Performance Evaluation of an Axial‐Type Magnetic‐Geared Motor

Abstract

This paper first proposes an axial-type magneticgeared motor that uses permanent magnets only in the high-speed rotor. The operating principle of this motor is described and the torque-speed characteristics are computed by using three-dimensional finite element method analysis. In order to increase the torque density, a novel axial-type magnetic-geared motor with permanent magnets on the high-speed rotor and stator is also proposed. The torque-speed characteristics are compared to the original model with permanent magnets only on the high-speed rotor. Finally, the computed torque-speed characteristics are verified against measurements on a prototype. C⃝ 2015 Wiley Periodicals, Inc. Electr Eng Jpn, 194(1): 48-59, 2016; Published online in Wiley Online Library (wileyonlinelibrary.com).