Advanced predictive flux control for B6 inverter fed induction motor drives

Predictive torque control (PTC) has already been introduced to cope with the problem of the torque and flux ripples of AC machines. However, the simultaneous control of torque and flux in conventional PTC scheme is not very trivial. Alternatively, the predictive flux control (PFC) has been suggested based on removing the weighting factor from the implementation scheme. This paper proposes the development of two new phase-clamping (PC) PFC schemes, founded on the basis of modulating two legs of the inverter fed induction motor (IM). In addition, this paper introduces the theory of duty-cycle optimisation into the three PFC schemes to optimise the amplitude of the optimal vector. The performances of the six PFC strategies are evaluated based on several simulation and then experimental tests. The performances of the IM drive under the proposed PC-PFC methods confirm the superiority in terms of average switching frequency, current harmonic distortion, and torque ripple. Copyright © 2022 Inderscience Enterprises Ltd.