Abstract
Tremendous penetration of photovoltaic (PV) systems into the electric grids develops many challenges in the modern power systems. In the simulation analyses of PV systems, accurate modelling of PV modules plays a crucial role in enhancing the characteristics of such systems. Modelling of such PVs is represented by a non-linear I - V behavior, involving various unknown parameters because of the inadequate data offered in the datasheet of PV cells. This paper proposes a novel implementation of the equilibrium optimizer algorithm (EOA) to identify the nine-parameters of a three-diode (TD) model of a PV module. Soundness of the EOA-TD model is extensively confirmed by the simulation results that are carried out in different environmental conditions. The optimal parameters obtained using the proposed approach are compared with those realized using other optimization techniques-based TD models. To achieve a practical study, the simulation and experimental outcomes are checked for various commercial PV panels and the error among these results records a value less than 0.5%. Moreover, the optimal parameters attained using the EOA are competitive and very close to that realized using other approaches, where the offered EOA has exhibited a minimum fitness value of 1.14e-14 and 7.154 e-13 for Kyocera and Solarex marketable PV cells, respectively. The effectiveness of the proposed TD PV model is adequately assessed by evaluating its absolute current error (ACE) with the ACE in different PV models. The EOA technology is considered to be an accurate means of achieving the proper modelling of any commercial PV module.
Highlights
Renewable energy systems have received great solicitude around the globe due to various strategic issues, including the rapid exhaustion of fossil fuels, climate interests, political concerns, and the potential trend to have a healthy environment [1]-[4]
This article has exhibited a new fitness function and a novel implementation of the equilibrium optimizer algorithm (EOA) technology to optimally design the undetermined parameters of the TD model-based PV panel
The EOA technology was successfully employed for minimizing the ε, achieving the nine-parameters of the TD model
Summary
Renewable energy systems have received great solicitude around the globe due to various strategic issues, including the rapid exhaustion of fossil fuels, climate interests, political concerns, and the potential trend to have a healthy environment [1]-[4]. The precise mathematical model of such PVs is valuable in the dynamic analyses of power electronic converters that connected with such PVs, the MPP tracking techniques, and the simulation studies of such PV arrays and their power components Modelling of such PV panel is represented by a non-linear I-V curve, involving many ungiven parameters because of the limited data given in the PVs’ datasheet [7]. This paper exhibits a new approach using the EOA to find the ungiven parameters of the TD PV model, achieving a precise electrical TD modelling of the PV modules that used in the power systems simulation analyses. The EOA-based PV model parameters identification has not so far been pointed out in PV research literature
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