Open-Circuit Fault-Tolerant Control of Multi-Phase PM Machines by Compensating the d-q Axes Currents

This paper presents a novel method to control sinusoidal distributed winding or back electromotive force (back-EMF) multi-phase permanent magnet (PM) machines under open-circuit fault conditions. In this study, five different conditions are considered: single-phase, adjacent double-phase, non-adjacent three-phase, and three-phase open circuit New current sets for the remaining healthy phase obtained by compensating direct-quadrature (d-q) axes currents. For purpose, an iterative has been used get new set of D-q currents, due faulty phase/phases, shared phases obtain same d-q currents as in condition. Therefore, torque is produced The developed simulated MATLAB/Simulink using modelled back-EMF five-phase machine. A vector block diagram designed run machine model successfully tolerant Additionally, finite element analysis (FEA) undertaken simulate PM MagNet software. Open-circuit fault-tolerant fed into coils model. Satisfactory results have obtained. Because includes higher order harmonics, especially third harmonic, ripple interaction between harmonics.