase four-line system ip-iq detection method was introduced. A new detection method was proposed based on ip-iq detection method and three-phase power supply distortion or asymmetric. The simulation results show that the method can detect the harmonic, reactive and asymmetrical current more accurately.

关 键 词：同步检测 ip-iq检测 不对称 

分 类 号：TM91[电气工程—电力电子与电力传动]