Voltage regulation and maximum power tracking of single stage grid tied photovoltaic system at different irradiance levels

Abdul Majeed Shaikh; Muhammad Fawad Shaikh; Shoaib Ahmed Shaikh; Madad Ali Shah; Abdul Aziz Memon

doi:10.22581/muet1982.3074

Abdul Majeed Shaikh Department of Electrical Engineering, Sukkur IBA University, Sukkur, 65200, Pakistan
Muhammad Fawad Shaikh Department of Electrical Engineering, Sukkur IBA University, Sukkur, 65200, Pakistan
Shoaib Ahmed Shaikh Department of Electrical Engineering, Sukkur IBA University, Sukkur, 65200, Pakistan
Madad Ali Shah Department of Electrical Engineering, Sukkur IBA University, Sukkur, 65200, Pakistan
Abdul Aziz Memon Department of Electrical Engineering, Sukkur IBA University, Sukkur, 65200, Pakistan

DOI: https://doi.org/10.22581/muet1982.3074

Abstract

Distributed generation has played a vital role in recent times. The majority of the world's power producers are trying to produce power from distributed generation and mitigate losses. Photovoltaic is one of the most commonly used distributed resources in the world due to the availability of solar irradiance throughout the year. Moreover, it is economical and does not evolve any greenhouse gases. As solar irradiance is not uniformly available throughout the day, so at different times, unlike voltages, current and power appear. Due to this tracking of maximum power and voltage regulation are major investigated issues. So, to extract maximum power and regulate voltages algorithm and controller have been utilized. First, on a small scale, the boost converter is designed on hardware and tested with the P&O technique for tracking maximum power. After that in this paper, Perturb and observation algorithm is applied to track the maximum power and the PID controller is designed for voltage regulation in MATLAB Simulink on a large scale. Moreover, two scenarios are considered in this study, first, voltage, current and power are analyzed for a standalone system with and without MPPT. Second, Maximum power is scrutinized with a grid-tied system and THD is also calculated. MATLAB/Simulink tool is used to carry out this whole simulation work on a large scale for two-kilo watt system.