Title :
Loss models of photovoltaic water pumping systems
Author :
Lujara, N.K. ; van Wyk, J.D. ; Materu, P.N.
Author_Institution :
Dept. of Electr. Eng., Univ. of Dar es Salaam, Tanzania
fDate :
6/21/1905 12:00:00 AM
Abstract :
The paper presents loss models of photovoltaic (PV) DC and AC motor drive water pumping systems (WPS). The DC and AC motors are fed by power electronic converters with or without maximum power tracking. The models are developed with the objective of maximizing the conversion efficiency from the solar irradiation to the potential energy of water by taking into account the variations in the pumping head at a given insolation. The efficiency of the array, the pump and the motor are found to be the most critical parameters for the performance of the systems. In addition, matching of the drive system and the load with the insolation characteristic of the solar array is found to be critical, since maximum system efficiency occurs at a specific head, which varies as the insolation changes
Keywords :
DC motor drives; DC-DC power convertors; induction motor drives; invertors; losses; permanent magnet motors; photovoltaic power systems; pumps; water supply; AC motor drive; DC motor drive; DC-DC converter; PM DC motor; array efficiency; conversion efficiency maximisation; drive system/load matching; induction motor; inverter; loss models; maximum power tracking; maximum system efficiency; motor efficiency; photovoltaic water pumping systems; potential energy; power electronic converters; pump efficiency; pumping head variations; solar irradiation; AC motors; DC motors; DC-DC power converters; Induction motor drives; Induction motors; Magnetic heads; Permanent magnet motors; Photovoltaic systems; Power system modeling; Solar power generation;
Conference_Titel :
Africon, 1999 IEEE
Conference_Location :
Cape Town
Print_ISBN :
0-7803-5546-6
DOI :
10.1109/AFRCON.1999.821902
