Exact Analytical Solution Of The Currents Of A Threephase Six-step Inverter/three-phase Induction Motor System [articol]

Abstract

In this paper analytical solutions of the currents when a three-phase, six-step voltage-source inverter (VSI) is feeding an induction motor (IM), are presented. Explicit analytical expressions of the steady-state current of the motor and of the input current of the inverter and of its switching elements are derived instead of using numerical solution methods. To check the validity of the presented analytical solutions, the results obtained of the motor currents and of the currents of the switching elements of the inverter were compared with previously published results, and the two sets of results were found to be identical.