一种新型高性能直接转矩控制系统研究

A New High-performance Technology for Direct Torque Control of Induction Motors

无速度传感器技术在直接转矩控制(DTC)系统中的应用是当前交流传动领域的一大发展方向,最常用且效果较好的方法为转速自适应状态观测器,观测性能取决于观测器的速度自适应律和增益。当前采用转速观测器的速度辨识方案大部分采用极点配置方法,存在区域不稳定的问题。针对此问题,这里提出一种新型观测器,并在基于TMS320F2808的实验平台上实现了无速度传感器DTC系统,验证了该方案的有效性。

Make use of speed sensorless technology in direct torque control （DTC） is the most common direction in AC drive nowadays, the most commonly used and better method is speed adaptive observer.The most used method in speed adaptive observer is speed identification program based on pole-placement technique which exist the problem of unstable regions.A new observer is proposed for this problem,the proposed system is realized in the TMS320F2808 platform, and the effectiveness of the proposed system is proved in the experiment.