单个逆变器驱动两台并联感应电机的无速度传感器矢量控制方法

A Speed-Sensorless Vectror Control Method of Parallel-Connected Dual Induction Motor Fed by a Single Inverter

介绍在单个逆变器驱动两台定子绕组并联的感应电机时,对各转子产生的转矩采取无速度传感器矢量控制的方法。该方法采用自适应转子磁通观测器取代磁通传感器,磁通观测器中增加转子速度自适应测定来取代速度传感器。试验结果表明,在每台感应电机不同的额定条件下,该方法是实用的。

The purpose of this paper is to present the speed-sensorless vector control method of the torque production from each rotor of two induction motors with parallel-connected stator windings fed by a single inverter. In this paper, an adaptive rotor flux observer is applied to the method in order to eliminate a flux sensor, and anadaptive scheme for rotor speed is added to the adaptive rotor flux observer in order to eliminate a speed sensor. The experimental results show that the proposed method is useful under the condition that the ratings of each induction motor are different.