基于开关导通角的全桥LCC谐振变换器分析与参数设计  

Analysis and parameter design of full-bridge LCC resonant converter based on switch conduction angle

作　　者：刘茂武 秦亮[1] 翟少磊 段怡 李登云[4] 魏龄 LIU Maowu;QIN Liang;ZHAI Shaolei;DUAN Yi;LI Dengyun;WEI Ling(School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China;Electric Power Research Institute,Yunnan Power Grid Co.,Ltd.,Kunming 650217,China;Yunnan Yundian Tongfang Technology Co.,Ltd.,Kunming 650217,China;China Electric Power Research Institute,Wuhan 430074,China)

机构地区：[1]武汉大学电气与自动化学院,湖北武汉430072 [2]云南电网有限责任公司电力科学研究院,云南昆明650217 [3]云南云电同方科技有限公司,云南昆明650217 [4]中国电力科学研究院,湖北武汉430074

出　　处：《武汉大学学报（工学版）》2022年第10期1050-1056,共7页Engineering Journal of Wuhan University

基　　金：云南电网有限责任公司科技项目(编号:YNKJXM20190047)。

摘　　要：分析了高压直流电源的LCC谐振变换器软开关工作过程,采用基波近似法建立了高压直流电源主电路的等效模型。在此基础上,分析了并联谐振电容以及开关管导通角对变换器性能的影响,提出了基于开关管导通角的谐振变换器参数设计方法。仿真结果表明:在各种负载范围内,所设计的LCC谐振变换器均可以实现零电压软(zero voltage soft, ZVS)开关,满足设计指标,验证了本设计方法的正确性。This paper analyzes the soft switch working process of LCC resonant converter of high-voltage direct current(DC) power supply, and establishes the equivalent model of the main circuit of the high-voltage DC power supply by adopting the fundamental harmonic approximation. On this basis, the influences of the parallel resonant capacitor and the conduction angle of the switch tube on the performance of the converter are analyzed,and the parameter design method of the resonant converter based on the switch conduction angle is proposed.The simulation results show that in various load ranges, the designed LCC resonant converter can realize zero voltage soft(ZVS) switching, meet the design index, and verify the correctness of the design method.

关 键 词：LCC谐振变换器 开关导通角 基波近似法 软开关 参数设计 

分 类 号：TM46[电气工程—电器]