Digital Simulation of Fault Tolerant Inverter Fed Induction Motor with a Leg Swap Module

Most of the industrial operations involve the use of induction motor drives. The operations of the drives are so crucial in some events that any fault in the operation of drive could result in serious loss to the industry in terms of capital and raw materials. Hence, it is necessary that an induction motor drive should be fault tolerant. This paper investigates the fault operation of a single phase open circuit fault in the drive by performing fault analysis on the harmonic spectrum of the current waveforms. A fault tolerant system is proposed which can operate even after occurrence of the fault in runtime. The simulation studies are done using MATLAB simulation tool and the results are presented.