Multiphase permanent magnet motors are widely used in high-performance and high-reliability propulsion systems，such as naval electric propulsion，because of their advantages of high efficiency，high power density and small size，as well as the ability to realize low-voltage high-power drive. In this paper，the electromagnetic characteristics and control scheme of dual three-phase permanent magnet motor are studied，the simulation results of the magnetic field，current，electromagnetic force and electromagnetic torque of the dual three-phase permanent magnet synchronous motor，as well as the electromagnetic force and vibration performance results under the action of PWM harmonic current are analyzed. Experiments on a 100 kW dual three-phase motor are conducted. The results of the study show that the performance of dual three-phase permanent magnet motor is superior to that of three-phase permanent magnet synchronous motor. An accurate，reliable and fast finite element downscaling model of the motor is established. Based on the model，the influence of parameters on motor control performance is explored. This study provides an important reference for the design and optimization of dual three-phase permanent magnet synchronization motors.
