Design Optimization and Analysis of Radial-axial Flux-focusing Permanent Magnet Propulsion Motor
In order to improve magnetic load and torque density of permanent magnet motors,the radial-axial flux-focusing permanent magnet propulsion motor was proposed,which could improve the motor torque output capacity by using the flux-focusing ability of axially magnetized permanent magnets combined with Halbach array permanent magnets.Aiming at this new type of motor,this paper studied its structural characteristics in detail and analyzes the electromagnetic performance of the proposed motor structure using finite element.Firstly,the traditional and overhang structures were compared and analyzed,and the symmetrical overhang structure was optimized to further improve the torque characteristics.Finally,the initial radial overhang and optimized radial-axial overhang motors were simulated under no load and load conditions using the 3D elec-tromagnetic field model,the no load magnetic flux and the average torque are found to increase by 6%and 1.3%,and the torque pulsation is reduced by 0.4%,which further verified the superiority of the motor per-formance.
万方数据
维普
