基于新型磁链观测器的无速度传感器感应电机控制技术研究

提出一种由补偿式的二阶带通滤波器电压磁链观测模型,基于该补偿电压模型,构成新的磁链估计器.为了解决磁链观测器多平衡状态的问题,提出以提高磁链估计精度的方法、对不同类型感应电动机磁通观测器的控制技术进行研究.对传统的模型参考自适应速度估计方法进行改进,基于补偿式二阶带通滤波器电压磁链观测模式作为参考模型,速度估计的精度提高.同时对基于新型磁链观测器的无速度传感器感应电机控制技术进行研究,然后通过仿真验证.

Research on the different kinds of speed sensorless induction machine flux observer control technology

A compensated voltage model is proposed in this paper, which consists of a second order band pass filter and its compensator. Based on this compensated voltage model, a new flux estimator is constructed. To solve this multipleequi-librium states problem, a method to improve the flux estimator is proposed and the different kinds of induction motor flux observer control technology are studied. The traditional model reference adaptive speed estimation method is modified and using the band pass filter compensated voltage model proposed in this paper as the reference model. The precision of speed estimation is improved. On the basis of this modified model reference adaptive speed estimation method, a speed sensorless induction machine vector control strategy is proposed and then validated through simulation.