Comparison of fault tolerant control algorithm using space vector modulation of PMSM drive

This paper presents developed compact algorithms of space vector pulse width modulation (SVPWM) for six-switch and four-switch three-phase inverter. Calculations of the desired voltage vector in the PMSM drive are presented, an optimal voltage vector sequence and scaling factors for SVM has been derived to synthesize the reference voltage vector in each sampling period for healthy and fault drive. It has been proved by simulation and experimental results that four-switch inverter fed PMSM is able to operate steadily and with very good static and dynamic properties under the proposed SVPWM approach.