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008			110905s1981 th uu|m rtt 0| a1eng d
035			_a.b10607833
099		9	_aAIT Thesis no.ET-81-10
100	1		_aEaswarakhanthan, Thirunavukarasu
245	1	0	_aSmall scale photovoltaic water pumping : _bdirect-coupled systems driving centrifugal pumps
260			_aBangkok : _bAsian Institute of Technology, _c1981
300			_a80 p.
490	1		_aThesis ; _vno. ET-81-10
500			_aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development
502			_aThesis (M.Eng.) - Asian Institute of Technology, 1981
520			_aA 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.
650		0	_aPhotovoltaic power generation
650		0	_aCentrifugal pumps
700	1		_aFollea, D., _eChairperson
700	1		_aSaunier, G.Y., _eExamination committee
700	1		_aWalter, Despiegelaere, Ir., _eExamination Committee
710	2		_aThe Government of United Kingdom, _eScholarship Donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. ET-81-10
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B21578
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