一种新型的高效率Boost PWM变换器的研究  

Research on a Novel High Efficiency Boost PWM Converter

作　　者：梁奇峰[1] 彭建宇[1] 

机构地区：[1]中山火炬职业技术学院,广东中山528436

出　　处：《电气自动化》2008年第4期12-14,共3页Electrical Automation

摘　　要：传统的 Boost ZVT PWM 变换器的主开关管实现了软开关,但是辅助开关管是在硬开关下关断。因此,变换器的效率低。提出了一种新型的 Boost ZVT PWM 变换器,详细分析它的工作原理及实现软开关的条件。实验结果证明了所提出的 Boost 变换器的有源开关管和二极管均实现了软开关,并且在满载时效率可达到94%左右。新型的 Boost ZVT PWM 变换器的思想也可以扩展到其它的基本变换器拓扑中得到新型零电压转换 PWM 变换器。In the conventional Boost ZVT PWM converter, the main switch realizes soft switching while the auxiliary switch is still by hard-switch turned off. So its efficiency is low, A novel soft-switching Boost ZVT PWM converter is proposed in this paper, the operation principles of the new Boost converter and the conditions for realization of soft switching are analyzed in detail. The experimental results verify that all active switches and diodes in the new converter operate with soft switching, and its efficiency is about 94% at full load. The concept of Boost ZVT PWM converter can be extended to the other basic converters to obtain novel ZVT PWM converters.

关 键 词：关断损耗 零电压转换 辅助开关管 

分 类 号：TM46[电气工程—电器]