Speed Sensorless Control of Dual Induction Motor using Direct Torque Control - Space Vector Modulation

The design of single inverter driven dual motor (SIDM) system often requires high dynamic performance and the elimination of speed sensor. To meet these requirements, this paper propose the combination of direct torque control – space vector modulation (DTC-SVM) and speed adaptive flux observer to be implemented on SIDM control. DTC-SVM has high transient performance and low steady-state ripple, while speed adaptive flux observer has proven estimation performance. The proposed control algorithm is developed with both existing parallel control methods, i.e. master-slave scheme and mean scheme. The simulation result show that the proposed method can perform well with master-slave scheme and mean scheme.