An analytical approach for maximum power point calculation for photovoltaic system

The power generated by photovoltaic (PV) systems is highly dependent on operating and environmental conditions. In order to increase the efficiency of PV systems, several methods have been developed to track the maximum power point (MPP). This paper proposes an analytical method that introduces a new expression for the extraction of the value of voltage and current at MPP based on the five parameters single-diode model. The method is able to provide the MPP accurately and quickly, thus ensuring that the operating point of the system is always the one that guarantees the maximum efficiency. The accuracy of the proposed method has been evaluated by numerical test, but also verified with the Elgar PV Simulator ET600X. Lastly, the implementation in prototype circuit board EK-TM4C1294XL from Texas Instruments testifies its capabilities for real-time tracking of MPPT.

[1]  B. Asaei,et al.  An Analytical Solution for Tracking Photovoltaic Module MPP , 2013, IEEE Journal of Photovoltaics.

[2]  Antonino Laudani,et al.  High performing extraction procedure for the one-diode model of a photovoltaic panel from experimental I–V curves by using reduced forms , 2014 .

[3]  Ghias Farivar,et al.  A novel analytical solution for the PV-arrays maximum power point tracking problem , 2010, 2010 IEEE International Conference on Power and Energy.

[4]  Sudarshan R. Nelatury.  A maximum power point algorithm using the Lagrange method , 2013 .

[5]  Honghua Wang,et al.  Maximum Power Point Tracking of Photovoltaic Generation Based on the Optimal Gradient Method , 2009, 2009 Asia-Pacific Power and Energy Engineering Conference.

[6]  William A. Beckman,et al.  Improvement and validation of a model for photovoltaic array performance , 2006 .

[7]  Avraham Adler,et al.  Lambert-W Function , 2015 .

[8]  A. Salvini,et al.  Implementation of a neural MPPT algorithm on a low-cost 8-bit microcontroller , 2014, 2014 International Symposium on Power Electronics, Electrical Drives, Automation and Motion.

[9]  Soubhagya Kumar Dash,et al.  Maximum power point tracking (MPPT) techniques: Recapitulation in solar photovoltaic systems , 2016 .

[10]  Alessandro Salvini,et al.  A neural networks-based maximum power point tracker with improved dynamics for variable dc-link grid-connected photovoltaic power plants , 2013 .

[11]  Efstratios I. Batzelis,et al.  Direct MPP Calculation in Terms of the Single-Diode PV Model Parameters , 2015, IEEE Transactions on Energy Conversion.

[12]  Gehan A. J. Amaratunga,et al.  Analytic Solution to the Photovoltaic Maximum Power Point Problem , 2007, IEEE Transactions on Circuits and Systems I: Regular Papers.

[13]  Jaber A. Abu Qahouq,et al.  Study and evaluation of load current based MPPT control for PV solar systems , 2011, 2011 IEEE Energy Conversion Congress and Exposition.

[14]  A. Laudani,et al.  Identification of the one-diode model for photovoltaic modules from datasheet values , 2014 .