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Paper Abstract and Keywords
Presentation 2008-01-22 09:45
Multistep Charge Method by Charge Arrays for Space Satellite
Go Segami, Hiroaki Kusawake, Yasuhiro Shimizu, Minoru Iwasa, Koichi Kibe (JAXA) EE2007-53
Abstract (in Japanese) (See Japanese page) 
(in English) We studied the reduction in size and weight of Power Control Unit(PCU). In the study, we focused on the weight of Battery Charge Regulator(BCR) which occupied half of the PCU’s weight. And we found the multistep charge method by charge arrays enabled the reduction of BCR. As a result, the power to weight ratio of the developed PCU had dropped by half compared with the conventional PCU.
However this method decreases the state of charge (SOC) of the battery. We did the battery test, the battery simulator test and the numerical analysis to evaluate the descent of the state of charge. And we studied the effects of this method on the life time of the battery. We concluded that the multistep charge method by charge arrays enabled to charge to the same level of the SOC compared to the conventional constant current/ constant voltage (CC/CV) charge method for the low earth orbit satellite.
Keyword (in Japanese) (See Japanese page) 
(in English) satellite / power control unit / shunt / multistep charge method by charge array / lithium-ion / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 430, EE2007-53, pp. 53-58, Jan. 2008.
Paper # EE2007-53 
Date of Issue 2008-01-14 (EE) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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reproduction		 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 EE2007-53

Conference Information
Committee EE  
Conference Date 2008-01-21 - 2008-01-22 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EE 
Conference Code 2008-01-EE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Multistep Charge Method by Charge Arrays for Space Satellite 
Sub Title (in English)  
Keyword(1) satellite  
Keyword(2) power control unit  
Keyword(3) shunt  
Keyword(4) multistep charge method by charge array  
Keyword(5) lithium-ion  
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1st Author's Name Go Segami  
1st Author's Affiliation Japan Aerospace Exploration Agency (JAXA)
2nd Author's Name Hiroaki Kusawake  
2nd Author's Affiliation Japan Aerospace Exploration Agency (JAXA)
3rd Author's Name Yasuhiro Shimizu  
3rd Author's Affiliation Japan Aerospace Exploration Agency (JAXA)
4th Author's Name Minoru Iwasa  
4th Author's Affiliation Japan Aerospace Exploration Agency (JAXA)
5th Author's Name Koichi Kibe  
5th Author's Affiliation Japan Aerospace Exploration Agency (JAXA)
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Speaker Author-1 
Date Time 2008-01-22 09:45:00 
Presentation Time 25 minutes 
Registration for EE 
Paper # EE2007-53 
Volume (vol) vol.107 
Number (no) no.430 
Page pp.53-58 
#Pages 6 
Date of Issue 2008-01-14 (EE) 

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