Determination of the inductances of a salient-pole synchronous machine without damper winding based on the voltage equation of a single coil in the stator winding

An improved model for calculating the current distribution of salient-pole synchronous machines with internal faults in the stator winding is established using the multi-loop method. For this purpose, a good knowledge of the time-depending inductances is necessary. In this paper, a calculation method is presented to determine the mutual and self-inductances of the stator coils as well as the mutual inductances between the stator coils and the field winding of a salient-pole synchronous machine without damper winding. The method presented here considers the analytical calculation of the magnetic flux density based on the field excitation and the time-depending air-gap permeance function of the salient-pole synchronous machine.