Numerical anlysis of axial-radial flux type fully superconducting synchronous motor

An axial-radial flux type fully superconducting synchronous motor (ARFTFSSM) is presented, which will have important applications in ship propulsion system. First, 2D mathematics model of the radial flux type superconducting synchronous motor(without axial field coils ) is established at no load and load, the magnetic field distribution of the motor operating under rated speed (250r/min) is analyzed by use of 2D FEM. Then, at the same speed, changing the MMF of axial field coils, the variations of magnetic field and flux density in the air-gap of ARFTFSSM are analyzed by using 3D FEM. Furthermore, the experiments about the prototype are performed at no load. Both numerical calculation and experimental results show that the no-load flux density in the air gap can be increased about 8% than that of the only radial flux type superconducting synchronous motor under the same conditions. And the obtained conclusions are helpful for more study on large capacity fully superconducting synchronous motor.