Paper Abstract and Keywords |
Presentation |
2020-12-04 15:00
Sliding Current Characteristics brought about by Changes in the Silver Content of Silver Graphite Brushes. Naoki Fukuda, Ryosuke Kudo, Yuki Saito, Yuki Kawashima, Yusuke Takada, Koichiro Sawa, Takahiro Ueno (NIT) EMD2020-22 Link to ES Tech. Rep. Archives: EMD2020-22 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Sliding contact is a mechanism for the transfer of electrical current between stationary and moving parts. To date, slip ring systems have mainly been used to provide the excitation mechanism required by turbine generators. However, more diverse systems are now needed in the current clean energy setting. For example, the slip ring systems used in wind power generators must operate at low temperatures. In contrast, automotive alternators operate at high temperatures. Moreover, slip ring systems are also used in applications that require the transmission of electrical signals, such as radar antennae and computed tomography. In such cases, silver (Ag)–graphite brushes and noble metal slip rings are often used, because they are regarded as effective at reducing contact voltage drop, even in harsh environments.
In this study previously, a 20-hour slide experiment to determine the contact voltage drop and amount of wear characteristics of Ag-graphite brushes and silver-gold (Ag-Au) slip rings was reported.
In the present paper, contact voltage drop-brush current (V-I) characteristic tests were conducted using Ag-graphite brushes (Ag content of the coating were 50, 70, and 90 wt%), and noble metal-coated slip rings (plated with silver and gold) to determine the electrical effects of contact voltage drop. The V-I characteristics revealed linearity in all the silver content brushes. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Silver Graphite Brush / Noble Coated Slip Ring / V-I Characteristic / φ-θ Theory / Sliding Surface Temperature / / / |
Reference Info. |
IEICE Tech. Rep., vol. 120, no. 275, EMD2020-22, pp. 24-29, Dec. 2020. |
Paper # |
EMD2020-22 |
Date of Issue |
2020-11-27 (EMD) |
ISSN |
Online edition: ISSN 2432-6380 |
Copyright and 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 |
EMD2020-22 Link to ES Tech. Rep. Archives: EMD2020-22 |
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) |
Sliding Current Characteristics brought about by Changes in the Silver Content of Silver Graphite Brushes. |
Sub Title (in English) |
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Keyword(1) |
Silver Graphite Brush |
Keyword(2) |
Noble Coated Slip Ring |
Keyword(3) |
V-I Characteristic |
Keyword(4) |
φ-θ Theory |
Keyword(5) |
Sliding Surface Temperature |
Keyword(6) |
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Keyword(7) |
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Keyword(8) |
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1st Author's Name |
Naoki Fukuda |
1st Author's Affiliation |
Nippon Institute of Technology (NIT) |
2nd Author's Name |
Ryosuke Kudo |
2nd Author's Affiliation |
Nippon Institute of Technology (NIT) |
3rd Author's Name |
Yuki Saito |
3rd Author's Affiliation |
Nippon Institute of Technology (NIT) |
4th Author's Name |
Yuki Kawashima |
4th Author's Affiliation |
Nippon Institute of Technology (NIT) |
5th Author's Name |
Yusuke Takada |
5th Author's Affiliation |
Nippon Institute of Technology (NIT) |
6th Author's Name |
Koichiro Sawa |
6th Author's Affiliation |
Nippon Institute of Technology (NIT) |
7th Author's Name |
Takahiro Ueno |
7th Author's Affiliation |
Nippon Institute of Technology (NIT) |
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Speaker |
Author-1 |
Date Time |
2020-12-04 15:00:00 |
Presentation Time |
25 minutes |
Registration for |
EMD |
Paper # |
EMD2020-22 |
Volume (vol) |
vol.120 |
Number (no) |
no.275 |
Page |
pp.24-29 |
#Pages |
6 |
Date of Issue |
2020-11-27 (EMD) |
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