Performance analysis of FCS-MPC and PI-resonant fault-tolerant controllers for WECS

Fault-tolerant capability is of special interest in wind energy conversion systems (WECS), One of the most attractive features of multi-phase machines is the fault-tolerant capability they possess due to the higher number of phases. Different post-fault control strategies based on hysteresis, proportional-integral (PI) resonant and predictive techniques have been recently proposed. They all proved their capabilities to withstand fault situations and to preserve the fundamental component of the air-gap field, while achieving minimum losses, maximum torque per ampere, and reducing torque vibrations. Nonetheless, due to its recent implementation, no thorough study has been done comparing the performance of these controllers. In this presentation, two open-phase fault-tolerant control schemes, based on PI-resonant and finite-control-set model-based predictive control (FCS-MPC) techniques, respectively, for five-phase induction machines, are compared through simulation results.