摘要
针对一种对称型双向LLC谐振变换器进行原理分析以及参数优化设计,可降低功率开关器件通断时产生的损耗。首先采用基波近似(FHA)的方法分析了变换器的工作原理,得出变换器的直流增益特性曲线。通过分析负载情况以及寄生参数对开关管ZVS和ZCS特性的影响,设计合理的品质因数和谐振参数,以确保负载变化范围内变换器不会进入容性工作区域。最后在saber仿真软件下搭建双向LLC谐振变换器仿真模型,通过仿真结果与理论分析的分析对比,验证了参数优化设计的可行性和准确性。
This paper mainly designs a bidirectional LLC resonant converter with symmetrical structure about the analysis of theory and optimization design of parameters to reduce the loss of power switching.Firstly,the operating principle of the converter is analyzed by the approach of fundamental component method（FHA） to obtain the DC voltage gain versus.The paper also analyses the impaction of load and parasitic parameters on ZVS and ZCS of power switches.A reasonable quality factor and resonant parameters are designed to ensure that the converter will not enter the capacitive working area.Finally,the simulation model of bi-directional LLC resonant converter is built in the saber simulation software,and the feasibility and accuracy of the parameter optimization design are verified by the simulation results and theoretical analysis.
作者
李树娟
张振国
叶玉曜
邓得洋
Li Shujuan Zhang Zhenguo Ye Yuyao Deng Deyang(School of Optical Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, Chin)
出处
《电子测量技术》
2017年第6期58-61,75,共5页
Electronic Measurement Technology
