Common Mode Noise Reduction for an LLC Resonant Converter by Using Passive Noise Cancellation

被引：2

作者：

Ryu, Younggon ^{[1
]}

Kim, Sungnam ^{[2
]}

Jeong, Geunseok ^{[2
]}

Park, Jaesu ^{[2
]}

Kim, Duil ^{[2
]}

Park, Jongwook ^{[2
]}

Kim, Jingook ^{[1
]}

Han, Ki Jin ^{[1
]}

机构：

[1] Ulsan Natl Inst Sci & Technol, Sch Elect & Comp Engn, Ulsan, South Korea

[2] LG Elect, Pyeongtaek, South Korea

来源：

JOURNAL OF ELECTROMAGNETIC ENGINEERING AND SCIENCE | 2015年 / 15卷 / 02期

基金：

新加坡国家研究基金会;

关键词：

Common Mode Noise; Electromagnetic Compatibility; LLC Resonant Converter; Passive Noise Cancellation;

D O I：

10.5515/JKIEES.2015.15.2.89

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 describes the application of a passive noise cancellation method to a prototype inductor-inductor-capacitor (LLC) resonant converter by placing a compensation winding in a transformer to reduce common mode noise. The connection method for the compensation winding is investigated. A circuit analysis is implemented for the displacement currents between the primary and secondary windings in the transformer. The analyzed displacement currents are verified by performing a circuit simulation and a proper compensation winding connection that reduces common mode noise is found. The measurement results show that common mode noise is reduced effectively up to 20 dB in the 1 to 7 MHz frequency region for the prototype LLC resonant converter by using the proposed passive noise cancellation method.

引用

页码：89 / 96

页数：8

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