영구자석 삽입형 Claw Pole Machine 의 회전자 최적 설계

When permanent magnet is embedded in the rotor of claw pole machine, the magnetic saturation of rotor core is largely reduced. As a result of the reduction of magnetic saturation, reluctance is reduced. Thus, larger Back-EMF is obtained due to the increase of flux linkage. In this paper, C-core which is the simplified motor is used to define the phenomena. The merit to attach permanent magnet in the rotor of claw pole machine is confirmed through 3D-FEA. Finally, permanet magnet size is optimized to obtain the maximum Back-EMF increase.