Reduced Switching Loss Model of DPWM-Based MPDTC of NPC Fed Induction Drive

摘要

In this paper, model predictive control of three-level inverter fed induction drive is investigated. The induction drive is fed with a space vector modulated three-level neutral point clamped topology. The proposed methodology is best suited for a medium voltage drive. This paper contains a detailed discussion of the principle and solution approach of the proposed scheme. The method proposes the prediction of the next voltage vector for the switching of the inverter. The voltage vector is selected from the prediction horizon, and then, the output is worked on the cost minimization function. The objective function based on the proposed scheme employs the discontinuous SVPWM which significantly reduces the switching loss by effectively using the zero switching discontinuities. The scheme shows a significant improvement in the torque, speed, switching loss, and improved THD characteristics. The model predictive direct torque control method is an improved scheme that gives efficient controlling action to the drives industry improving the reliability.