Energy Efficient Control of Synchronous Machines in Deep Field-Weakening Operation Including Saturation Effects

In this paper, a generic numerical framework for considering saturation in the reference current generation regarding energy optimization in deep field weakening for synchronous machines with strong saliencies is proposed. It is based on the geometrical interpretation of the optimization problem in the flux plane where the saturation effect is considered by using differential inductances. The algorithm is validated through Finite Element Analyses in a PMa-SynRM and a RSM.