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This paper presents thermal analysis of a water-cooled dual-stator axial-flux permanent magnet (AFPM) machine with focus on the sandwiched rotor. The rotor of the machine is featured by combined rectangle-shaped magnets. Firstly, the eddy current losses in the PM are calculated and analyzed. Secondly, lumped-parameter and FE thermal models are established to calculate the temperature distribution...
This paper mainly focuses on the analysis of the eddy current loss in permanent magnet (PM) of the surface-mounted PM vernier machine (SPMVM). The eddy current losses under open-circuit, armature reaction and load conditions are detailed investigated by the analytical method and finite-element analysis (FEA). The influence of the pole ratio, which is defined as the ratio of the rotor PM pole-pairs...
This paper proposes a novel detached winding configuration for asymmetric six-phase double-stator axial flux permanent magnet machines aiming at fault-tolerant applications. Due to the machine unique double-stator structure, the six-phase winding can be separated into two three-phase windings with 30 electrical degree angle shift and arranged in different stators, which is the basic idea of the detached...
This paper proposes a novel detached winding for 6-phase double-stator inner-rotor axial flux PM machines. The connection of detached 6-phase winding is firstly given, followed by a comprehensive comparison with the conventional 6-phase winding in aspect of the winding factor, EMF and inductance, et al. Comparison of performance including rotor eddy current loss, torque ripple and rotor unbalanced...
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