An Improved MPPT algorithm for Performance Improvement of 50 kW Grid Connected PV System

Navinkumar L. Rao; Rahul Somalwar; Kantilal Joshi; Partha Sarathi Subudhi

An Improved MPPT algorithm for Performance Improvement of 50 kW Grid Connected PV System

Navinkumar L. Rao, Rahul Somalwar, Kantilal Joshi, Partha Sarathi Subudhi

Abstract

In a grid-connected system, highly non-linear P-V characteristics of solar system having a challenging issues like maximum power point tracking (MPPT). During change in weather condition, it becomes more complex to handle this issue. To keep the output voltage constant in P-V array is even more challenging when PV system is interconnected with grid utility. This paper presents the design and analysis of an improved MPPT control approach for three-phase PV grid-connected system. Here, a medium size 50 kW grid connected PV model is designed and simulated. A single diode model is used for investigation. A DC-DC converter is applied to operate and control above system with an improved MPPT algorithm which maintains the voltage at inverter side constant by controlling the duty ratio for extracting maximum power. The three phase Voltage Source Inverter (VSI) along with voltage and current controller is connected to AC Utility grid through step-up transformer and PLL synchronization. This system is implemented using MATLAB/Simulink® and performance characteristics have been plotted under different insolation conditions. Simulation result shows that the proposed algorithm achieves 96-98 % efficiency which is better than traditional techniques. Furthermore, the algorithm achieves 30% faster tracking speed and reduces steady-state oscillations to less than 1%.

Keywords

Grid; Maximum Power Point Tracking (MPPT); Photovoltaic (PV); Phase Locked Loop (PLL); Voltage Source Inverter (VSI)

Full Text:

PDF

References

P. K. Bonthagorla, S. Mikkili, “Performance investigation of hybrid and conventional PV array configurations for grid-connected/standalone PV systems”, CSEE Journal of Power and Energy Systems, 2020.

J. D. Mondol, Y. Yohanis, M. Smyth, and B. Norton, “Long term performance analysis of a grid connected photovoltaic system in Northern Ireland”, Energy Conversion and Management, vol. 47, no. 18–19, pp. 2925–2947, Nov. 2006.

O. Abdel-Rahim, “A new high gain DC-DC converter with model-predictive-control based MPPT technique for photovoltaic systems”, CPSS Transactions on Power Electronics and Applications, vol. 5, no. 2, pp. 191–200, Jun. 2020.

J. Gnanavadivel, M. Kalarathi, and K. Prakash, “Analysis of single switch step up DC-DC converter with switched inductor-switched capacitor cells for PV system”, International Journal of Applied Power Engineering (IJAPE), vol. 13, no. 1, pp. 20–29, Dec. 2023.

H. Patel and V. Agarwal, “Maximum power point tracking scheme for PV systems operating under partially shaded conditions”, IEEE Transactions on Industrial Electronics, vol. 55, no. 4, pp. 1689–1698, Apr. 2008.

M. A. Masoum, H. Dehbonei, and E. F. Fuchs, “Theoretical and experimental analyses of photovoltaic systems with voltage and current-based maximum power point tracking”, IEEE Power Engineering Review, vol. 22, no. 8, pp. 62–62, Aug. 2002.

L. Gao, R.A. Dougal, S. Liu and A. P. Iotova, “Parallel-connected solar PV system to address partial and rapidly fluctuating shadow conditions”, EEE Transactions on Industrial Electronics, vol. 56, no. 5, pp. 1548–1556, 2009.

W. Xiao, N. Ozog, and W. G. Dunford, “Topology study of photovoltaic interface for maximum power point tracking”, IEEE Transactions on Industrial Electronics, vol. 54, no. 3, pp. 1696–1704, Jun. 2007.

D. Dondi, D. Brunelli, L. Benini, P. Pavan, Alessandro Bertacchini, and L. Larcher, “Photovoltaic cell modeling for solar energy powered sensor networks”, Jan. 2007.

M. Abdulkadir, A. H. M. Yatim, and S. T. Yusuf, “An Improved PSO-Based MPPT control strategy for photovoltaic systems”, International Journal of Photoenergy, vol. 2014, p. e818232, Jun. 2014.

N. Yadav and D.K. Sambariya, “Mathematical modelling and simulation of photovoltaic module using MATLAB/SIMULINK”, Jul. 2018.

M. Dehghani, M. Taghipour, G. B. Gharehpetian, and M. Abedi, “Optimized fuzzy controller for MPPT of grid-connected PV systems in rapidly changing atmospheric conditions”, Journal of Modern Power Systems and Clean Energy, vol. 9, no. 2, pp. 376–383, 2021.

F. Fateh, W. N. White, and D. Gruenbacher, “A maximum power tracking technique for grid-connected DFIG-based wind turbines”, IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 3, no. 4, pp. 957–966, Dec. 2015.

G. S. Reddy, M. Premkumar, S. Ravi, and Laith Abualigah, “An intelligent converter and controller for electric vehicle drives utilizing grid and stand-alone solar photovoltaic power generation systems”, International Journal of Applied Power Engineering (IJAPE), vol. 12, no. 3, pp. 255–255, Jul. 2023.

Y. Zhao, A. An, Y. Xu, Q. Wang, and M. Wang, “Model predictive control of grid-connected PV power generation system considering optimal MPPT control of PV modules”, Protection and Control of Modern Power Systems, vol. 6, no. 1, Oct. 2021.

M. K. Kar, S. Kanungo, S. Dash, and R. N. R. Parida, “Grid connected solar panel with battery energy storage system”, International Journal of Applied Power Engineering (IJAPE), vol. 13, no. 1, pp. 223–233, Mar. 2024.

Y. Ouberri, H. Yatimi, and E. Aroudam, “Industrial automation PLC-based modeling and diode ideality factor impact on PV characteristics”, Jul. 2019.

Z. Yi, Y. Xu, W. Gu, and Z. Fei, “Distributed model predictive control based secondary frequency regulation for a microgrid with massive distributed resources”, IEEE Transactions on Sustainable Energy, vol. 12, no. 2, pp. 1078–1089, Apr. 2021.

E. I. Batzelis, S. A. Papathanassiou, and B. C. Pal, “PV system control to provide active power reserves under partial shading conditions”, IEEE Transactions on Power Electronics, vol. 33, no. 11, pp. 9163–9175, Nov. 2018.

J. Hossain, N. Sakib, E. Hossain, R. Bayindir, “Modelling and simulation of solar plant and storage system: a step to microgrid technology”, International Journal of Renewable Energy Research, no. v7i2, 2017.

M. R. Modabbernia, A. R. Sahab, M. T. Mirzaee, and Kazem Ghorbany, “The state space average model of boost switching regulator including all of the system uncertainties”, Advanced materials research, vol. 403–408, pp. 3476–3483, Nov. 2011.

L. Shang, H. Guo, and W. Zhu, “An improved MPPT control strategy based on incremental conductance algorithm”, Protection and Control of Modern Power Systems, vol. 5, no. 1, Jun. 2020.

D. Venkatramanan, V. John, “Dynamic modeling and analysis of buck converter based solar PV charge controller for improved MPPT performance”, IEEE Transactions on Industry Applications, 2019, 55(6), pp. 6234–6246.

J. Wang, X. Liu, Q. Xiao, D. Zhou, H. Qiu, and Y. Tang, “Modulated model predictive control for modular multilevel converters with easy implementation and enhanced steady-state performance”, IEEE Transactions on Power Electronics, vol. 35, no. 9, pp. 9107–9118, Sep. 2020.

M. B. H. Rhouma, A. Gastli, L. Ben Brahim, F. Touati, and M. Benammar, “A simple method for extracting the parameters of the PV cell single-diode model”, Renewable Energy, vol. 113, pp. 885–894, Dec. 2017.

M. ?alasan, D. Jovanovi?, V. Rubeži?, S. Mujovi?, S. ?ukanovi?, “Estimation of single-diode and two-diode solar cell parameters by using a chaotic optimization approach”, Energies, vol. 12, no. 21, p. 4209, Nov. 2019.

Y. Shan, J. Hu, and J. M. Guerrero, “A model predictive power control method for PV and energy storage systems with voltage support capability”, IEEE Transactions on Smart Grid, pp. 1018–1029, 2019.

A. K. Maurya, Y. K. Chauhan, R. K. Mishra, “Fuel cell integrated with five level VSI for industrial pump applications”, International Journal of Renewable Energy Research, pp. 1-7, 2013.

A. Berboucha, S. Aissou, I. Colak, K. Djermouni, A. Belkaid, E. Amirouche, K. Kayisli, “Energy management of DC microgrid-based photovoltaic/battery and super capacitor”, 2024 13th International Conference on Renewable Energy Research and Applications (ICRERA), 2024.

K. Pourhossein, E. D. G. Anccas, D. Schulz, “Extracting an experimental formulation for power loss prediction in a laboratory-scale grid-forming converter”, 2024 13th International Conference on Renewable Energy Research and Applications (ICRERA), 2024.

M. Chalbi, R. Kallel, G. Boukettaya, “Study of a low voltage DC micro grid based on a solid-state transformer under different operating conditions in smart grid distribution”, International Journal of Renewable Energy Research, Vol. 14, Issue 4 pp. 1-16, 2024.

P. Garg, V. Sharma, V. K. Sharma, A. Gupta, “Simulation design & performance evaluation of grid connected 100 kW solar power plant”, International Journal of Renewable Energy Research, Vol. 14, Issue 3 pp. 660-73, 2024.

DOI (PDF): https://doi.org/10.20508/ijsmartgrid.v9i1.381.g375