Design of synchronous reluctance motors with improved power factor

Synchronous reluctance motor (SynRM) have rather poor power factor. This paper investigates possible methods to improve the power factor (pf) without impacting its torque density. The study found two possible aspects to improve the power factor with either refining rotor dimensions and followed by current control techniques. Although it is a non-linear mathematical field, it is analysed by analytical equations and FEM simulation is utilized to validate the design progression. Finally, an analytical method is proposed to enhance pf without compromising machine torque density. There are many models examined in this study to verify the design process. The best design with high performance is used for final current control optimization simulation.