Publisher : The Korean Institute of Power Electronics
DOI : 10.6113/JPE.2016.16.3.1236
Title & Authors
Design and Implementation of an Active EMI Filter for Common-Mode Noise Reduction Lee, Kuk-Hee; Kang, Byeong-Geuk; Choi, Yongoh; Chung, Se-Kyo; Won, Jae-Sun; Kim, Hee-Seung;
This paper presents the analysis and design of an active electromagnetic interference (EMI) filter (AEF) for the common-mode (CM) noise reduction of switching power converters. The features of the several types of AEFs are discussed and compared in terms of implementation. The feed-forward AEF with a voltage-sensing and voltage-cancellation (VSVC) structure is implemented for an LLC resonant converter to replace a multiple-stage passive EMI filter and thereby reduce CM noise. The characteristics and performance of the VSVC-type AEF are investigated through theoretical and experimental works.
Active EMI filter;Common-mode noise;EMI;Noise reduction;
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