Investigation and Reduction of Common Mode Current in Center-Tapped Transformer of LLC Resonant Converters

被引：4

作者：

He, Binghui ^{[1
]}

Chen, Yang ^{[1
]}

Liu, Wenbo ^{[1
]}

Sheng, Bo ^{[1
]}

Liu, Yan-Fei ^{[1
]}

Sen, Paresh C. ^{[1
]}

机构：

[1] Queens Univ, Dept Elect & Comp Engn, Kingston, ON, Canada

来源：

2022 IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION, APEC | 2022年

关键词：

Common mode; LLC converter; resonant tank; transformer; EMI NOISE; SHIELDING TECHNIQUE; SUPPRESS;

D O I：

10.1109/APEC43599.2022.9773439

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：

This paper investigates the effects of resonant tank arrangements on the common mode (CM) noise current. CM noise reduction methods with symmetrical transformer winding structure and split resonant tank are proposed for full bridge (FB) LLC converters. For half bridge (HB) LLC converters, CM noise cancellation capacitor Ccan is proposed to fully cancel the CM noise current flowing through the transformer. The corresponding extraction and calculation techniques of Ccan are provided. Both techniques are lossless and easy to implement. The capabilities and excellence of aforementioned methods are verified by experiments.

引用

页码：1686 / 1691

页数：6

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