Design and Mathematical Modeling of Gearless SMC Flux Reversal Motor

Abstract

This paper considers the design of a three-phase gearless flux reversal machine (FRM) with permanent magnets (PM) mounted on the stator. Its stator magnetic core is made of a solid soft magnetic composite material (SMC) with a slot for laying the winding in the middle. 48 magnetic poles are located on the surface of each stator tooth, while the rotor has 24 teeth. This paper describes the mathematical model and the results of the performance calculation of the three-phase SMC FRM operating in motoring mode. Finally, comparison of the SMC FRM with the characteristics of the conventional surface mounted permanent magnet machine (SM-PMSM) made of laminated steel is performed. For fair comparison, both the SMC FRM and SM-PMSM have the same outer stator diameter and approximately the same volume.