An Approximate Short Circuit Strategy for Transient MPPT Performance of Uniformly Irradiated Photovoltaic Modules

Abstract

This paper presents an improved strategy to provide better maximum power point tracking (MPPT) performance and increase energy yield during transient state of MPPT process. This strategy is based on the estimation of short circuit current (SCC) of the photovoltaic (PV) system without short circuit. Besides that, this strategy aims to decrease convergence time to maximum power point (MPP) by preventing real short circuit of PV source and eliminating the additional switch requirement. To determine performance of the proposed strategy, simulation studies have been performed in MATLAB/Simulink and this strategy has been compared with fractional SCC (FSCC) technique and perturb and observe (P&O) algorithm. In addition, to make validation experimentally, a low powered single ended primary inductance converter (SEPIC) is realized. Both simulation and experimental results show that proposed strategy performs better transient MPPT performance than FSCC technique and P&O algorithm.

Keywords

• Maximum power point tracking,Fractional short circuit current,photovoltaic module,perturb and observe

References

1. [1] Esram T., Chapman P.L., Comparison of photovoltaic array maximum power point tracking techniques, IEEE Transactions on Energy Conversion, vol. 22, no. 2, pp. 439-449, 2007.
2. [2] Fernia N., Petrone G., Spagnuolo G., Vitelli M., Optimization of perturb and observe maximum power point tracking method, IEEE Transactions on Power Electronics, vol. 20, no.4, pp. 963-973, 2005.
3. [3] Liu F., Duan S., Liu F., Liu B. Kang Y., A variable step size INC MPPT method for PV systems, IEEE Transactions on Industrial Electronics, vol. 55, no. 7, pp. 2622-2628, 2008.
4. [4] Belkaid A. Gaubert J. Gherbi A., Design and implementation of a high-performance technique for tracking PV peak power, IET Renewable Power Generation, vol. 11, no. 1, pp. 92-99, 2017.
5. [5] Tang L., Xu W. Mu C., Analysis for step-size optimization on MPPT algorithm for photovoltaic systems, IET Power Electronics, vol. 10, no. 13, pp. 1647-1654, 2017.
6. [6] Killi M., Samanta S., Modified perturb and observe MPPT algorithm for drift avoidance in photovoltaic systems, IEEE Transactions on Industrial Electronics, vol. 62, no. 9, pp. 5549-5559, 2015.
7. [7] Safari A., Mekhilef S., Simulation and hardware implementation of incremental conductance MPPT with direct control method using cúk converter, IEEE Transactions on Industrial Electronics, vol. 58, no. 4, pp. 1154-1161, 2011.
8. [8] Mosa M. Shadmand M.B., Balog R.S., Rub H.A., Efficient maximum power point tracking using model predictive control for photovoltaic systems under dynamic weather conditions, IET Renewable Power Generation, vol. 11, no. 1, pp. 1401-1409, 2017.

9. [9] Tey K.S., Mekhilef S., Modified incremental conductance algorithm for photovoltaic system under partial shading conditions and load variation, IEEE Transactions on Industrial Electronics, vol. 61, no. 10, pp. 5384-5392, 2014.
10. [10] Kivimäki J., Kolesnik S., Sitbon M., Suntio T. Kuperman A., Design guidelines for multiloop perturbative maximum power point tracking algorithms, IEEE Transactions on Power Electronics, vol. 33, no.2, pp. 1284-1293, 2018.
11. [11] Liu Y., Chen J., Huang J., Global maximum power point tracking algorithm for PV systems operating under partial shading conditions using segmentation search method, Solar Energy, vol. 103, pp. 350-363, 2014.
12. [12] Patel H. Agarwal V., 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, 2008.
13. [13] Başoğlu M.E., Çakır B., Hybrid global maximum power point tracking approach for photovoltaic power optimisers, IET Renewable Power Generation, vol. 12, no. 8, pp. 875-882, 2018.
14. [14] Başoğlu M.E., Çakır B., A novel voltage-current characteristic based global maximum power point tracking algorithm in photovoltaic systems, Energy, vol. 112, pp. 153-163, 2016.
15. [15] Başoğlu M.E., Çakır B., An improved incremental conductance based MPPT approach for PV modules, Turkish Journal of Electrical Engineering & Computer Sciences, vol. 23, pp. 1687-1697-2015.
16. [16] Zadeh M.J.Z., Fathi S. H., A new approach for photovoltaic arrays modeling and maximum power point estimation in real operating conditions, IEEE Transactions on Industrial Electronics, vol. 64, no. 12, pp. 9334-9343, 2017.
17. [17] Noguchi T. Togashi S., Nakamoto R., Short current pulse based maximum power point tracking method for multiple photovoltaic and converter module system, IEEE Transactions on Industrial Electronics, vol. 49, no.1, pp. 217-223, 2002.
18. [18] Jiang L.L., Nayanasiri D.R., Maskell D.L., Vilathgamuwa D.M., A hybrid maximum power point tracking for partially shaded photovoltaic systems in the tropics, Renewable Energy, vol. 76, pp. 53-65, 2015.
19. [19] Nguyen T.L., Low K., A global maximum power point tracking scheme employing direct search algorithm for photovoltaic systems, IEEE Transactions on Industrial Electronics, vol. 57, no. 10, pp. 3456-3467, 2010.
20. [20] Mohan N., Undeland T.M., and Robbins W.P., Power Electronics: Converter, Applications, and Design, Wiley, 1995, p. 315.
21. [21] Falin J., Designing DC/DC converters based on SEPIC topology, Texas Instruments, 2008.