LLC谐振变换器与传统PWM变换器的分析与比较  

The Analysis and Comparison between LLC Resonant Converter and Traditional PWM Converter

作　　者：许文香[1] 蔡丽娟[1] 

机构地区：[1]华南理工大学电力学院,广东广州510640

出　　处：《通信电源技术》2007年第6期12-14,18,共4页Telecom Power Technology

摘　　要：介绍了半桥LLC谐振变换器和不对称半桥PWM变换器的拓扑和工作原理,并从拓扑结构、控制方式和次级应力上对两者做了详细的分析和对比,最后在仿真的基础上对两者的损耗和效率进行了比较,进一步说明了LLC谐振变换器相对于不对称半桥PWM变换器在高频化、宽输入电压应用上的优势。The topologies and principles of LLC half bridge resonant and asymmetrical half bridge are presented in this paper and it analyses in detail that the differences in the aspects of the structures, the controlling ways and the stress of the secondary rectifiers between the two converters. The comparison of converters loss is based on the simulation which shows that the LLC half bridge resonant compared to the asymmetrical half bridge has the advantage in high frequency and the wide power supply.

关 键 词：半桥LLC谐振变换器 不对称半桥PWM变换器 损耗和效率比较 

分 类 号：TM46[电气工程—电器]