Design and optimization of a new axial flux permanent magnet hysteresis motor with simple structure

Purpose This paper aims to proposes a new topology of axial flux permanent magnet hysteresis motor with a single-disc rotor. Design/methodology/approach In this paper, first, the main equations of the permanent magnet hysteresis motor with a single-disc rotor design are presented. Then, the permanent magnet hysteresis motor with single-disc rotor has been precisely simulated by finite element method using the Preisach model (for modeling semi-hard material). Subsequently, the diameters of the permanent magnet and semi-hard material have been optimized by sensitivity analysis in finite element method. Findings By adding a ring magnet to axial flux hysteresis (semi-hard magnetic material) motor, ability to increase torque in steady state is provided. In the starting state, the semi-hard material produces torque while in the steady state, the torque is produced by both the semi-hard material and the permanent magnet. The results show that due to the proper combination of the permanent magnet and semi-hard material, and choosing optimum diameters for them, the resultant torque is desirably high for both steady and starting states. Originality/value The authors hereby attest that the research paper they have submitted is the result of their own independent and unique labor. All of the sources from which the thoughts and passages were derived have been properly credited. The work has not been submitted for publication anywhere and is devoid of any instances of plagiarism.