The magnetic circuit characteristics by Halbach array of permanent magnet and the application to the high speed motor-generator

영구자석의 Halbach 배열에 의한 자기회로 특성과 초고속전동발전기에의 응용

Klaus Halbach has suggested the novel permanent magnet array using advanced analytical approaches in 1979. We utilize this Halbach array to compose the field system of high speed motor-generator. The ferro-magnetic materials of the electric machines cause the fatal energy loses in high frequency. But Halbach array enables to make the various field distribution without ferro-magnetic materials. Therefore, the energy loses can be reduced. This paper presents the magnetic characterics of Halbach array and the application to the motor-generator.