双陷波开关频率滤波器LCLDT的设计  

Design of a Double-Trap Switching Frequency Harmonics Filter LCLDT

作　　者：李林[1] 郭源博[2] 张晓华[1,2] Li Lin;Guo Yuanbo;Zhang Xiaohua(School of Electrical Engineering and Automation Harbin Institute of Technology Harbin 150001 China;School of Electrical Engineering Dalian University of Technology Dalian 116024 China)

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,哈尔滨150001 [2]大连理工大学电气工程学院,大连116024

出　　处：《电工技术学报》2017年第8期256-263,共8页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(51377013;51407023)

摘　　要：传统LCL滤波器及其改进拓扑无法保证在PWM变换器输出的不同频段均具有良好的滤波特性。针对此问题本文提出一种应用于有源滤波器的双陷波开关频率滤波器LCLDT,其兼具LCL滤波器、LLCL滤波器、多调谐陷波滤波器等优点。文中给出了LCLDT滤波器的参数优化设计方法,为其实际工程应用提供理论指导。对各个滤波器在相同背景和成本情况下进行对比研究;仿真和实验验证所提出的LCLDT滤波器的滤波特性优于相关高阶滤波器,能满足电网谐波标准对高次谐波的要求。The traditional LCL filter and its improved topologies fail to guarantee that the outputwaveforms of PWM converter in different bands have good filtering characteristics.The paper presentsa new double-trap switching frequency harmonics filter for active power filter named LCLDT filter.The LCLDT filter combines the advantages of LCL,LLCL filter and multi-tuned traps filter.Theoptimized parameter design method of LCLDT filter is proposed to provide theoretical guidance for itsapplication.Comparison analysis of different filters in same design condition and costs shows thatLCLDT filter has more excellent performance,which can meet the grid requirements.

关 键 词：LCL滤波器 有源滤波器 LCLDT滤波器 开关频率谐波 

分 类 号：TM464[电气工程—电器]