单级不对称半桥变换器的研究  

Research on Asymmetrical Half-bridge in a Single Stage PFC Converter

作　　者：蒋勇[1] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《电源技术应用》2005年第10期5-8,共4页Power Supply Technologles and Applications

摘　　要：单级PFC结构简单,成本低,详细地介绍了一种基于不对称半桥的单级不对称半桥变换器,分析了它的工作原理及主要参数选择,并用实验验证了其实现PFC和ZVS的特性。Single stage PFC converters have lower cost and simplicity than two-stage converters. This is especially important for low power converter. The operating principle of asymmetrical half-bridge in a single stage PFC AC/DC converter is presented. A prototype of 90W, 18V converter was building to verify theoretical analysis of proposed converter.

关 键 词：功率因数校正 不对称半桥 零电压开关 

分 类 号：TM46[电气工程—电器]