• YENDLURI SUNIL KUMAR
• Dr.G.V.SIVA KRISHNA RAO

ABSTRACT: Grid -connected photovoltaic (PV) systems are increasingly attracting the attention of industry and academia as a means of providing an alternative to conventional fossil-fuel generation. In grid-connected PV systems, a key consideration is the design and operation of power converters and how to achieve high efficiency for different power configurations. The modelling, design, and control of a solar supply (PVS) for a single-phase grid system are presented in this work. A step-up converter (SUC) is used in the two-stage conversion process between the photovoltaic panel and the voltage source converter's dc bus (VSC). An SUC switching method based on fuzzy logic control (FLC) is developed for the maximum power tracking (MPT) at PVS terminals. Utilizing a modified multilayer fifth-order generalised integrator (mMLFOGI), a band-pass filter (BPF) is created to estimate the synchronising grid supply signals for the control of VSC. Under grid disturbances such dc offsets, frequency fluctuations, voltage sag, swell, and harmonics, the mMLFOGI based BPF provides appropriate synchronisation of VSC. These suggested control strategies are modelled in MATLAB.

– Fuzzy logic, maximum power tracking (MPT), modified multilayer fifth order generalized integrator (mMLFOGI), photovoltaic supply (PVS), voltage source converter (VSC).

"GRID TIED SINGLE PHASE PHOTOVOLTAIC SYSTEMS WITH FUZZY LOGIC CONTROLLER", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 10, page no.b122-b131, October-2022, Available :http://www.jetir.org/papers/JETIR2210124.pdf

"GRID TIED SINGLE PHASE PHOTOVOLTAIC SYSTEMS WITH FUZZY LOGIC CONTROLLER", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 10, page no. ppb122-b131, October-2022, Available at : http://www.jetir.org/papers/JETIR2210124.pdf