储能充电用可变结构组合式谐振变换器设计  

Design of Variable Structure Combined Resonant Converter for Energy Storage and Charging

作　　者：谭兴国[1] 张飞祥 TAN Xing-guo;ZHANG Fei-xiang(Henan Polytechnic University,Jiaozuo 454000,China)

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454000

出　　处：《电力电子技术》2023年第12期113-116,120,共5页Power Electronics

基　　金：国家自然科学基金(52267018)。

摘　　要：蓄电池充电主要分为恒压充电和恒流充电两个过程,传统的谐振变换器通常采用调频控制方法实现,该方法存在调节频率过宽的问题。针对此问题,这里提出了一种在恒定频率下实现恒压和恒流输出的电路拓扑。所提组合式谐振变换器可以实现开关管的零电压开通和次级整流二极管的零电流关断,降低了开关管的工作频率范围,从而实现高效率低损耗,减少了元器件的数量,提高了变换器的功率密度。这里讨论了所提变换器的结构及工作原理、电压和电流增益及参数设计方法。最后,通过实验验证了所提谐振变换器拓扑结构的可行性。Battery charging is mainly divided into two processes:constant voltage charging and constant current charging.The traditional resonant converter usually adopts frequency modulation control method,which has the problem of regulating frequency too wide.To solve this problem,a circuit topology of constant voltage and constant current output at constant frequency is proposed.The proposed combined resonant converter can realize zero voltage opening of the switching tube and zero current turn-ff of the secondary rectifier diode,and reduce the operating frequency range of the switching tube,so as to achieve high efficiency and low loss.The number of components is reduced and the power density of the converter is increased.The structure and working principle of the proposed converter,voltage and current gain,and the parameter design method are discussed.Finally,the feasibility of the proposed resonant converter topology is verified by experiments.

关 键 词：谐振变换器 蓄电池 恒压充电 恒流充电 

分 类 号：TM46[电气工程—电器]