| Abstract |
An experimental implementation of a vector controlled induction motor variable speed drive system is studied. This system incorporates a modern control theory based on the Exact Model Matching Method and is composed of a real-time microprocessor controller, a MOSFET inverter and an inductjon motor with a speed sensor. Calculated applied voltage reference values are utilized to directly control motor terminal voltages, hence, the system eliminates any current control hardware usually required in vector control inherent uncertainty factors, such as load torque variation, insufficient decoupling due to parameter excursion and so forth, are compensated by adoption of adaptive control. Furthermore, resulting dynamic characteristics coincide with those of the model, since the system tunes itself. Through both simulation and experiments, it is confirmed that the proposed system demonstrates a good model-following ability. |
