Abstract
The permanent magnet synchronous motor (PMSM) is widely used as the driving device for electric vehicles, robots and other systems due to their high-power density and wide speed range. In order to improve the reliability of PMSM, redundant structure can be used. In this paper, a topology of dual-redundant axial flux PMSM (DR-AFPMSM) and a analytical method for magnetic coupling characteristics was proposed. To reduce the axial length and the magnetic coupling between the two redundancies, the middle rotor disk consists of a set of permanent magnets (PMs) embedded in a coreless skeleton. From the perspective of inductance and armature reaction, the magnetic characteristics of each redundancy and the magnetic coupling between redundancies have been analyzed by 3-dimensional finite element analysis (3D-FEA) in this paper. Tests under different conditions, namely no-load, load, and phase-to-phase short-circuit have been carried out. Results show that the prototype meets the design requirements and the proposed structure can effectively decrease the magnetic coupling between the two redundancies.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
