Novel three-level power factor corvect circuit with passive soft switching

被引：0
|
作者：
Wu, Hong-Yang [1 ]
He, Xiang-Ning [1 ]
机构：
[1] Power Electron. Inst., Zhejiang Univ., Hangzhou 310027, China
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2002年 / 22卷 / 10期
关键词：
Computer simulation - Diodes - Electric converters - Switching;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The paper presents a novel single phase there-level PFC circuit with passive soft switching. The three-level Buck and Boost topologies are derived from the traditional diode clamped three-level inverters' bridge leg firstly. Then, a single phase three-level PFC circuit is discussed based on the three-level BOOST topology. Two passive soft switching snubber cells are added to three-level PFC circuit to soften the switching processes of the switches and freewheeling diodes. It's operating principle and design considerations are discribed in detail. At last, a 2kW prototype of the single phase three-level PFC with the passive soft switching is built and tested. The simulated and experimental results show that the circuit can realize the three-level PFC function and increase system efficiency as well as have no over-voltage stress on main power switches.
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页码：22 / 27
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