摘要
针对无速度传感器异步电机,提出了一种新的滑模磁通和速度观测方法。实际电流和观测电流之间的误差收敛到零,保证磁通观测器的精确性。根据估计的定子电流和转子磁链来估计转子的转速和转子时间常数。估计的转子时间常数用于滑模计算和观测器结构中,估计的转速用来作为转速调节的反馈。仿真结果证明所提出的速度估算方法有效以及所提出的观测器结构具有鲁棒性。
A new sliding mode flux and speed observer is proposed for speed sensorless induction motor.The error between the actual and observed currents converges to zero,which guarantees the accuracy of the flux observer.The rotor speed and the rotor time constant are estimated based on the estimated stator currents and rotor flux.The estimated rotor time constant is used in slip calculation and observer structures and the estimated speed is used as feedback to the speed regulation.The simulation results of the spee...
出处
《电气传动自动化》
2009年第2期1-3,7,共4页
Electric Drive Automation
关键词
无速度传感器
异步电机
间接磁场定向
仿真
speed sensorless
induction motor
indirect field-oriented control
simulation
