Hybrid Model Reference Adaptive Speed Control for Vector Controlled Permanent Magnet Synchronous Motor Drive

This paper investigates new form of a hybrid model reference adaptive speed control (HMRASC) for vector controlled permanent magnet synchronous motor (PMSM) drive. In the proposed scheme, a direct fuzzy logic controller (FLC) is employed as the main controller, and model reference based proportional integral (PI) controller as the adaptation controller. The design and optimization of the FLC and the adaptation mechanism are presented. The efficiency and performance of the HMRASC is examined, by simulation at different operating conditions. The operating conditions studied include various step speed commands from standstill with nominal and changes in motor parameters and load torque. The results obtained are evaluated and compared with direct FLC without the adaptation mechanism. The results achieved show the superior of HMRASC over direct FLC especially for load disturbances and load inertia variations