Analysis and Performance Simulation of Solar Powered Water Pumping System: A Case Study in Jigjiga
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Date
2019-06
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Addis Ababa University
Abstract
In most regions of Ethiopia groundwater is the major source of freshwater for drinking and
agriculture, almost all groundwater is obtained from shallow to moderately deep wells. Whether we
use diesel generators to generate power or electricity from the grid, the energy consumption is high
and also using diesel energy which is one of the major causes of air pollution. The possible solution
to minimize this problem is using renewable energy system. In this research the performance
analysis of photovoltaic powered water pumping (PVPWP) system with maximum power point
tracking (MPPT) controller was carried out under climate condition of Jigjiga. In this research a
detailed electrical characteristics of 1800Watt non-tracking PV array (with 6Sx4P configuration)
was determined on current vs. voltage as well as power vs. voltage plane by taking manufacturer’s
data sheet of the PV module as input. A polynomial performance equation (which relates output
flow rate of the pump with the input power and system head) was obtained with curve fitting
technique, after performance points of the pump had been taken from the performance curve. Hence
the hourly performance variation of the PVPWP system was predicted from the electrical
characteristics of the PV array and the performance equation for (50, 60, 70, 80, and 90 meters of
pumping heads). The modeled system gives a flow rate of 20-30 m
/day for sunny days for the total
dynamic head of 80m and solar irradiation of 5000-7000 Wh/m
3
2
/day
Description
Keywords
Photovoltaic water Pumping system, curve fitting, MPPT controller