【摘要】 与传统直接转矩控制相比,基于空间电压矢量调制的直接转矩控制(DTC-SVM)技术具有转矩脉动小、逆变器开关频率恒定等优点。目前,绝大多数DTC-SVM都是基于定子磁链闭环控制。通过对电机模型的分析和推导,提出一种采用自抗扰控制器(ADRC)的转子磁链闭环DTC-SVM控制策略;在简化系统结构的同时也提高了系统的抗扰性能。仿真结果表明,新控制策略在保留DTC-SVM优点的同时,有效改善了系统的动态性能。更多还原

【Abstract】 As compared to traditional direct torque control(DTC),direct torque control based on space-vector modulation(DTC-SVM)features low torque ripple and constant switching frequency.Most DTC-SVM relies on a simplified description of the stator voltage components in stator flux oriented coordinates.This paper presented a new DTC-SVM strategy with closed-loop rotor flux control,and employed the auto disturbance rejection controller(ADRC)to simplify the structure of the system and achieve robustness against perturbation.Simulation results show a significant improvement in dynamic performances of DTC system.更多还原