摘要
针对实际应用中LLC谐振变换器存在许多问题,分析了适用于微网系统中连接储能系统的CLLLC谐振变换器的工作原理,利用基波分析法(FHA)建立变换器等效模型,得到其增益曲线,分析了谐振参数差异对增益曲线的影响。采用一种复合软起动控制策略,有效降低了启动过程中谐振网络中的冲击电压和电流。采用一种电流控制型同步整流控制策略,提高了变换器的效率。利用MATLAB/Simulink进行仿真,仿真结果验证了CLLLC谐振变换器设计和理论分析的正确性。
The operating principle of the CLLLC resonant converter applicable to the connection of energy storage system in the micro-grid system is analyzed,the equivalent model of the converter is established by using FHA to obtain its gain curve,and the influence of the difference of resonant parameters on the gain curve is analyzed.A compound soft-start control strategy is adopted to effectively reduce the inrush voltage and current in the resonant network during the starting process.A current-controlled synchronous rectifier control strategy is adopted to improve the efficiency of the converter.MATLAB/Simulink is used for simulation,and the simulation results verify the correctness of the design and theoretical analysis of CLLLC resonant converter.
作者
岳云力
张靖
李顺昕
李宇航
温春雪
Yue Yunli;Zhang Jing;Li Sunxin;Li Yuhang;Wen Chunxue(State Grid Jibei Electric Economic Research Institute,Beijing 100070,China;Tsinghua University Energy Internet Innovation Institute,Beijing 100084,China;Frequency Conversion Technology Engineering Research Center,North China University of Technology,Beijing 100144,China)
出处
《电测与仪表》
北大核心
2023年第8期1-6,共6页
Electrical Measurement & Instrumentation
基金
国家重点研发计划项目(2018YFB1503005.02)
国家自然科学基金项目(51777002)
国家电网有限公司科技项目(5278991900ML)
张家口地区重点产业发展对有限可再生能源消纳能力提升潜力研究报告。
关键词
储能系统
CLLLC谐振变换器
软起动
同步整流
energy storage system
CLLLC resonant converter
soft-start
synchronous rectification
