Space Vector Controlled PMSM Drive Based on Fuzzy Logic Controller

Abstract

To improve the dynamic performances of Permanent Magnet Synchronous Motor (PMSM) drive, a novel implementation of speed controller based on adaptive fuzzy logic is presented in this project. Using the output of the fuzzy speed controller (FC), the quadrature axis current reference value can be obtained.
The basic principle of vector control is to decouple the stator current to get direct axis and quadrature axis components. The vector control strategy is formulated in the synchronously rotating reference frame. The steady-state response of the predictive control can be effectively improved by using a simple time delay control approach. To increase the performances of PMSM drive, an adaptive speed controller based on fuzzy logic is proposed. The availability of the PMSM parameters is confirmed by computer simulations. The results of simulation have shown that the PMSM drive with the proposed control scheme has the merits of simple structure, robustness, quick tracking performance.
In this project, the conventional PI speed controller has been replaced by the fuzzy controller. It combines the capability of fuzzy reasoning in handling uncertain information and the ability to compensate of the disturbance voltage observer on-line. The proposed control scheme has been testified by simulation, the results indicate the PMSM drive with the adaptive fuzzy controller will have the ability of quick recovery of the speed from any disturbances and parameters variation. Accordingly, the proposed PMSM drive will have better dynamic performances and robustness.