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Paper Abstract and Keywords
Presentation 2007-03-09 13:50
A study on the inductance of commutation coils in a Universal Motor
Shusuke Iwata, Koichiro Sawa (Keio Univ.) Link to ES Tech. Rep. Archives: EMD2006-77
Abstract (in Japanese) (See Japanese page) 
(in English) Universal Motors are mainly used to household machine tools or cleaners. They are small ‘DC machine’ driven by AC. As most Universal Motors have no auxiliary windings although they have slipping brushes and commutator, they have notable commutation arc on the back-end of the brush. Therefore brushes early come to the end. In order to give them a longer life, many people researched how to control commutation arc for a long time. In this thesis, inductance of commutation coils is researched by the experiment and simulation in order to know the detailed phenomenon about the commutation and effect on the commutation inductance influences the brush’s life.
Keyword (in Japanese) (See Japanese page) 
(in English) Universal motor / Series motor / Commutation / Commutation inductance / Eddy current / Mutual induction / /  
Reference Info. IEICE Tech. Rep., vol. 106, no. 580, EMD2006-77, pp. 13-16, March 2007.
Paper # EMD2006-77 
Date of Issue 2007-03-02 (EMD) 
ISSN Print edition: ISSN 0913-5685
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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)
Download PDF Link to ES Tech. Rep. Archives: EMD2006-77

Conference Information
Committee EMD  
Conference Date 2007-03-09 - 2007-03-09 
Place (in Japanese) (See Japanese page) 
Place (in English) CIT 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMD 
Conference Code 2007-03-EMD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study on the inductance of commutation coils in a Universal Motor 
Sub Title (in English)  
Keyword(1) Universal motor  
Keyword(2) Series motor  
Keyword(3) Commutation  
Keyword(4) Commutation inductance  
Keyword(5) Eddy current  
Keyword(6) Mutual induction  
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Keyword(8)  
1st Author's Name Shusuke Iwata  
1st Author's Affiliation Keio University (Keio Univ.)
2nd Author's Name Koichiro Sawa  
2nd Author's Affiliation Keio University (Keio Univ.)
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Speaker Author-1 
Date Time 2007-03-09 13:50:00 
Presentation Time 15 minutes 
Registration for EMD 
Paper # EMD2006-77 
Volume (vol) vol.106 
Number (no) no.580 
Page pp.13-16 
#Pages
Date of Issue 2007-03-02 (EMD) 


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