Bifunctional Grid Assisted Solar PV fed System for Water Pumping and Domestic Load

This work deals with the development of a bifunctional grid assisted solar photovoltaic (PV) array for water pumping system (WPS) and domestic load. An undisturbed water delivery and hence the reliability is ensured by supplying a continuous grid support to solar PV generation. A synchronous reluctance motor is used to drive the water pump. Moreover, to make the system cost-effective, position sensorless based vector control algorithm is implemented. The system also consists of single-phase H-bridge inverter to supply PV array and grid power to domestic or local loads. A power factor corrected (PFC) boost converter is used to enable the unidirectional power flow from the grid to the DC link. The presented system and control ensure a consumer to have a continuous water delivery regardless of the atmospheric condition. The relevant power quality standards in terms of unity power factor (UPF) and total harmonic distortion (THD) necessary to be satisfied are met by the developed control. MATLAB/Simulink software environment is used for the simulation and the system performance is studied at different climatic conditions.