中文说明:目前,感应电动机是各行业的主导传动装置。与直流电动机相比,感应电动机动态响应差,控制起来相当麻烦。在电压型逆变器中,通过对逆变器开关矢量的优化选择,可以直接控制定子磁链和电磁转矩。本文应用空间矢量脉宽调制(SVPWM)技术,对采用V/F方法的IM驱动器进行了建模,更好地理解V/F方法及其难点。采用三电平逆变器,可以减小转速和转矩波动。然后利用电压矢量调制器实现参考电压矢量。在实例分析的基础上给出了大量的仿真结果。
English Description:
At present, induction motors are the dominant drives in various industries. It is quite cumbersome to control an induction motor (IM) because of its poor dynamic response in comparison to the DC motor drives. A Voltage Source Inverter (VSI), it is possible to control directly the stator flux linkage and the electromagnetic torque by the optimum selection of inverter switching vectors. The modeling of an IM drive employing V/F method with application of Space Vector Pulse Width Modulation (SVPWM) is performed in this article, it is better to understand the V/F method and its difficulties. By using 3-level inverter, ripples in speed and torque will reduce. The reference voltage vector is then realized using a voltage vector modulator. The extensive simulation results are presented based on case studies.