Practical application of stress analysis of stator coil-end portion of turbine generator

Takayuki Mizumoto
Generator & Motor Dept., Fuji Electric Co., Ltd.

Abstract

Supporting structure of turbine generator stator coil end require enough mechanical strength for Lorentz force due to the short circuit current.
Because large-sized rotating machines production and testing prototype is not easy, the design of supporting structure needs the evaluation by the coupling analysis of the magnetic field analysis and the stress analysis.
In this paper, we will introduce an example of the automated coupled magnetic-field and stress analysis by JMAG on a turbine generator stator coil end.

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