Model predictive direct torque control of PMSM with optimized duty cycle

Abstract

Model predictive direct torque control (MPTC) is the emerging control technique in the field of electric drives. Compared to conventional DTC it's very accurate in voltage vector selection as well yields lower torque ripples by using the system model. The concept of duty cycle is merged along with it to improve the efficiency. The null vector is employed along with the selected voltage vector. The duty cycle is determined based on various principles. This paper focuses on the torque ripple minimization by optimizing the duty cycle of the selected vector. Results are compared in both Simulink and hardware. The Simulink is carried out with MATLAB.