Sensorless Control of a 6-phase Induction Machine

Abstract

In this thesis, the challenges regarding sensorless operation were presented and analyzed, especially in the low-speed region. The performance of the motor control is highly depending on the estimation of the stator resistance, but with correction algorithm, it is possible to cross zero speed and in addition drive at relatively low speed. On the other hand driving at zero speed or at low speed for a long time is still problematic and improvements or different methods need to be investigated.