TY  - SER
AU  - Easwarakhanthan,Thirunavukarasu
AU  - Follea,D.
AU  - Saunier,G.Y.
AU  - Walter,Despiegelaere,Ir
ED  - The Government of United Kingdom, 
TI  - Small scale photovoltaic water pumping: direct-coupled systems driving centrifugal pumps
T2  - Thesis
PY  - 1981///
CY  - Bangkok
PB  - Asian Institute of Technology
KW  - Photovoltaic power generation
KW  - Centrifugal pumps
N1  - A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development; Thesis (M.Eng.) - Asian Institute of Technology, 1981
N2  - A theoretical study, on photovoltaic pumping is undertaken to establish the most efficient direct- coupled system and to evaluate the relative merits of a system with a maximum power point tracker (MPPT) as an interfacing device,  over the direct-coupled system. An experimental study on the performance of a direct-coupled system is carried out by setting up an installation of solar  panels, direct-current permanent magnet motor and centrifugal pump. Using mathematical models of the system components, it is shown that  the direct- current permanent magnet motor with centrifugal pump provides the best adaptation to the direct-coupled system. Further, a comparative simulated performance study shows that the system with MPPT starts pumping earlier than the direct- coup.1ed system and that it could pump even during cloudy atmospheres.  Moreover, the simulation of daily flow, throughout a year, indicates that with MPPT, t he yearly flow increases by around 25% . The effect of an eventual sun tracking system is also considered in the theoretical studies. The experimental study carried out on t h e direct-coupled sys tern concludes that the system efficiency is between 3.2 and 4.1% for heads between  4.5 and 5.5 m, with the illumination levels above 600 W/m2 . The parameters of the regression models are obtained for the working curve of the system and for the characteristics of the pump, The performance curves are also  given
UR  - http://203.159.5.9/ait-thesis/detail.php?q=B21578
ER  -