Passive Lossless Snubber with Minimum Voltage and Current Stress for Boost PFC

被引：0
|
作者：
Li, River T. H. [1 ]
Chung, Henry S. H. [1 ]
Sung, Anson K. T. [1 ]
机构：
[1] City Univ Hong Kong, Kowloon Tong, Hong Kong, Peoples R China
来源：
2009 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION, VOLS 1-6 | 2009年
关键词：
Passive lossless snubber; boost converter; power factor corrector; SOFT-SWITCHING METHODS; ENGINEERING DESIGN; PWM CONVERTERS; CIRCUIT;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
A passive lossless snubber for boost power factor corrector (PFC) is presented. This snubber has several advantages. First, it does not introduce extra voltage and current stress on the main switch. Second, it provides soft-switching conditions for the main switch over wide input and load range. Third, it limits the turn-on current of the main switch resulting from the reverse recovery current of the output diode. The main switch is turned on with zero current and is turned off with zero voltage. The performance of the proposed snubber has been evaluated experimentally on a 750W PFC with universal input. The boost converter is operated in continuous conduction mode and its input current is shaped by using an average current-mode controller. Experimental results show that soft-switching of the main switch is maintained over 88% with the input of 110V, 60Hz, and 91.8% with the input of 220V, 50Hz, over one line cycle, and from full load to 20% load.
引用
收藏
页码：448 / 455
页数：8
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