基于Cuk变换器的永磁记忆电机调磁控制

Magnetic tuning control of permanent magnet memory motor based on Cuk converter

针对永磁记忆电机(permanent magnet memory motor,PM-MM)调磁控制中存在的电压限制问题,提出一种基于Cuk变换器的控制策略。首先分析随着PM-MM调磁速度的增加,电压限制问题对系统稳定性的影响;在此基础上利用Cuk变换器的原理,结合PM-MM的数学模型,针对调磁过程中的电压限制问题,提出了一种基于Cuk变换器的PM-MM调磁控制策略,并以一台20 kW的PM-MM为被控对象进行仿真研究。结果表明:所提策略能有效补偿电机调磁过程中所需的电压,大幅抑制了充磁过程中的转矩及转速的波动,提高了系统的稳定性。

Aiming at the problem of voltage limitation in magnetization control of permanent magnet memory motor(PM-MM),a control strategy based on Cuk converter is proposed.The effect of voltage limitation on the stability of the system is analyzed with the increase of the PM-MM magnetic adjusting speed.On the basis of the principle of Cuk converter and the mathematical model of PM-MM,a PM-MM control strategy based on Cuk converter is proposed to solve the voltage limitation in the process of magnetic regulation.The simulation results show that the proposed strategy can effectively compensate the voltage required in the process of motor magnetization,greatly suppress the fluctuation of torque and speed in the process of magnetization,and improve the stability of the system using a 20 kW PM-MM as the controlled object.