基于DSP的无速度传感器交流异步电机矢量控制系统设计

Speed Sensorless Vector Control System Design for AC Induction Motor Based on DSP

为提高交流异步电机控制系统的可靠性和适应性,本文设计了基于DSP的无速度传感器异步电机矢量控制系统。根据异步电机转子磁场定向控制的基本方程式建立了改进电压型转子磁链估算模型,并且采用PI自适应速度估算法来估计转速,同时采用电压空间矢量法实现对异步电机的控制。

In order to improve the reliability and adaptability of control system for AC induction motor,speed sensorless vector control system for AC induction motor is designed based on DSP in this paper.According to the fundamental equations of AC induction motor for the field oriented control,the improved rotor flux estimation model and the adaptive speed estimation model are built respectively,and turning speed is estimated by PI self-adaptive estimation.At the same time,the AC induction motor is controlled by using the Space Vector Pulse Width Modulation method.