全桥LLC谐振变流器的简化时域模型及其应用  

Simplified time domain model of full-bridge LLC resonant converter and its application

作　　者：肖文英[1] 董海兵[1] 

机构地区：[1]湖南工学院电气与信息工程学院,湖南衡阳421002

出　　处：《华东师范大学学报（自然科学版）》2013年第5期119-129,共11页Journal of East China Normal University(Natural Science)

基　　金：湖南省教育厅科研项目(12C0645);衡阳市科学技术发展基金(2011GK71)

摘　　要：以全桥LLC谐振变流器作为研究对象,在对LLC谐振变流器的时域工作模式进行深入分析的基础上,建立各个模式的状态方程以及模式间的边界条件,并进一步提出了一种简化的时域分析模型.基于该模型,推导得到了对LLC谐振变流器设计重要意义的变流器增益曲线.应用该简化模型及对应的增益曲线,提出了基于励磁电感L_m和电感比h的LLC谐振变流器的谐振腔参数设计方法.最后,设计并制作了一台300W的样机,仿真和实验结果都验证了该模型的准确性和设计方法的可行性.Full bridge LLC resonant converter was studied,and a simplified time domain model was proposed based on the state equation of different modes and their related boundary equations based on deep analyze of time domain working mode of LLC resonant converter.Based on this model,gain curve of LLC resonant converter was deduced which is very important for the design of LLC resonant design.Using this presented model and its relating gain curve,LLC resonant tank design method based on magnetizing inductance Lm and inductance ratio h was proposed. Finally,a three-hundred-watt prototype was designed and build,simulated and experimental result verified the accuracy of the time domain model and the feasibility of the design method.

关 键 词：LLC谐振变流器 简化时域模型 增益曲线 谐振腔设计 

分 类 号：TM41[电气工程—电器]