Speed Control of Brushless Doubly Fed Induction Machine Drive Based on Model Reference Adaptive System

Recently, according to the valuable advantages of Brushless Doubly Fed Induction Machines (BDFIMs), they have attracted the attention of numerous researches. BDFIMs have shown appropriate operation in industrial variable speed drives. This paper proposes a Model Reference Adaptive System (MRAS) is proposed for speed control of BDFIMs. This controller in combination with a Direct Torque and flux Controller (DTC) provides robust and fast dynamic performance to the BDFIM drive system. This article also proposes the Maximum Torque per Inverter Ampere (MTPIA) strategy for BDFIM drive systems. In the proposed strategy, in order to minimize the control winding current, the d-axis reference current of this winding is controlled at zero. The simulation results confirm that the proposed control strategy has significantly improved the dynamic performance of the BDFIM drive in various conditions such as reference speed alterations.