Sizing and implementation of Photovoltaic Water Pumping System for Irrigation

Solar photovoltaic systems convert energy of light directly into electricalenergy. This work presents, a process to compute the required size of thestand-alone solar photovoltaic generator based water pumping systemfor an existing area. In addition solar photovoltaic generator isconnecting voltage source inverter fed vector controlled inductionmotor-pump system. Perturb and observe are used for harvestingmaximum power of PV generator in between buck-boost DC converterand inverter system. In this paper system result is validated by fuzzylogic system and compare with variable frequency drives based PIcontrollers, driving motor-pump system. The operational performanceat 60 m head, VFD based controllers in terms overshoot and setting timeand also analysis performance of motor-pump set under differentweather conditions. By assessment of system we find that speed andtorque variation, overshoot and settling time is more with PI controller,Fuzzy logic controller (FLC) performance have dominance to VFDbased PI controller