[IEEE 2018 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT-Europe) - Sarajevo, Bosnia and Herzegovina (2018.10.21-2018.10.25)] 2018 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT-Europe) - Modelling and Evaluating Performance of Large Off-Grid PV Systems for Water Pumping

摘要： This paper discusses modelling of photovoltaic pumping system (PVPS) applications and presents a simple but accurate model for the evaluation of performance of a large-scale multi-pump off-grid PVPS', with single axis solar tracking and variable frequency drive control of pumps. The presented model is validated on an example of an actual 357 kWp 2-pump PVPS installation, demonstrating its use for feasibility and planning studies. The results of a brief economic analysis of the considered off-grid PVPS suggest an estimated 10-year payback period, when compared to the cost of a grid-connected configuration.