Abstract
Supercapacitors have been used for the first time as load to PV cell/modules for characterizing their behavior. In this paper, a novel and essentially simple design of a V–I plotter is attempted with a bank of super capacitors (SC) as the load to the PV modules of varying capacities. The distinct advantages of the SC's over the erstwhile capacitors have been comparatively experimented. Finally, an elaborate regression analysis (RA) of principal electrical parameters have yielded consistently high values exceeding 0.993 experimental evaluation of quality parameters like fill-factor (FF) and performance ratio (PR) have yielded a range of 70–79% while PR values frequently ranges from 90% to 99%. Suitability of poly-Si PV modules at the level of PV panel configurations have been ascertained through experimental estimate of series and parallel relative power loss (RPL) values. Typical values below 2% obtained for widely varying climatic level is also a quality indicator for the new metrology in question. Such a prototype I–V plotter is expected to be duly considered for commercial testing applications in PV industries.
Highlights
The rapid penetration of the solar photovoltaic systems (SPS) into the electrical networks at different voltage levels is an accepted global phenomenon
Authors of this paper have introduced a new technique where Supercapacitors have replaced the capacitors with the plotting time modeled out as a function of four basic electrical parameters (Isc, Voc, Im, Vm) along with the effective series resistance (ESR) value of the super capacitors (SC) bank
It is to be noted that the PV Modules experimented upon are all Poly-Si PV modules as such modules are the predominant ones in the current Indian market
Summary
The rapid penetration of the solar photovoltaic systems (SPS) into the electrical networks at different voltage levels is an accepted global phenomenon. Penetration of renewable energy sources (RES) into the average European grid is expected to cross 30% by the end of 2022, 12% of such shares being contributed from photovoltaics [1]. India has already embarked on a policy [2] of delivering at least 20% of grid-power through renewable energy sources (RES) by 2020. Massive efforts are currently being undertaken in India for large-scale installations of PV power plants of megawatts capacity. This calls for an appropriate and smart metrological procedure for selecting the PV modules, acting as the building blocks to the high capacity PV arrays [1]. The section is essentially devoted to a review of the existing metrological approaches practiced in PV
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