Two similar PV powered water pumping systems (PVPS) with a programmable control system, which enables matching
between the loads (pumps) and the generated PV power according to solar radiation intensity, are treated in this paper. Testing results
show an annual gain of 7.4% in water pumped through using the control system. Moreover, up to 16% increment in daily water
pumped, especially in winter days of moderate solar radiation (≈2.8 kWh/m2.day), has been measured. This means that a considerable
reduction of the water cost is achieved and thereby the feasibility of PVPS is increased. Further increments of total system efficiency
achieved by utilizing PV modules of higher efficiency and by mounting the PV array on a support structure with adjustable tilt angle
are discussed. Decreasing the hydraulic output of the pumping system, due to the increase of temperature in summer, is demonstrated
through field testing results

Title

International Journal of Energy Engineering

Publisher

THE WORLD ACADEMIC PUBLISHING CO., LIMITED

Publisher Country

Hong Kong

Publication Type

Both (Printed and Online)

Volume

3

Year

2013

Pages

151-157