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Paper Abstract and Keywords
Presentation 2020-12-04 13:05
Observation of arc discharges occurring between commutator and brush Simulating a DC motor by means of a high-speed camera
Ryosuke Sano, Junya Sekikawa (Shizuoka Univ.) EMD2020-18
Abstract (in Japanese) (See Japanese page) 
(in English) Observed results of arc discharges generated between the brush and commutator are reported during arc duration. The arcs were observed by a high-speed camera. The brush and commutator were installed to an experimental device that simulates rotational motion of a real DC motor. The aim of this report is to investigate the occurring position, dimensions, and moving characteristics of the arc discharges by means of direct observation of them. Time evolutions of the arc voltage and current are measured, simultaneously. The arc discharges are generated when an inductive circuit is interrupted. Circuit current before interruption was 4A. The metal graphite or graphite brush and a copper commutator are used. The results show that the position, dimensions and motion of arc discharges are successfully obtained and the dimensions depend on the copper content on the cathode surface.
Keyword (in Japanese) (See Japanese page) 
(in English) Arc discharge / Sliding contacts / DC motor / High-speed camera / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 275, EMD2020-18, pp. 1-6, Dec. 2020.
Paper # EMD2020-18 
Date of Issue 2020-11-27 (EMD) 
ISSN Print edition: ISSN 0913-5685  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)
Download PDF EMD2020-18

Conference Information
Committee EMD  
Conference Date 2020-12-04 - 2020-12-04 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) International Session IS-EMD2020 
Paper Information
Registration To EMD 
Conference Code 2020-12-EMD 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Observation of arc discharges occurring between commutator and brush Simulating a DC motor by means of a high-speed camera 
Sub Title (in English)  
Keyword(1) Arc discharge  
Keyword(2) Sliding contacts  
Keyword(3) DC motor  
Keyword(4) High-speed camera  
1st Author's Name Ryosuke Sano  
1st Author's Affiliation Shizuoka University (Shizuoka Univ.)
2nd Author's Name Junya Sekikawa  
2nd Author's Affiliation Shizuoka University (Shizuoka Univ.)
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Date Time 2020-12-04 13:05:00 
Presentation Time 25 
Registration for EMD 
Paper # IEICE-EMD2020-18 
Volume (vol) IEICE-120 
Number (no) no.275 
Page pp.1-6 
#Pages IEICE-6 
Date of Issue IEICE-EMD-2020-11-27 

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