用于谐波电流检测的新型同步检测法  

Novel Synchronous Detection Method for Harmonic Currents Detection

作　　者：郝瑞祥[1] 傅仲文[1] 程志光[2] 

机构地区：[1]河北工业大学 [2]保定天威集团技术中心

出　　处：《电气传动》2005年第1期31-34,共4页Electric Drive

基　　金：河北省自然科学基金资助(503068)

摘　　要：通过对同步检测法进行改进,提出了一种以电网基波正序电压分量为基准的同步检测法,与传统的 同步检测方法相比,该方法检测精度较高,能够在电网电压非对称和畸变情况下准确检测电网中谐波电流,同 时还可进行无功功率补偿,提高了三相系统平均功率因数。In this paper, a novel synchronous detection method is proposed, which is based on the detection of positive sequence voltage components of the electric network. Compared with traditional synchronous detection methods, the proposed method in this paper has more accuracy and can correctly detect harmonic currents of the electric network, under the asymmetry and distorted conditions. Moreover, the new proposed method can compensate reactive power to improve average power factor of three-phase systems.

关 键 词：谐波电流检测 无功功率补偿 电网电压 基波 三相 电压 同步检测 平均功率 畸变 非对称 

分 类 号：TM714.3[电气工程—电力系统及自动化] TN713.8[电子电信—电路与系统]