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In this paper, a simple non-linear magnetic analysis- based optimum design of axial-flux permanent magnet (AFPM) machines is presented, which realizes the maximization of torque density while keeping motor volume. The proposed analysis consists of the geometric-flux-tube-based equivalent-magnetic-circuit model. The model includes saturable permeances taking into account the local magnetic saturation...
This paper proposes a simplified and fast evaluation method of the drive characteristics of claw-pole type PM stepping motors whose dimensions are given. The proposed method consists of a geometric flux-tube-based non-linear magnetic analysis and a dynamic simulator based on an analytical expression of the magnetizing curves obtained from the non-linear magnetic analysis. The proposed method allows...
This paper presents a novel multi-pole permanent magnet synchronous machine for the traction applications in which both high torque capability at low speed and wide speed operating range are required. The origin of the proposed machine construction is from a hybrid stepper machine, but the uniqueness lies in the utilization of soft magnetic composites (SMC) as magnet flux bypass core and filed-pole...
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