A synchronous machine model to analyze internal faults

Abstract

This paper presents a model of a synchronous machine which is capable of representing internal faults in the windings. Since the topology of the circuit representing the machine is altered in the presence of such faults, the two-reaction theory and the resulting Park Transformation cannot be readily applied in these situations. The model presented is derived in the phase domain. The model takes into account the type of winding, and the geometry of the stator and the rotor. The accuracy of the model is validated by comparing the results with recorded waveforms.