Elhaddad, A. WOkasha, A. MKhalifa, E. MHelmy, Mamdouh Abbas2019-12-142019-12-142015DYNAMIC PERFORMANCE OF A DIRECTLY COUPLED PV PUMPING SYSTEM By: ANIS, WR; METWALLY, HMB SOLAR ENERGY Volume: 53 Issue: 4 Pages: 369-377 Published: OCT 1994 Times Cited: 21 2. A methodology for the design of photovoltaic water supply systems By: Vilela, OC; Fraidenraich, N PROGRESS IN PHOTOVOLTAICS Volume: 9 Issue: 5 Pages: 349-361 Published: SEP-OCT 20012284-7995http://managementjournal.usamv.ro/pdf/vol.XV_1/Art27.pdfAccession Number: WOS:000422184000027The present investigation aimed to study the effect of critical irradiance due to changing tilt angle of PV panel and tracking sun on submersible pump discharge. The authors used solar tracker and suitable tilt angle for the panel to increase the time interval during which the water pump operates. For the same irradiance collected by the PV, all systems pump the same amount of water, although they occur at different periods of the day. The pump itself 'does not know whether the electric power comes from any processes, as long as it has the same intensity.en-USUniversity for water pumpphotovoltaiccritical irradianceEgyptian conditionsArticle