Performance Analysis of a Small-Scale Photovoltaic Water Pumping System

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Montana Rungsiyopas
Chokchai Chuenwattanapraniti


          The performance of a photovoltaic (PV) pumping system depends on several factors such as the pump head, PV array size, and solar radiation. This research aims to investigate and analyze the performance of a small PV pumping system driven by an AC motor under various system configurations and solar irradiance. The 1.1 kW motor coupled to the surface pump was then formulated in the laboratory and the test results were carried out under different testing conditions. The polynomial regression was applied to the test data providing the empirical model relating the water flow rate and head for each solar irradiance. In the estimation of daily water delivery, some examples of solar irradiance profiles were entered into the model. In addition, performance analysis was performed which enables the selection of proper system configulation to fulfill the daily water demand while achieving high system efficiency.


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Rungsiyopas, M., & Chuenwattanapraniti, C. (2022). Performance Analysis of a Small-Scale Photovoltaic Water Pumping System. SAU JOURNAL OF SCIENCE & TECHNOLOGY, 8(1), 10–27. Retrieved from
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