无速度传感器的内嵌式永磁同步电机自抗扰控制调速系统

Active Disturbances Rejection Control Speed Control System for Sensorless IPMSM

自抗扰控制(active disturbance rejection control,ADRC)理论综合了经典调节理论和现代控制理论的优势,不依赖于系统的精确数学模型。利用此优点,该文提出了无速度传感器内嵌式永磁同步电机(interior permanent magnet synchronous motor,IPMSM)的转速电流ADRC综合控制策略。采用ADRC设计了IPMSM的速度控制器和电流控制器。在速度控制器中,将外部负载扰动和内部模型扰动作为系统的未知扰动,在电流控制器中将包含转速的乘积项作为模型不确定性部分,分别利用ADRC进行观测和补偿。利用电流控制器中的扩张状态观测量,对电机的转子位置和转速进行估计。仿真结果表明,系统具有很好的鲁棒性和较好的控制效率,并且在基速以下的一定范围内,能对转子位置进行较准确的估计。

Using the theory of active disturbance rejection control （ADRC）, the speed sensorless control strategy was proposed of the interior permanent magnet synchronous motor （IPMSM） drives. The control scheme was unique in which ADRC was included in the speed controller and current controller respectively. ADRC was Used in speed controller to observe and compensate the disturbances including exterior load disturbance and interior model disturbance. Product term including speed was regarded as uncertainty that was observed and compensated by ADRC. The motor speed was estimated by calculating the estimate of the extend state in current controller. Simulation results show that the control system with speed and current ADRC controller provides excellent dynamic response and robust control, and the motor speed can be estimated in certain range of rated speed.