Design of Axial and Radial Flux HTS Permanent Magnet Synchronous Motor´s Rotor

Most of superconducting motors use the superconducting coils as the excitation coils which are located in the rotor. But its cool system is complex and the cool temperature is lower than 60 K. A novel axial-radial flux HTS (high temperature superconducting) motor is presented with the liquid nitrogen cool, its armature winding in stator is superconducting coils, the excitation winding in cover is superconducting coils, permanent magnets is located in the rotor. Its cool system is simple, and easy to implement. But the electromagnetic parameters are required to ensure the armature current can flow in the winding with low voltage. Through the prototype test with the copper winding instead of the superconducting winding, a novel rotor structure fit for the HTS motor with superconducting armature winding is presented.