基于基波磁通补偿的串联型有源滤波器  

A Series Active Power Filter Based on Fundamental Magnetic Flux Compensation

作　　者：陈乔夫[1] 李达义[1] 魏亚南[1] 

机构地区：[1]华中理工大学电力工程系

出　　处：《华中理工大学学报》2000年第12期82-84,共3页Journal of Huazhong University of Science and Technology

基　　金：国家自然科学基金!资助项目 (5 96 770 0 2 )

摘　　要：研究了基于基波磁通补偿的串联型有源滤波器 .跟踪检测到的电网中基波电流信号 ,产生基波电流 ,将此电流注入串联变压器 (其原线圈串联在电网中 )的副线圈中 ,在满足基波磁通补偿条件下 ,变压器铁心中基波主磁通为零 ,原方线圈对电网基波电流呈近似零阻抗 ,而对谐波电流呈高阻抗 .样机试验证明了结论的正确性 .A series active power filter based on fundamental magnetic flux compensation has been developed and tested. Following fundamental current signal in power circuit, the fundamental current with the same frequency is generated by a converter of the filter and flows through the secondary winding of a series transformer. Under the satisfaction of flux compensation, the fundamental magnetic flux is zero in the core of series transformer. The series impedance of primary winding of transformer is low impedance near zero for fundamental current and high impedance for total harmonics.

关 键 词：串联型有源滤波器 基波 磁通补偿 谐波电流 串联变压器 电力网 

分 类 号：TN713.8[电子电信—电路与系统] TM712[电气工程—电力系统及自动化]