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A Novel Multi-pole Permanent Magnet Synchronous Machine with SMC Bypass Core for Magnet Flux and SMC Field-pole Core with Toroidal Coil for Independent Field St
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| Author(s) |
KANO Yoshiaki; POLLOCK Charles; KOSAKA Takashi; MATSUI Nobuyuki |
| Abstract |
This paper presents a novel multi-pole permanent magnet synchronous machine for the traction applica-tions 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 core with toroidal coil. Because of the magnetically three-dimensional isotropic nature of SMC, the SMC-bypass core for magnet flux makes it possible to avoid unnecessary magnet mmf loss due to a passage through inter-lamination airgap. For the same reason, the SMC-field pole can deliver three-dimensional flux and the mmf of the fitted field toroidal coil can theoretically contribute to providing independent field strengthening/weakening capability. First, the rough design of the proposed machine based on an equivalent magnetic circuit analysis is described. Second, the performance prediction and the design refinement using 3D-FEM are demonstrated. |
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| Filename: | 0596 |
| Filesize: | 560.8 KB |
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| Type |
Members Only |
| Date |
Last modified 2006-02-08 by System |
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