Modeling a Grid Connected Photovoltaic System with Perturb and Observe based Maximum Power Point Tracking
DOI:
https://doi.org/10.13052/dgaej2156-3306.2843Keywords:
Current controlled voltage source inverter, distributed generation, dual inverter, maximum power point tracking, perturb and observe, photovoltaic, three level inverter,Abstract
This article deals with the integration study of distributed generation
(DG) in the form of a photovoltaic (PV) plant in a three-phase system.
Here the active power generated by the photovoltaic (PV) plant is injected
into the grid system through a current controlled dual inverter topology.
The main contribution in this article is the dual inverter topology. In this
topology, a three level inverter output is obtained which reduces the PV
injected current harmonic distortion into the grid. The control algorithm
used in this article is simple and easy to implement. The PV system is
operated through a maximum power point tracking (MPPT) stage. Perturb
& Observe (P&O) is the modeling approach of MPPT system operation.
The system is simulated and analyzed for a different set of loads with
renewable source at different atmospheric conditions using MATLAB/
Simulink tool. The grid current becomes sinusoidal with three levels
inverter and compared to existing three levels methods the dual inverter
method is simple and easy to implement.
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