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Paper Abstract and Keywords
Presentation 2020-07-02 13:50
A simplified simulation method of common-mode current considering imbalances of signal sources
Takato Yonemura (Kyutech), Koichi Kikuchi (TDK), Tohlu Matsushima, Yuki Fukumoto (Kyutech) EMCJ2020-12
Abstract (in Japanese) (See Japanese page) 
(in English) It is challenging to simulate electromagnetic phenomena, such as common-mode current for in-vehicle equipment that complies with the CIRPR 25 measurement standard, since the long and complicated wires cannot model accurately. Therefore, we propose an equivalent circuit model that is composed of a common-mode bundled cable and a common-mode excitation source in this report. Here, even if the original model is a differential transmission system, the common-mode current is generated due to the imbalances of components such as a common-mode filter, the cable and the termination circuit. The proposed model takes into account the Scd21 representing the mode conversion from differential-mode to common-mode, in addition to the Scc21 representing the transmission characteristic of common-mode. The calculated common-mode current flowing the cable by using the proposed model is in agreement with an average error of 3dB compared to the measurement for the circuit without the common-mode filter. It also agrees with an average error of 5dB compared to the measurement for the circuit with the common-mode filter.
Keyword (in Japanese) (See Japanese page) 
(in English) electromagnetic simulation / common-mode / common mode filter / Scc21 / Scd21 / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 83, EMCJ2020-12, pp. 7-12, July 2020.
Paper # EMCJ2020-12 
Date of Issue 2020-06-25 (EMCJ) 
ISSN Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee EMCJ  
Conference Date 2020-07-02 - 2020-07-02 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Young Scientist Meeting 
Paper Information
Registration To EMCJ 
Conference Code 2020-07-EMCJ 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A simplified simulation method of common-mode current considering imbalances of signal sources 
Sub Title (in English)  
Keyword(1) electromagnetic simulation  
Keyword(2) common-mode  
Keyword(3) common mode filter  
Keyword(4) Scc21  
Keyword(5) Scd21  
1st Author's Name Takato Yonemura  
1st Author's Affiliation Kyushu Institute of Technology (Kyutech)
2nd Author's Name Koichi Kikuchi  
2nd Author's Affiliation TDK Corporation (TDK)
3rd Author's Name Tohlu Matsushima  
3rd Author's Affiliation Kyushu Institute of Technology (Kyutech)
4th Author's Name Yuki Fukumoto  
4th Author's Affiliation Kyushu Institute of Technology (Kyutech)
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Speaker Author-1 
Date Time 2020-07-02 13:50:00 
Presentation Time 25 minutes 
Registration for EMCJ 
Paper # EMCJ2020-12 
Volume (vol) vol.120 
Number (no) no.83 
Page pp.7-12 
Date of Issue 2020-06-25 (EMCJ) 

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