双曲正切函数在PMSM直接转矩控制中的应用

Application of Hyperbolic Tangent Function to PMSM Direct Torque Control

针对永磁同步电机(permanent magnet synchronous motor,以下简称PMSM)直接转矩控制存在较大的转矩脉动问题,提出了一种基于双曲正切函数的控制方法,函数的输入是实际磁链值和参考磁链值的偏差,输出是定子电阻的补偿值.通过仿真,该方法能够显著减小转矩脉动,具有更优越的控制性能.

With regard to high torque ripple in permanent magnet synchronous motor （PMSM） in direct torque control, a control method based on hyperbolic tangent function is proposed. The input of the function is the error between actual flux value and reference flux value, and its output is the compensation value of stator resistance. Through simulation, the method is able to reduce the torque ripple significantly and is of superior control performance.