Common-Mode EMI Study and Reduction Technique for the Interleaved Multichannel PFC Converter

被引:66
作者
Kong, Pen [1 ,2 ]
Wang, Shuo [2 ]
Lee, Fred C. [2 ]
Wang, Chuanyun [2 ]
机构
[1] Tsinghua Univ, Dept Elect Engn, State Key Lab Power Syst, Beijing 100084, Peoples R China
[2] Virginia Polytech Inst & State Univ, Ctr Power Elect Syst, Blacksburg, VA 24061 USA
基金
美国国家科学基金会;
关键词
Electromagnetic interference (EMI); power factor correction (PFC);
D O I
10.1109/TPEL.2008.2002090
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Interleaved multichannel power factor correction (PFC) converter is very popular today because of its ability to reduce input and output current ripples. In this paper, the common-mode (CM) electromagnetic interference noise emission model of the multichannel PFC converter is studied. A balance technique is introduced to reduce CM noise emission. To improve the high-frequency balance, a novel topology with coupled-inductor structure is proposed. Its CM noise model is derived and balance condition for minimizing CM noise is calculated. Effects of phase shift and channel shedding on this solution are also studied. The proposed topology has effectively reduced CM noise under any phase shift and channel shedding conditions. A two-channel PFC converter is built to verify the proposed balance technique. Experimental results show that CM noise can be reduced up to 20 dB between 150 kHz and 7 MHz.
引用
收藏
页码:2576 / 2584
页数:9
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