【摘要】 在传统的异步电动机直接转矩控制中,低速时的转矩波动会使控制系统性能变差。采用高性能的磁链观测器来准确观测磁链,并且采用转矩与磁链双层滞环比较器来优化改进开关选择表。仿真与实验结果证明该控制方案能有效降低低速时的转矩波动。更多还原

【Abstract】 The torque ripple will degrade the performance of control system by classical direct torque control for asynchronous motor in low speed.High performance flux observer is introduced,and switching table by torque and flux two-level hystersis bands are optimized.Simulation and experimental results testify this scheme can effectively reduce the torque ripple in low speed.更多还原