Grid-PV Array Fed Induction Motor Drive for Water Pumping

This paper deals with a PV array fed water pumping system operated by a mechanical sensorless induction motor drive. The recurrence of PV power outage causes the disturbance in water pumping. One possible solution is to use a utility grid as a backup source. The power is delivered by the grid in case the PV array is unable to meet the required power demand. A current multiplier approach is developed for unidirectional power flow control through a power factor improved boost converter. The utilization of reduced number of sensors makes the system cheap. The proposed system enables a consumer to get a rated quantity of water regardless of duration or the climatic condition. Simulated and test results justify the suitability of the system under different operating conditions.