부산대학교 도서관

This paper presents a fault tolerance study of symmetrical six-phase induction drive (SSID) in cases of fault occurs within the inverter. This analysis deals with the different types of fault in inverter power electronic components, namely: one-leg open, two-legs open and short circuit of one switch. The inquiring simulation model of the effects of inverter faults on six-phase induction motor drive before or after the fault operation on MATLAB/Simulink, to study the effects on motor performance and compare with the healthy phase condition. The result shows that the motor is able to continue in operation due to the presence of torque pulsation and can be used to improving the drive performance by using a fault tolerant controller. To conquer these effects on motor drive performance, there are three fault tolerant topologies of six-phase voltage source inverter (VSI) are intimated.