DocumentCode :
1029240
Title :
Forces on the End Winding of Turbine-Generators II - Determination of Forces
Author :
Tegopoulos, J.A.
Author_Institution :
Westinghouse Electric Corporation
Issue :
2
fYear :
1966
Firstpage :
114
Lastpage :
122
Abstract :
Electromagnetic forces on the end coils of turbine-generators, following a 3-phase short circuit from no load, are determined for different positions of the rotor, ¿ts, in the first cycle. Forces are given by F = Il ×B. Cylindrical coordinates are used. Flux density on the field points on the coils will result from stator alternating and direct currents, rotor transient currents, and, indirectly, all currents which are induced in a nonmagnetic retaining ring. Flux densities interact with total current in each coil to give forces. The total torque on the end winding is calculated at different ¿ts, and its maximum is determined. Radial forces acting on both layers are analyzed. Hence, the most severe load on the supports is determined. The normal forces on the coils are calculated.
Keywords :
Adders; Circuits; Coils; Conductors; Continuous wavelet transforms; Machinery; Magnetic fields; Rotors; Stator windings; Torque;
fLanguage :
English
Journal_Title :
Power Apparatus and Systems, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9510
Type :
jour
DOI :
10.1109/TPAS.1966.291547
Filename :
4072996
Link To Document :
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