Extension of the Maximum Power Region of Doubly Salient Variable Reluctance Motors

This paper develops a new command strategy, ensuring the extension of the maximum power region of Doubly-Salient Variable Reluctance Machines when the phase switching control angles reach their limits. This new mode is often called Incomplete Demagnetization Operating Mode. The interest of this methodology is that the current in phase of demagnetization does not come back to zero. A new control parameter corresponding to minimum current is introduced when the optimization of the maximum possible power operation of the doubly-salient SRM. This concept is applicable to the full wave mode feeding.