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This paper investigates the postfault operation of a novel six-phase double-stator axial-flux permanent-magnet machine with detached winding connection. In previous research, this configuration was found to be superior to existing winding connection except that its unbalanced magnetic force in the postfault operation cannot be ignored. In this paper, an axial magnetic force balancing method (AMFBM)...
Permanent magnet Vernier (PMV) machines have attracted more and more attention for their merits of high torque density and simple structure. And principle of electromechanical energy conversion is the most common way to investigate the PMV machine by calculating back EMF and electromagnetic torque. In this paper, a new perspective on the mechanism of PMV machines based on the Maxwell stress tensor...
This paper studies the magnetic stress and vibration characteristic of the permanent magnet assisted synchronous reluctance machine (PM-SynRM). Firstly, the frequency and spatial orders of radial stress are investigated by analytical equations. Then, two PM-SynRMs are designed, and their open-circuit and armature magnetic stresses are calculated by finite element method (FEM) and compared with the...
This paper deeply discusses the effect of eccentricity, including static, dynamic and mixed eccentricity on the performance of FSCW SPM servo motor analytically and using finite element analysis (FEA) to validation. The effect of different kinds of eccentricity on magnetic field including magnet field and armature reaction field is described with three factor called modulation factor. The frequency...
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