三相感应电机矢量控制系统滞环控制和SVPWM的对比研究

Comparative Research on Hysteresis Control and SVPWM in Vector Control System of Three-phase Induction Motor

以三相绕线型感应电机为研究对象,建立了在MT坐标系下三相感应电机的数学模型,采用定子磁链定向控制策略,实现对定子励磁电流和转矩电流的解耦控制。在Matlab中搭建了三相感应电机矢量控制系统仿真模型,并对滞环控制和SVPWM两种控制手段做了对比研究,提出一种两者相结合的控制策略。

Taking three-phase induction motor as the research object, the mathematical model of this motor in the coordinate system of MT exis is established. With the control strategy of stator＇s flux oriented, decoupling control of the field current and torque current of stator is achieved. The modulation model of vector control system of three-phase induction motor is built based on MATLAB. Comparative study for hysteresis control and SVPWM is made. A new control strategy combination with the two methods is proposed.