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[IEEE 2019 7th International Renewable and Sustainable Energy Conference (IRSEC) - Agadir, Morocco (2019.11.27-2019.11.30)] 2019 7th International Renewable and Sustainable Energy Conference (IRSEC) - A Genetic Algorithm based Improve P&O-PI MPPT Controller for Stationary and Tracking Grid-Connected Photovoltaic System
摘要： this paper deals the performance comparison and efficiencies of single-axis and dual-axis tracking PV system to an identical fixed-mount PV system for two typical clear sunny days (Ghardaia area), two typical days are chosen, the first day in winter and the second day in the summer. For the three types of PV systems, P&O-PI MPPT techniques optimized with a genetic algorithm is proposed. This paper has two different objectives. 1stly, a proposed MPPT technique has been presented to optimize P&O-PI controller via the GA technique to increase the tracking response of MPP with high efficiency and that improves the limitations of the traditional MPPT techniques. 2ndly, a performance comparison of efficiencies of single-axis and dual-axis tracking system and an identical fixed inclination system .Simulation results with MATLAB/SIMULINK are presented and discussed to verify the satisfactory performance of the proposed MPPT control, in which the optimized P&O-PI controller by GA algorithms gives the better performance. The simulation results also have shown that both single-axis and dual-axis are highly efficient in terms of the electrical energy output when compared to the fixed mount system. The results show the effectiveness of the tracking system of about 25% in energy efficiency.
关键词： grid,photovoltaic system,dual‐axis tracking,P&O-PI,fixed array,boost converter,Genetic algorithm,single axis tracking,MPPT control
更新于2025-09-23 15:21:01
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Comparative life cycle assessment of fixed and single axis tracking systems for photovoltaics
摘要： Single axis tracking systems (SATS) are becoming one of the most common types of solar photovoltaic (PV) installations due to improved performance compared to fixed systems. The impact of SATS in terms of various environmental indicators has yet to be fully quantified. The main goal of this study is to understand the environmental differences between fixed and SATS PV systems. For this reason, a comparative LCA between fixed and SATS was performed. A secondary goal is to determine the environmental impact of both systems under different scenarios that includes manufacturing in high and low CO2 intensive electricity grids, installation in different locations and different energy displacement options. The study is attributional and has been calculated with the cut-off modeling of ecoinvent 3.1. Calculations were performed with the software openLCA 1.7.4 with impacts obtained based on ReCiPe, cumulative energy demand and cumulative exergy demand methods.
关键词： Solar energy,Sustainability,Single axis tracking systems,Life cycle assessment,Carbon payback time
更新于2025-09-16 10:30:52
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[IEEE 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Chicago, IL, USA (2019.6.16-2019.6.21)] 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - The Case for Custom TMYa??s: Examples Using the NSRDB
摘要： A typical meteorological year (TMY) data set essentially represents an hourly compilation of median months constructed using multi-year datasets. Although TMY data sets are generated from irradiance data in the horizontal plane, they are used in photovoltaic (PV) modeling for systems inclined to various angles. This paper demonstrates that a POA TMY (plane of array TMY) generated by selecting median months from a timeseries dataset produces multi-year POA significantly different results than a POA TMY generated by transposing a TMY dataset constructed from horizontal data. In some months the differences can be more than 3%. These results point to the need for generating TMY’s using POA irradiance timeseries representing the orientation at which PV panels will be deployed.
关键词： NSRDB,POA,latitude tilt,typical POA year,single-axis tracking,typical meteorological year,TGPY,typical GHI-based POA year,TPY,plane of array
更新于2025-09-16 10:30:52