Electromagnetic Analysis of a Modular Flux-Switching Permanent-Magnet Motor Using Finite-Element Method

Abstract

Abstract-This paper proposes a new 3-phase flux-switching permanent-magnet (FSPM) motor termed as modular FSPM (M-FSPM) motor, for high reliability applications. Due to PMs in the stator, the proposed motor offers high efficiency, simple and robust rotor structure, and good thermal dissipation conditions. The key is the new motor topology which incorporates the concept of faulttolerant teeth to provide the desired decoupling among phases. By using finite element method, the proposed M-FSPM motor is analyzed as compared with the existing fault-tolerant FSPM (FT-FSPM) motor. The results show that the proposed M-FSPM motor not only retains the merits of high power density, strong mechanical integrity, good immunity from thermal problem and high torque capability, but also offers lower torque ripple, higher average torque and lower cost than the existing FT-FSPM motor. A proposed M-FSPM motor is designed and built for exemplification. Experimental results of the prototype are given to confirm the validity of the proposed motor.

Field-Excited Flux Switching Motor Design, Optimization and Analysis for Future Hybrid Electric Vehicle Using Finite Element Analysis

“…Besides, the DC motor can be simply controlled based on the orthogonal disposition of field and armature mmf. However, the maintenance problem due to the use of commutator and brush, DC drive encounters renders it unsuitable for HEV and less reliable for maintenance-free drive [3][4][5][6].…”

Design and Analysis of Permanent Magnet Motor With Movable Stators

“…Magnitudes of the magnetomotive force, flux density and permeance coefficient all depend on the air gap that is related to the stator geometry. The permeance coefficient is expressed by [12] …”

“…A direct drive motor with rare earth magnets that forms the outside of the motor was designed by using finite element electromagnetic field analysis [11]. A modular flux-switching permanent-magnet motor was analyzed and compared with fault-tolerant motors [12]. Both simplified and exact analytical models [13] were applied to predict magnetic field distribution and electromagnetic performances of parallel double excitation and spoke-type permanent magnet motors.…”