Model-based loss minimization for DC and AC vector controlled motors including core saturation

Abstract

A generalized d-q loss model applicable to permanent magnet synchronous motors, synchronous reluctance motors, induction motors and DC motors is presented. A model-based loss minimization algorithm of easy implementation is proposed, based on the loss model. Core saturation is taken into account. The paper reviews the loss-minimization schemes previously presented in the literature for specific types of motor. It shows how all these can be derived from the generalized model and the algorithm presented here. Results are compared with those reported in the literature. Finally, experimental results from an interior permanent magnet synchronous motor are presented.