Synchronisation problem of high performance reluctance motors

The paper reports an investigation of the synchronisation problem of three phase high performance reluctance motors. This problem stems from the fact that these motors can have extremely high reactance ratio and hence a significant pull-out torque. While this is a welcomed property from a steady state stability point of view, it can make the process of synchronisation a difficult task. To carry out this investigation a rigorous state space model in the original phase values reference frame was developed and simulated. The developed model takes into consideration the effect of torsional dynamics. This is augmented by a steady state analysis based on Park’s two-axis reference frame.