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Paper Abstract and Keywords
Presentation 2015-12-18 10:45
FM-Band Noise Current Analysis Focused on Grounding of Power Converter
Yoshihiro Kida, Tatsuya Ozawa, Shinji Ohoka, Yasuhiro Fukagawa (SOKEN), Kaoru Torii (TMC) EMCJ2015-92
Abstract (in Japanese) (See Japanese page) 
(in English) FM-band noise current emitted from power converter such as DC-DC converter depends on the structure of chassis of the power converter, vehicle body (body) and conductor connecting the chassis to the vehicle body electrically (grounding). From the analysis of 3D electromagnetic simulation, we hypothesized that these chassis, body and conductor act as a termination for the transmission line consisting of the converter’s shielded cable. The peaks of FM-band noise current calculated from the equivalent circuit based on the hypothesis agreed with those measured from actual circuit within 2% of errors, which indicates the hypothesis is valid. So, the peaks of FM-band noise current are estimated to be the result of noise current reflection caused by the mismatch between the characteristic impedance of the transmission line and the termination. We propose a novel method of inserting resistance that is equivalent to the characteristic impedance mentioned above between the chassis and the body, which achieve approximately 10dB peak suppression.
Keyword (in Japanese) (See Japanese page) 
(in English) Noise Current / Peak / Power Converter / Chassis / Shielded Cable / Body / Grounding /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 377, EMCJ2015-92, pp. 13-18, Dec. 2015.
Paper # EMCJ2015-92 
Date of Issue 2015-12-11 (EMCJ) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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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 IEE-EMC  
Conference Date 2015-12-18 - 2015-12-18 
Place (in Japanese) (See Japanese page) 
Place (in English) TOYOTA CENTRAL R&D LABS., INC. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Power electronics, EMC 
Paper Information
Registration To EMCJ 
Conference Code 2015-12-EMCJ-EMC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) FM-Band Noise Current Analysis Focused on Grounding of Power Converter 
Sub Title (in English)  
Keyword(1) Noise Current  
Keyword(2) Peak  
Keyword(3) Power Converter  
Keyword(4) Chassis  
Keyword(5) Shielded Cable  
Keyword(6) Body  
Keyword(7) Grounding  
Keyword(8)  
1st Author's Name Yoshihiro Kida  
1st Author's Affiliation NIPPON SOKEN, INC. (SOKEN)
2nd Author's Name Tatsuya Ozawa  
2nd Author's Affiliation NIPPON SOKEN, INC. (SOKEN)
3rd Author's Name Shinji Ohoka  
3rd Author's Affiliation NIPPON SOKEN, INC. (SOKEN)
4th Author's Name Yasuhiro Fukagawa  
4th Author's Affiliation NIPPON SOKEN, INC. (SOKEN)
5th Author's Name Kaoru Torii  
5th Author's Affiliation TOYOTA MOTOR CORPORATION (TMC)
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Speaker Author-1 
Date Time 2015-12-18 10:45:00 
Presentation Time 20 minutes 
Registration for EMCJ 
Paper # EMCJ2015-92 
Volume (vol) vol.115 
Number (no) no.377 
Page pp.13-18 
#Pages
Date of Issue 2015-12-11 (EMCJ) 


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