Selection of Shared Rotors for Magnetic Geared Motor to Reduce Permanent Magent Usage

This paper introduces the design method for the shared rotor of a Magnetic Geared Motor (MGM). The MGM is a device that combines magnetic gears and a motor. Due to the substantial usage of permanent magnet, research has been conducted to reduce the amount of permanent magnet usage while maintaining the same output. The proposed method is applicable to the SPM type, and a phenomenon of reduced iron loss associated with the decrease in the core width of the shared rotor has been observed. Therefore, a comparison was conducted between an improved model with reduced core width and an IPM type, which minimizes iron loss. Through this comparison, the rotor configuration most suitable for the shared rotor of the magnetic geared motor was determined. The comparison models were analyzed using 2D-FEA.