Numerical Simulation on Electromagnetic Multi-Physical Field for High Power Density HTS Motor

Compared with conventional electrical motors, HTS motors due to the higher electromagnetic loading have the advantages of high power density. With the continuous development of HTS and refrigeration technology, HTS motor is gradually applied in the propulsion system of ships, and has broad application prospects. In this paper, firstly we have built a electromagnetic model for high power density HTS ship propulsion motor based on the ANSYS software according to the design, the ReBCO rotor coils rated working current is set to 310 A by reserving a safety margin of 40% when the airgap flux density is 2.3 T, which is obtained by optimized stepped geometry magnet. It has been studied the performances of temperature varying and mechanical strength of HTS rotor through numerical simulation. Finally, the magnetic coil prototype is fabricated to validate the correctness of the proposed analysis and design methods.