全桥LLC谐振变流器的简化时域模型及其应用

华东师范大学学报(自然科学版) ›› 2013, Vol. 2013 ›› Issue (5): 119-129.

全桥LLC谐振变流器的简化时域模型及其应用

肖文英，董海兵

湖南工学院电气与信息工程学院，湖南衡阳 421002

收稿日期:2012-11-01 修回日期:2013-02-01 出版日期:2013-09-25 发布日期:2013-09-30

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

XIAO Wen-ying, DONG Hai-bing

School of Electrical and Information Engineering, Hunan Institute of Technology, Hengyang Hunan 421002, China

Received:2012-11-01 Revised:2013-02-01 Online:2013-09-25 Published:2013-09-30

摘要/Abstract

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.

关键词: LLC谐振变流器, 简化时域模型, 增益曲线, 谐振腔设计

Abstract: 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.

Key words: LLC resonant converter, simplified time domain model, gain curve, design of resonant converter tank

中图分类号:

TM41

肖文英，董海兵. 全桥LLC谐振变流器的简化时域模型及其应用[J]. 华东师范大学学报(自然科学版), 2013, 2013(5): 119-129.

XIAO Wen-ying, DONG Hai-bing. Simplified time domain model of full-bridge LLC resonant converter and its application[J]. Journal of East China Normal University(Natural Sc, 2013, 2013(5): 119-129.

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