IEEJ Transactions on Industry Applications
Online ISSN : 1348-8163
Print ISSN : 0913-6339
ISSN-L : 0913-6339
Paper
Study on Vibration by Electromagnetic Force in the End Portion of Large Capacity Cylindrical Synchronous Machines
—Improvement of Electromagnetic Force Estimation and Verification of Degradation on Coil Insulation—
Susumu NaganoTadashi TokumasuMasafumi FujitaYoshiyuki InoueMasayuki IchimonjiHitoshi KatayamaDaisuke HiramatsuTanzo Nitta
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2007 Volume 127 Issue 1 Pages 17-25

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Abstract
A new electromagnetic force analyzing method in end-winding is provided and evaluated by comparing to 3D- FEM electromagnetic analysis. Additionally, estimating method of end-winding vibration on load is suggested by measured data at factory test. Moreover, evaluating method for insulation degradation after operation is offered for large capacity cylindrical synchronous machines, where end-winding portion is the longest and electromagnetic forces on it is the greatest of all rotating machinery.
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© 2007 by the Institute of Electrical Engineers of Japan
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