Optimization of Power Generation and Reliability Enhancement of Photovoltaic System
M. K. Naga Mounika1, N. Bhupesh Kumar2

1M. K. Naga Mounika, PG Scholar, Department of Electrical & Electronics Engineering, Sir C. R. Reddy College of Engineering, Eluru (Andhra Pradesh), India.
2Dr. N. Bhupesh Kumar, Associate Professor, Department of Electrical & Electronics Engineering, Sir C. R. Reddy College of Engineering, Eluru (Andhra Pradesh), India.  

Manuscript received on 10 December 2017 | Revised Manuscript received on 18 December 2017 | Manuscript Published on 30 December 2017 | PP: 43-49 | Volume-7 Issue-2, December 2017 | Retrieval Number: B5236127217/17©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: In this paper a PV array mathematical model with different MPPT techniques in a standalone mode is validated. The PV array characteristics are highly non-linear as they depend on irradiation and temperature. Therefore it is important to extract the optimum possible power from PV panels with control algorithms. The total efficiency of photovoltaic generation conversion is reduced due to partial shading. PV array along with buck converter and MPPT controller are simulated in MATLAB/Simulink environment. When climatic conditions vary, the parameters of capacitance and inductance of DC-DC converter will change to attain optimal efficiency. The effect of climatic conditions on design of two elements (inductance, capacitance) for buck topology is also discussed. This paper presents different MPPT techniques like Perturb & observe, Incremental conductance, Fractional open circuit voltage, Constant current and intelligent control methods to extract the optimum power from PV panel. This paper proposes differential power converter to overcome the PV partial shading problem along with INC control algorithm.
Keywords: Maximum Power Point Tracking (MPPT), Perturb & Observe (P&O), Incremental Conductance (INC), Fuzzy Logic Controller, partial shading, Differential power converter.

Scope of the Article: Fuzzy Logic