Analysis of Electromagnetic Noise of Dual Three-Phase Permanent Magnet Synchronous Motor With Pod Propeller at Various Speed

Because of its high efficiency, high torque, relatively low voltage and other advantages, the dual three-phase permanent magnet synchronous motor has been fully used in the pod propeller, and the control of its vibration and noise level is particularly important. In this study, we develop a mathematical model for the dual-three-phase permanent magnet synchronous motor (PMSM) by examining its operational principles. Subsequently, we employ electromagnetic simulations and modal superposition techniques to evaluate the electromagnetic force and associated noise characteristics of the motor. Finally, the noise size under various speed is analyzed, and the relationship between the noise value and the motor speed is obtained. The model can then be used to optimize the noise generated by the motor.