Integrated Magnetic-Geared Machine With Sandwiched Armature Stator for Low-Speed Large-Torque Applications

This paper proposes a novel integrated magnetic-geared machine for low-speed large-torque applications. By embedding the armature windings into the air slots adjacent to the modulating segments, a complex component which can serve as the armature stator and the modulating stator simultaneously is achieved. Therefore, the proposed integrated machine is with simpler mechanical structure than the existing integrated machine. Since the permanent magnets on the two rotors are all effectively involved in the energy conversion process, high torque density can be achieved. Moreover, the proposed machine exhibits high power factor due to the week armature-excited field.