基于DSP的无速度传感器转差频率控制系统

The Slip Frequency Control System of Speed Sensorless based on DSP

提出了利用异步电动机电压和定子电流来实时辩识感应电动机速度的模型参考自适应系统。将此系统同传统的电压 /频率协调控制的变频器系统结合起来 ,组成了无速度传感器转差频率控制系统。试验结果表明 ,此系统具有较好的动、静态性能。

The paper describes a model reference adaptive system for the identification of induction motor speed from measured motor stator voltages and currents. We combine this system with the common inverter based on constant U/f control strategy to form a slip frequency control system without a speed sensor. Some experiments show that the system possesses better dynamic and static performance.