Active fault tolerant control for Permanent Magnet Synchronous Motor drives

Abstract

the active fault tolerant control was presented for to compensate automatically the possible failures occurring in a dynamic system and it became very attractive as it can be used in inverter open-switch fault for three-phase permanent magnet synchronous Drives. However, few studies have been focused on active fault tolerant control; the major works have been suggested in order to control the inverter at normal condition or at faulty mode separately. This paper integrated self-repairing control in three phase permanent magnet synchronous motor drive system with one faulty leg based on two controllers PI and Fuzzy PI. Three tasks have been guaranteed in this work, the first consists to detect the faulty switch and isolate it, in the second task a hardware reconfiguration take place in order to feed the faulty phase, and then an additive control law is activated to compensate the fault.