Improved Equivalent-Circuit Model for a Permanent-Magnet Motor

The presented permanent-magnet motor model can more accurately calculate the motor characteristics, compared to the conventional basic circuit model. On the other hand, the model is much simpler then the comprehensive models, such as detailed circuit motor models, or finite element models. The improvements in the treated model particularly regard a better description of the inductive behaviour of the rotor windings (self-inductances and magnetic coupling). The modelling approach is applied on a PM-motor with three rotor windings, and one permanent magnet pole pair in the stator.