ウエダ　ヨシオ   Ueda Yoshio   上田　良夫    所属   追手門学院大学  理工学部 電気電子工学科    職種   教授
言語種別	英語
発行・発表の年月	2008/01
形態種別	論文
査読	査読あり
標題	Suppression of braking torque produced by a passive magnetic bearing using eddy current
執筆形態	共著・編著（代表編著を除く）
掲載誌名	IEEJ Transactions on Fundamentals and Materials
掲載区分	国外
巻・号・頁	128(6)
著者・共著者	Takeshi Takanashi,Yusuke Ohtsuka,Yoshio Ueda,Masahiro Nishikawa
概要	In this paper, characteristics of restoring force and braking torque for a passive magnetic bearing which has a rotation ring and a the permanent magnets were studied. The restoring force increases with the rotation speed and the ring displacement. On the other hand, the braking torque is saturated with respect to the rotation speed and is constant regardless of the ring displacement. In order to improve the characteristics of the magnetic bearing, we proposed auxiliary magnet for changing distributions of the magnetic flux and the current density on the ring. As a result the braking torque is decreased by 27% and the restoring force is increased by 30%. © 2008 The Institute of Electrical Engineers of Japan.
DOI	10.1541/ieejfms.128.379
ISSN	0385-4205/1347-5533