듀얼 클러치 변속기용 탈 희토류 영구자석 동기전동기 설계

Abstract

Rare earth Permanent Magnet (PM) has been widely used in the electric motor due to the high magnetic flux density. However, minimizing the use of rare-earth permanent magnet in the electric motor is needed because of the limited supply and price fluctuation of rare-earth permanent magnets. In this paper, a method is suggested to replace the Surfaced-mounted Permanent Magnet Synchronous Motor (SPMSM) using neodymium magnet with Concentrated Flux Synchronous Motor (CFSM) using the ferrite magnet as keeping the same performance. To achieve this, various design parameters such as the width of PM, the thickness of PM, fastening part are adjusted. In result, although a 47% in volume increases compared to SPMSM, electrical characteristic under the same load condition is similar and the torque ripple has been reduced by 7%.