• Bhogavilli Jahnavi
• Dr G.V.Siva Krishna Rao

In grid connected photovoltaic (PV) systems, maximum power point tracking (MPPT) algorithm plays an important role in optimizing the solar energy efficiency. In this paper, fuzzy logic control based MPPT method has been proposed for searching maximum power point (MPP) fast and exactly. This paper presents the integration of photovoltaic system to the grid control with power electronic converters and control strategies are discussed. Initially mathematical modelling of PV module is done, to extract maximum power from PV system a boost converter is designed and fuzzy logic control is implemented to track the maximum power point. A voltage source full bridge DC-AC converter for interfacing between PV system and single phase grid. A single phase grid is connected to the PV system using a single phase inverter where the gate pulses of the inverter is pulse width modulation technique(PWM). The voltage and current control is provided by the PI and PR controller and also phase locked loop is provided for fixing the phase shift. interconnection between grid and inverter is done by LCL filter to reduce the harmonics in grid current.

Photovoltaic system, fuzzy logic controller, boost converter, maximum power point tracking, single phase voltage source full bridge Inverter, grid, Proportional integral controller and Proportionalresonant

"Integration of photovoltaic system to the grid and obtain MPPT using fuzzy logic control", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 8, page no.e571-e576, August-2022, Available :http://www.jetir.org/papers/JETIR2208464.pdf

"Integration of photovoltaic system to the grid and obtain MPPT using fuzzy logic control", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 8, page no. ppe571-e576, August-2022, Available at : http://www.jetir.org/papers/JETIR2208464.pdf