A Finite Element Approach for the Calculation of Electrical Machine Parameters at High Frequencies

In this paper, finite element (FE) field models for the calculation of resistance, inductance and capacitance in high voltage machine windings are developed. The models take into account frequency-dependent phenomena such as the skin and proximity effects and the magnetic flux penetration into the iron core. The accuracy of the electrical parameters calculated with the field models was verified by means of a comparison with measurements in a high voltage motor. Also, a comparison between the FE models and an analytical method is presented. The electrical parameters calculated can be used for the development of machine winding models for switching transient studies in electrical machines.