低电流纹波双向CLLC变换器的研究  

Research on a Low Current Ripple of Bidirectional CLLC Converter

作　　者：李小文 江良星 王华云 王长坤[2] 查海涛 LI Xiaowen;JIANG Liangxing;WANG Huayun;WANG Changkun;ZHA Haitao(State Grid Nanchang Changbei Power Supply Company,Nanchang 330063,Jiangxi,China;Information Engineering Institute,Nanchang Hangkong University,Nanchang 330063,Jiangxi,China;Electric Power Research Institute,State GridJiangxi Electric Power Co.,Ltd.,Nanchang 330063,Jiangxi,China;Zhelin Hydropower Plant,State Grid Jiangxi Electric Power Co.,Ltd.,Yongxiu 330300,Jiangxi,China)

机构地区：[1]国网南昌市昌北供电公司,江西南昌330063 [2]南昌航空大学信息工程学院,江西南昌330063 [3]国网江西省电力有限公司电力科学研究院,江西南昌330063 [4]国网江西电力有限公司柘林水电厂,江西永修330300

出　　处：《电气传动》2022年第3期31-37,共7页Electric Drive

基　　金：国家自然科学基金项目(61963030)。

摘　　要：为解决LLC电路通常需要大电容滤波的问题,提出了一种基于星型连接的三相型双向CLLC谐振变换器。一方面该变换器在正反两种运行状态时都能实现软开关;另一方面,由于该变换器的输出电流纹波更小,可以减少电路的输出电容。同时也对变换器的模型进行了分析,给出了系统的增益曲线。最后搭建仿真模型和制作一台2 kW实验样机,仿真和实验结果都验证了所提变换器的可行性和有效性。LLC resonant converter usually requires large capacitance filter. In order to solve this problem,a three-phase bidirectional CLLC resonant converter based on star connection was proposed. On the one hand,the proposed converter can achieve soft switching in both forward and reverse operating states;on the other hand,because the output current ripple of the converter is smaller,the output capacitance of the circuit can be reduced. The converter model was analyzed and the gain curve of the system was given. Finally,a simulation model and a 2 kW experimental prototype were built to verify the feasibility and effectiveness of the proposed converter.

关 键 词：星型连接 双向 CLLC谐振变换器 基波分析法 

分 类 号：TM461.5[电气工程—电器]