NDLI: Study on eddy current loss and heat-transfer character of stator windings in synchronous generator

Content Provider	IEEE Xplore Digital Library
Author	Li Weili Chai Feng Zhao Fen
Copyright Year	2008
Description	Author affiliation: Sch. of Electr. & Electron. Eng., Harbin Univ. of Sci. & Technol., Harbin (Li Weili; Chai Feng; Zhao Fen)
Abstract	The eddy loss of stator windings in synchronous generator was calculated using analysis method and finite-element method, the distributed characteristic of stator windings temperature field was studied. In this paper, the distribution characteristic of eddy current of windings in rectangular slot was analyzed first by using analytical method, and the mathematical representations of eddy current were presented. Taking a 200 MW turbo-generator as an example, the resistance enhancement coefficients and the value of eddy loss of stator windings in inphase and out phase slot were determined. The 2-dimensional electromagnetic field calculation model of one stator slot with windings was established, and the distribution of current-density in radius direction was calculated by using finite element method. Then resistance enhancement coefficients and eddy loss in strands at different position in radical direction were determined, which were also compared with that from analytical method. Based on the electromagnetic field computation, the 3-dimensional temperature field mathematical model of stator windings with corrugated plate was established. The effect of eddy loss on windings temperature distribution in inphase and out phase slot were analyzed, some useful conclusions were achieved and should be benefits to the design of turbo-generator.
Starting Page	479
Ending Page	484
File Size	1268608
Page Count	6
File Format	PDF
ISBN	9781424438266
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-17
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	IEEE Consumer Electronics Society(CES)
Subject Keyword	Eddy currents Stator windings Synchronous generators Temperature Stator cores Finite element methods Electromagnetic fields Magnetic analysis Electromagnetic modeling Copper
Content Type	Text
Resource Type	Article

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