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http://dx.doi.org/10.6113/JPE.2019.19.1.278

EMI Prediction and Reduction of Zero-Crossing Noise in Totem-Pole Bridgeless PFC Converters  

Zhang, Baihua (Graduate School of Information Science and Electrical Engineering, Kyushu University)
Lin, Qiang (Graduate School of Information Science and Electrical Engineering, Kyushu University)
Imaoka, Jun (Graduate School of Engineering, Nagoya University)
Shoyama, Masahito (Graduate School of Information Science and Electrical Engineering, Kyushu University)
Tomioka, Satoshi (Technology Development Department, TDK-Lambda Corporation)
Takegami, Eiji (Technology Development Department, TDK-Lambda Corporation)
Publication Information
Journal of Power Electronics / v.19, no.1, 2019 , pp. 278-287 More about this Journal
Abstract
In this study, a zero-crossing spike current issue in a totem-pole bridgeless power factor correction (PFC) converter is comprehensively investigated for the first time. Spike current occurs when input voltage crosses zero, becomes a noise source, and causes severe common mode emission issues. A generation mechanism for electromagnetic interference (EMI) is presented to investigate the EMI problem caused by zero-crossing issue, and a noise spectrum due to this issue is predicted by a theoretical analysis based on the Fourier coefficient of an approximate spike current waveform. Furthermore, a noise reduction method is proposed and then improved to reduce the spike current. Experimental measurements are implemented on a GaN-based totem-pole bridgeless PFC converter, and the spike current can be effectively suppressed through the proposed method. Furthermore, the noise spectrums measured without and with the reduced zero-crossing spike current are compared. Experimental results validate the analysis of the noise spectrum caused by the zero-crossing spike current issue.
Keywords
Conducted noise; Noise spectrum; Spike current; Totem-pole bridgeless PFC converter; Zero-crossing;
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Times Cited By KSCI : 3  (Citation Analysis)
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