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Han, Ki Jin
Electromagnetic System Design Lab
Research Interests
  • Electromagnetics, electromechanics, electromagnetic compatibility (EMC)

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

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Title
Common Mode Noise Reduction for an LLC Resonant Converter by Using Passive Noise Cancellation
Author
Ryu, YounggonKim, SungnamJeong, GeunseokPark, JaesuKim, DuilPark, JongwookKim, JingookHan, Ki Jin
Issue Date
2015-04
Publisher
한국전자파학회
Citation
JOURNAL OF ELECTROMAGNETIC ENGINEERING AND SCIENCE, v.15, no.2, pp.89 - 96
Abstract
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.
URI
https://scholarworks.unist.ac.kr/handle/201301/11809
URL
http://www.dbpia.co.kr/Journal/ArticleDetail/3662969
DOI
10.5515/JKIEES.2015.15.2.89
ISSN
2234-8409
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