Document Type : Review Article
Authors
1 Niroo Research Institute (NRI)
2 2Department of Electrical and Computer Engineering, University of Tehran, Tehran, Iran
Abstract
Increasing loading without comparable change in the size of synchronous generators, causes end-winding force estimation become important. Therefore, design of an appropriate support to protect windings deterioration and damages by the above mentioned forces is critical. In slot-embedded portion of coils, the forces could be adjusted by teeth and slot wedges. Normally, the ends of coils have no external support and it is necessary to provide it. Synchronous generators have been considered reliable if accurate end winding forces are evaluated and taken into account in the design process of the external support. The topic based on the current literature is reviewed. Structure of end windings and different analytical and numerical techniques for forces estimation are discussed. The current state of the art is reviewed and more successful developments are introduced. At the end, the area of research which needs more attention in the future to advance the subject is identified.
Keywords
Main Subjects
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