LLCL滤波器无源阻尼对比分析  

Passive Damping Analysis of LLCL Filters

作　　者：杨凯 王继忠[1] 刘德君 YANG Kai;WANG Jizhong;LIU Dejun(College of Electrical and Information Engineering,Beihua University,Jilin 132021,China;Engineering Training Center of Beihua University,Jilin 132021,China)

机构地区：[1]北华大学电气与信息工程学院,吉林吉林132021 [2]北华大学工程训练中心,吉林吉林132021

出　　处：《北华大学学报（自然科学版）》2020年第1期134-140,共7页Journal of Beihua University（Natural Science）

基　　金：吉林省教育厅科学技术研究项目(2015148)

摘　　要：针对三相并网LLCL滤波器存在的固有谐振尖峰问题,提出4种基于LLCL滤波器的无源阻尼方法.在相同条件下,分别对4种LLCL滤波器在谐振尖峰的抑制能力、开关频率处陷波效果、阻抗特性、功率损耗以及网侧谐波抑制能力进行对比分析,通过仿真试验验证所提方法的正确性.研究结果可为三相并网滤波器的优化、设计提供参考.In order to solve the problem of inherent resonant peaks for a three-phase grid-connected LLCL filters,four methods of passive damping based on LLCL filters are proposed. Under the same conditions,four kinds of LLCL filters are analyzed and compared in respects of resonance peak suppression ability,notch effect at switching frequency,impedance characteristics,power loss and harmonic suppression ability at network side. The simulation test has verifies the correctness of the above methods. The research findings can provide references for the optimization and design of three-phase grid-connected filters.

关 键 词：LLCL滤波器 谐振尖峰 无源阻尼 

分 类 号：TM464[电气工程—电器]