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	Analysis on the EMI effect of stray magnetic field from main circuit of a PFC switched mode power supply
	He Jun-ping ; Chen Wei ; Jiang Jian-guo
	2010-05-06 ; 2010-05-06
关键词	Practical Experimental/ electromagnetic interference filters inductors magnetic fields power factor correction switching convertors/ stray magnetic field PFC switched mode power supply onboard EMI filter magnetic coupling effect PFC inductor magnetic field distribution power factor correction converter attenuation characteristic electromagnetic compatibility/ B8360 Power convertors and power supplies to apparatus B5230 Electromagnetic compatibility and interference
中文摘要	The attenuation characteristic of on board EMI filter may be deteriorated greatly by the stray magnetic field produced by main circuit of switched mode power supply. The magnetic coupling effect between a PFC inductor and an EMI common mode choke is studied by experiments after analyzing the stray magnetic field distribution characteristic of PFC inductor and the sensitivity of common mode choke. A differential mode EMI model of this PFC converter is built up, which includes the magnetic coupling effect. Based on this model, the coupling EMI component is distinguished. The unequal EMI emission phenomena on L and N line is explained too. In the end, several measures are proposed to decrease DM emission and verified by experiments.
语种	英语 ; 英语
出版者	Chinese Soc. Electr. Eng ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/11754]
专题	清华大学
推荐引用方式 GB/T 7714	He Jun-ping,Chen Wei,Jiang Jian-guo. Analysis on the EMI effect of stray magnetic field from main circuit of a PFC switched mode power supply[J],2010, 2010.
APA	He Jun-ping,Chen Wei,&Jiang Jian-guo.(2010).Analysis on the EMI effect of stray magnetic field from main circuit of a PFC switched mode power supply..
MLA	He Jun-ping,et al."Analysis on the EMI effect of stray magnetic field from main circuit of a PFC switched mode power supply".(2010).

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