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.
[4] ZHU Z Q,HOWE D,BOLTE E,et al.Instantaneous magnetic field distribution in brushless permanent magnet DC motors.I.Open-circuit field[J].IEEE Transactions on Magnetics,1993,29(1):124-135.
[5] ZHU Z Q,HOWE D.Instantaneous magnetic field distribution in brushless magnet DC motors.II.Armature-reaction field[J].IEEE Transactions on Magnetics,1993,29(1):136-142.
[6] 王强,何海波.多相感应推进电机振动分析研究[J].大电机技术,2017(3):37-40.
[7] BOESING M,SCHOENEN T,KASPER K A,et al.Vibration synthesis for electrical machines based on force response superposition[J].IEEE Transactions on Magnetics,2010,46(8):2986-2989.
[10] CICEO S,CHAUVICOURT F,VARATICEANU B,et al.PMASynRM late design-stage rotor shape NVH optimization[C]//2020 International Conference on Electrical Machines.Gothenburg:IEEE,2020.
[11] AZAM M K M B,DRIST A H,AHMED A,et al.FEA-based NVH performance analysis for a dual three-phase permanent magnet machine[C]//2023 IEEE Energy Conversion Congress and Exposition.Nashville:IEEE,2023.
[13] LO W C,CHAN C C,ZHU Z Q,et al.Acoustic noise radiated by PWM-controlled induction machine drives[J].IEEE Transactions on Industrial Electronics,2000,47(4):880-889.
[14] KUMAR A C B,NARAYANAN G.Variable switching frequency PWM technique for induction motor drive to spread acoustic noise spectrum with reduced current ripple[J].IEEE Transactions on Industry Applications,2016,52(5):3927-3938.
[15] HUANG Y L,XU Y X,ZHANG W T,et al.Hybrid periodic carrier frequency modulation technique based on modified SVPWM to reduce the PWM noise[J].IET Power Electronics,2019,12(3):515-520.
[17] LAI Y S,CHEN B Y.New random PWM technique for a full-bridge DC/DC converter with harmonics intensity reduction and considering efficiency[J].IEEE Transactions on Power Electronics,2013,28(11):5013-5023.
