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Implementation of a predictive controller for a sensorless interior permanent-magnet synchronous motor drive system

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2 Author(s)
Chen, J.-L. ; Dept. of Electr. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan ; Liu, T.-H.

This study proposes a predictive controller design for a sensorless interior permanent-magnet synchronous motor drive system. The controllers include a current-loop predictive controller and a speed loop predictive controller with an external load estimator. In addition, a rotor position estimator with on-line tuning stator resistance and q-axis inductance has been designed to reduce the estimating error. By using the proposed control algorithms, the closed-loop sensorless interior permanent-magnet synchronous motor drive system can achieve fast transient response, satisfactory load disturbance response and good tracking response. A digital signal processor, TMS320F2812, is used to perform the rotor position estimating algorithm and the predictive control algorithm. As a result, the hardware is very simple. The experimental results can validate the theoretical analysis and show that the predictive controllers have better performance than the proportional integral (PI) controllers.

Published in:

Electric Power Applications, IET  (Volume:6 ,  Issue: 8 )