电器与能效管理技术Issue(4)：31-40,10.DOI:10.16628/j.cnki.2095-8188.2025.04.005
基于谐振腔电流优化的CLLC变换器参数设计
Parameter Design of CLLC Converter Based on Resonant Cavity Current Optimization
摘要
Abstract
CLLC converters are widely used in new energy power conversion systems because of their wide voltage gain range and easy realization of soft switching.However,the fundamental wave approximation method widely used in its design has the relatively large errors when it is far away from the resonant point.Therefore,a parameter design method of CLLC converter based on the time domain model is proposed from the perspective of resonant cavity current optimization.Firstly,the voltage gain of the converter and the current characteristics of the resonant cavity are analyzed based on the time domain model,and a constraint function of characteristic impedance and resonant current is proposed.Then,the parameter design domain is obtained with the domain using the constraining the gain,mode boundary and zero voltage switching(ZVS)condition,and the optimal design point is obtained with the domain using the constraint function.Finally,a 1 kW prototype is designed to verify the feasibility of the proposed method,and the peak efficiency of the prototype reaches 97.48％.关键词
CLLC变换器/时域模型/谐振电流/效率优化Key words
CLLC converter/time domain model/resonant current/efficiency optimization分类
信息技术与安全科学引用本文复制引用
李世茂,黄晓生,沈焜,林抒毅..基于谐振腔电流优化的CLLC变换器参数设计[J].电器与能效管理技术,2025,(4):31-40,10.基金项目
国家自然科学基金项目(51607039) （51607039）
福建省自然科学基金项目(2023J01949、2022J01950) （2023J01949、2022J01950）
