不同耦合系数下的交错并联电流连续模式Boost功率因数校正变换器的传导电磁干扰

doi:10.19595/j.cnki.1000-6753.tces.L80224

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Abstract For the interleaved Boost power factor correction (PFC) converter with coupled inductor operating in continuous current mode (CCM), the effects of the coupling coefficient on conducted electromagnetic interference (EMI) were analyzed in this paper. The drain and source voltages of the two switches in the converter were taken as the sources of conducted interference noise. Then the transmission path circuit of the common mode (CM) noise and differential mode (DM) noise of the converter were analyzed, and the equivalent circuit of the noise transmission path was deduced. The amplitude variation of the conducted interference source at different harmonic frequency points in a line cycle was discussed, and the attenuation trend of the noise source amplitude with frequency was given. Thus, the spectrum diagrams of CM noise and DM noise of the converter under different coupling coefficients were obtained. In the case of a certain coupled inductor core, the critical coupling coefficient of the converter was derived in order to maximize the power density when designing the EMI filter. Finally, the analysis was verified by actual tests.

Key words： Continuous current mode power factor correction coupled inductor interleaved electromagnetic interference

Received: 29 June 2018 Published: 29 May 2019

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TM464

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	Cao Yong
	Yang Fei
	Li Chunhui
	Wang Yiping
	Peng Fuming

Cite this article:

Cao Yong,Yang Fei,Li Chunhui等. Conducted Electromagnetic Interference of Interleaved Continuous Current Mode Boost Power Factor Correction Converter with Different Coupling Coefficients[J]. Transactions of China Electrotechnical Society, 2019, 34(10): 2176-2186.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.L80224 OR https://dgjsxb.ces-transaction.com/EN/Y2019/V34/I10/2176

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