Study of electrical characteristics of the ball bearing motor

Moyssides Paul, G; Hatzikonstantinou, Paul

dc.contributor.author	Moyssides Paul, G	en
dc.contributor.author	Hatzikonstantinou, Paul	en
dc.date.accessioned	2014-03-01T01:08:08Z
dc.date.available	2014-03-01T01:08:08Z
dc.date.issued	1990	en
dc.identifier.issn	0018-9464	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10304
dc.subject	Electric Motor	en
dc.subject	Magnetic Field	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Physics, Applied	en
dc.subject.other	Bearings--Ball	en
dc.subject.other	Ball Bearing Motors	en
dc.subject.other	Electromagnetic Interactions	en
dc.subject.other	Electric Motors	en
dc.title	Study of electrical characteristics of the ball bearing motor	en
heal.type	journalArticle	en
heal.identifier.primary	10.1109/20.54012	en
heal.identifier.secondary	http://dx.doi.org/10.1109/20.54012	en
heal.language	English	en
heal.publicationDate	1990	en
heal.abstract	The electrical characteristics of the ball bearing electric motor are studied for applied steady currents ranging from 43.5 to 70.15 A. It is found that the ball bearing behaves like a motor when it starts self-rotating meaning that the shaft and inner race of the pair of the ball bearing system start rotating by themselves without the help of any external agent, but with a small efficiency at high currents. During self-rotation, the motor's counterelectromotive force depends on the angular velocity of the shaft and inner race. The ball bearing's behavior at low currents is also explained when it is not self-rotating, (i.e., rotating with the help of a conventional motor). In the latter case, the motor does not behave like a generator. A theory, based on the electromagnetic interactions developed within each ball, is proposed to explain the action of the ball bearing as a motor. These interactions are caused by the ball's primary currents and magnetic fields and the effects of the induced magnetic field from the current of the motor's shaft.	en
heal.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC	en
heal.journalName	IEEE Transactions on Magnetics	en
dc.identifier.doi	10.1109/20.54012	en
dc.identifier.isi	ISI:A1990DN49700006	en
dc.identifier.volume	26	en
dc.identifier.issue	4	en
dc.identifier.spage	1274	en
dc.identifier.epage	1281	en