双三相永磁电机电磁振动分析

Electromagnetic vibration analysis of dual three-phase permanent magnet motor

摘要:

多相永磁电机因其具有高效,高功率密度,体积小等优点,以及可实现低压大功率驱动的特点而广泛应用于舰船电力推进等高性能和高可靠性的推进系统中。本文对双三相永磁电机的电磁特性及控制方案开展研究,分析了双三相永磁同步电机的磁场、电流、电磁力以及电磁转矩仿真结果及PWM谐波电流作用下的电磁力、振动性能,并在一台100kW双三相电机上进行实验,研究结果表明,双三相永磁电机的性能均优于三相永磁同步电机。基于电机有限元降阶模型,探究了参数对电机控制性能影响。本研究为双三相永磁推进电机的静音设计和性能优化提供了重要参考。

Abstract:

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, analyzes the simulation results of the magnetic field, current, electromagnetic force and electromagnetic torque of the dual three-phase permanent magnet synchronous motor and the electromagnetic force and vibration performance results under the action of PWM harmonic current, and conducts experiments on a 100kW dual three-phase motor. the results of the study show that the performance of dual three-phase permanent magnet motor are 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.