Calculation of stator winding parameters to predict the voltage distributions in inverter fed AC machines

Abstract

Transmission line models are commonly used to calculate and predict the voltage distributions along the inverter-fed electrical machine windings. In this paper, frequency-dependent parameters of the stator windings are calculated via finite element and analytical methods. They are implemented in a transmission line model to predict the voltage distribution in a round wire stator winding induction machine. As a difference from the existent models, the laminated iron core effects are taken into account by an eddy current loss resistance. A metal-oxide varistor model is implemented in the cable-machine winding simulation model, and the voltage distribution is calculated. Comparisons with the measurements are given.