Analysis on Rotor Vibration Characteristics under Dynamic Rotor Interturn Short Circuit Fault in Synchronous Generators

A dynamic rotor interturn short circuit fault may occur during synchronous generator operation. However, there is no method to analyze the generator’s characteristics under and identify fault. In order solve this problem, a new analysis model creatively proposed through mathematical derivation. Firstly, vibration mechanical response magnetic pull excitation are theoretically analyzed. addition, finite element modeling for proposed, an experimental device designed. The of established obtain rotor’s unbalanced pulls responses by calculation. Finally, vibrations tested on CS-5 prototype generator. validity verified calculation experiment. This paper provides theoretical support diagnosis