IJE TRANSACTIONS C: Aspects Vol. 31, No. 6 (June 2018) 921-931   

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H. Rahimi Mirazizi and M. Agha Shafiyi
( Received: October 06, 2017 – Accepted in Revised Form: February 06, 2018 )

Abstract    One of the key challenges of employing photovoltaic systems is to extract maximum power of the panels. This problem is known as maximum power point tracking (MPPT) technique. The MPPT stands for establishing situation in which output power of the panels reaches its maximum allowable power. In this context, this paper is to assess the technical requirements to achieve maximum output power of a number of photovoltaic (PV) panels in Z-source inverters. For the sake of simplicity and without loss of generality, a generic 7-level Z-source multi-level inverter to use with the PV panels is considered for our purpose. The conducted assessment is performed in terms of the analysis of the input resistance of the connected inverter. The simulation results showed that achieving the maximum power point (MPP) depends on the various governing factors including components of the inverter (i.e. load, frequency switching, and electric elements value), irradiance level, ambient temperature, and partial shading effect. Also, as the results demonstrate, in a number of combinations of the conditions there is not an optimum situation in terms of achieving MPPT. In addition, major parts of the findings are implemented on a practical system.


Keywords    Maximum Power Point Tracking Algorithm; Input Resistance; Z-Source Inverter; Photovoltaic Panel; Multi-level Inverter


چکیده    یکی از مسائل سیستمهای فوتوولتائیک، مسئله استحصال حداکثر توان از پانلها می باشد. این مهم با عنوان الگوریتم MPPT شناخته می شود و به معنای رهگیری حداکثر توان پانلهای خورشیدی می باشد. در این مقاله تحقق پذیری این الگوریتم در اینورتر خورشیدی هفت سطحی Z-source نوعی بررسی می شود. تحقق پذیری الگوریتم بر مبنای محاسبه و آنالیز مقاومت دیده شده از دو سر مبدل می باشد. نتایج شبیه سازی نشان می دهد که تحقق الگوریتم MPPT به پارامترهای مختلفی مانند: بار، فرکانس سوئیچینگ، مقادیر عناصر مدار، سطح تابش، دمای محیط و اثر سایه زدگی جزئی بستگی دارد. همچنین نتایج حاکی از آنست که در بسیاری از شرایط تحقق الگوریتم مذکور ممکن نیست. ضمناً بسیاری از نتایج حاصله با تست عملی سیستم نیز، مقایسه شده است.


1.     Majid, A.J., "The new role of renewable energy systems in developing gcc electricity market", International Journal of Engineering (IJE),  Vol. 4, No. 6, (2011), 507-515.

2.     Kalogirou, S.A., "Environmental benefits of domestic solar energy systems", Energy Conversion and Management,  Vol. 45, No. 18-19, (2004), 3075-3092.

3.     Han, X., Ai, X. and Sun, Y., "Research on large-scale dispatchable grid-connected pv systems", Journal of Modern Power Systems and Clean Energy,  Vol. 2, No. 1, (2014), 69-76.

4.     Joshi, P. and Arora, S., "Maximum power point tracking methodologies for solar pv systems–a review", Renewable and Sustainable Energy Reviews,  Vol. 70, (2017), 1154-1177.

5.     Alajmi, B.N., Ahmed, K.H., Finney, S.J. and Williams, B.W., "Fuzzy-logic-control approach of a modified hill-climbing method for maximum power point in microgrid standalone photovoltaic system", IEEE Transactions on Power Electronics,  Vol. 26, No. 4, (2011), 1022-1030.

6.     Ahmad, J., "A fractional open circuit voltage based maximum power point tracker for photovoltaic arrays", in Software Technology and Engineering (ICSTE), 2010 2nd International Conference on, IEEE. Vol. 1, (2010), V1-247-V241-250.

7.     Abdelsalam, A.K., Massoud, A.M., Ahmed, S. and Enjeti, P.N., "High-performance adaptive perturb and observe mppt technique for photovoltaic-based microgrids", IEEE Transactions on Power Electronics,  Vol. 26, No. 4, (2011), 1010-1021.

8.     Elgendy, M.A., Atkinson, D.J. and Zahawi, B., "Experimental investigation of the incremental conductance maximum power point tracking algorithm at high perturbation rates", IET Renewable Power Generation,  Vol. 10, No. 2, (2016), 133-139.

9.     Sher, H.A., Murtaza, A.F., Noman, A., Addoweesh, K.E., Al-Haddad, K. and Chiaberge, M., "A new sensorless hybrid mppt algorithm based on fractional short-circuit current measurement and p&o mppt", IEEE Transactions on Sustainable Energy,  Vol. 6, No. 4, (2015), 1426-1434.

10.   Larbes, C., Cheikh, S.A., Obeidi, T. and Zerguerras, A., "Genetic algorithms optimized fuzzy logic control for the maximum power point tracking in photovoltaic system", Renewable Energy,  Vol. 34, No. 10, (2009), 2093-2100.

11.   Elobaid, L.M., Abdelsalam, A.K. and Zakzouk, E.E., "Artificial neural network-based photovoltaic maximum power point tracking techniques: A survey", IET Renewable Power Generation,  Vol. 9, No. 8, (2015), 1043-1063.

12.   Trivedi, A., Gupta, A., Pachauri, R.K. and Chauhan, Y.K., "Comparison of perturb & observe and ripple correlation control mppt algorithms for pv array", in Power Electronics, Intelligent Control and Energy Systems (ICPEICES), IEEE International Conference on, IEEE., (2016), 1-5.

13.   Esram, T. and Chapman, P.L., "Comparison of photovoltaic array maximum power point tracking techniques", IEEE Transactions on Energy Conversion,  Vol. 22, No. 2, (2007), 439-449.









14.   Salas, V., Olias, E., Barrado, A. and Lazaro, A., "Review of the maximum power point tracking algorithms for stand-alone photovoltaic systems", Solar Energy Materials and Solar Cells,  Vol. 90, No. 11, (2006), 1555-1578.

15.   Roshan, Y.M. and Moallem, M., "Maximum power point tracking using boost converter input resistance control", in Industrial Electronics (ISIE), 2012 IEEE International Symposium on, IEEE., (2012), 1795-1800.

16.   Roshan, Y.M. and Moallem, M., "Maximum power point tracking using boost converter input resistance control by means of lambert w-function", in Power Electronics for Distributed Generation Systems (PEDG), 2012 3rd IEEE International Symposium on, IEEE., (2012), 195-199.

17.   Zanotti, J.W., dos Santos, W.M. and Martins, D.C., "The new mppt method for pv systems employing input characteristic impedance", in Power Electronics Conference (COBEP), 2013 Brazilian, IEEE., (2013), 556-562.

18.   dos Santos, W.M. and Martins, D.C., "Digital mppt technique for pv panels with a single voltage sensor", in Telecommunications Energy Conference (INTELEC), 2012 IEEE 34th International, IEEE., (2012), 1-8.

19.   Li, S., "A maximum power point tracking method with variable weather parameters based on input resistance for photovoltaic system", Energy Conversion and Management,  Vol. 106, (2015), 290-299.

20.   Kotak, V. and Tyagi, P., "Dc to dc converter in maximum power point tracker", International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering,  Vol. 2, No. 12, (2013), 6115-6125.

21.   Husain, M.A., Tariq, A., Hameed, S., Arif, M.S.B. and Jain, A., "Comparative assessment of maximum power point tracking procedures for photovoltaic systems", Green Energy & Environment,  Vol. 2, No. 1, (2017), 5-17.

22.   Pidaparthy, S.K. and Choi, B., "Input impedances of pwm dc-dc converters: Unified analysis and application example", J. Power Electron.,  Vol. 16, No. 6, (2016), 1-12.

23.   Nandhini, G.M. and Ganimozhi, T., "New hybrid cascaded multilevel inverter",  International Journal of Engineering-Transactions B: Applications Vol. 26, No. 11, (2013), 1377-1383.

24.   Peng, F.Z., "Z-source inverter", IEEE Transactions on Industry Applications,  Vol. 39, No. 2, (2003), 504-510.

25.   Pilehvar, M.S., Mardaneh, M. and Rajaei, A., "An analysis on the main formulas of z-source inverter", Scientia Iranica. Transaction D, Computer Science & Engineering, Electrical,  Vol. 22, No. 3, (2015), 1077-1083.

26.   Cespedes, M. and Sun, J., "Impedance modeling and analysis of grid-connected voltage-source converters", IEEE Transactions on Power Electronics,  Vol. 29, No. 3, (2014), 1254-1261.

27.   Rashid, M.H., "Power electronics handbook, Butterworth-Heinemann,  The third edition, Florida, USA: Academic Press; 2011.

28.          Pan, L., "Analysis of photovoltaic module resistance characteristics",  International Journal of Engineering-Transactions B: Applications Vol. 26, No. 11 (2013), 1369-1376.

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