Design and Analysis of a New Flux Switching Machine with Double-Sided PM Excitation

This study introduces an innovative double-sided permanent magnet flux-switching machine (DS-PMFSM), featuring a stator incorporating both consequent-pole and spokearray permanent magnets (PMs), complemented by a rotor equipped with consequent-pole PMs. This configuration enables the DS-PMFSM to harness synergistic field working harmonics within the air-gap flux-density distribution, enhancing torque density. The topology and operational principles of the DS-PMFSM are first elucidated. A simplified magnetomotive force (MMF)-permeance model is employed to examine flux-field harmonics arising from the dual-PM excitation. Results show that harmonic superposition between alternating-pole and spokearray PM markedly enhances torque density. Furthermore, the superiority of proposed structure is validated via comparative electromagnetic performance analysis against three conventional motor topologies. Simulations reveal that the dual-PM hybrid excitation topology achieves an optimal balance between elevated torque output and minimized ripple via synergistic harmonic field modulation, offering novel insights into high-torque-density flux-switching motor design and field-modulation theory applications.