Authors: Bidyadhar Subudhi; Raseswari Pradhan
Addresses: Centre of Industrial Electronics and Robotics, Department of Electrical Engineering, National Institute of Technology (NIT), Rourkela, India. ' Centre of Industrial Electronics and Robotics, Department of Electrical Engineering, National Institute of Technology (NIT), Rourkela, India
Abstract: This paper presents a comparative study on different solar array parameter extraction methods such as a modified Newton-Raphson-based technique proposed in this work and two other popular techniques such as Bouzidi's Newton-Raphson method and Villalva's iterative method. A single-diode-five-parameter model is considered in this study for modelling the solar (PV) panel. The parameters of interest such as series resistance, shunt resistance, diode ideality factor, dark saturation current and photo-generated current are extracted under standard test conditions (STC) using open circuit voltage, short circuit current and maximum power point voltage and current from manufacturer's data-sheet. Comparative assessment of the above parameters extraction methods envisages that the modified Newton-Raphson extraction method provides accurate parameters with simple calculations.
Keywords: single-diode-five-parameter PV model; PV array parameters; Bouzidi; Newton-Raphson method; Villalva; iterative method; SSI-M6-205 PV panel; solar arrays; parameter extraction; photovoltaic arrays; solar energy; solar power; solar panels.
International Journal of Renewable Energy Technology, 2012 Vol.3 No.3, pp.295 - 315
Received: 30 Jun 2011
Accepted: 12 Dec 2011
Published online: 24 Jun 2012 *