A review on different PWM techniques for five leg voltage source inverter

Presently, many industrial processes require high performance switching control of a number of inverter-fed induction machines. Multi-motor drives employ various methods to reduce complexity and minimize the cost. Independent control of motors is required as these motors are subjected to frequently changing operating conditions. Recent researches have ascertained the independent control of parallel connected dual induction motor drive system fed through a five leg voltage source inverter (FLVSI). Implementation of suitable Pulse Width Modulation (PWM) technique to the inverter fed system is of paramount importance. This paper reviews the execution method of recently proposed PWM schemes for independent control of dual induction motor drive system employing a Five Leg Inverter (FLI).