HIL Simulation of On-line Parameters Estimation and Current Control of a Six-Phase Induction Machine using OPAL-RT Technologies

Multiphase machines are gaining popularity in clean, reliable and affordable energy systems for their robustness, reliability and fault-tolerant behavior. This paper addresses the problem of parameters estimation and the problem of controlling the currents of an asymmetrical six-phase induction machine with unmeasurable rotor currents. On one hand, this work proposes the use of recursive least squares estimation method that is effective and simple and allows fast convergence of the parameters to their real values. On the other hand, this paper proposes an augmented super-twisting algorithm that allows high tracking accuracy, fast finite-time convergence, matched and mismatched uncertainties rejection. Hardware-in-the-loop simulations have been conducted to demonstrate the performance and the efficiency of the estimation method and the developed nonlinear controller for the considered system.