Operating Characteristics of Adjustable-Field Permanent Magnet Motors with 3D Magnetic Paths and Asymmetric Magnet Arrangement

Yutaro Hiyoshi
Automotive Development Section, Technical Research & Development Center,
Yamaha Motor Co., Ltd.

Abstract

This presentation describes an adjustable field magnetization PM motor with a 3D magnetic path and asymmetric magnet arrangement, which aims to achieve both high-torque operation and high-efficiency operation in the high-speed and low-torque regions. The characteristics of the adjustable field magnetization and the optimum operating parameters assuming the adjustable field magnetization are confirmed by 3D-FEA. A prototype motor based on the proposed method was fabricated, and the motor characteristics and the effect of adjustable field magnetization were verified by load tests.

Operating Characteristics of Adjustable-Field Permanent Magnet Motors with 3D Magnetic Paths and Asymmetric Magnet Arrangement

Operating Characteristics of Adjustable-Field Permanent Magnet Motors with 3D Magnetic Paths and Asymmetric Magnet Arrangement

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