Partial Shading Detection in Solar System Using Single Short Pulse of Load

Open access


A single photovoltaic panel under uniform illumination has only one global maximum power point, but the same panel in irregularly illuminated conditions can have more maxima on its power-voltage curve. The irregularly illuminated conditions in most cases are results of partial shading. In the work a single short pulse of load is used to extract information about partial shading. This information can be useful and can help to make some improvements in existing MPPT algorithms. In the paper the intrinsic capacitance of a photovoltaic system is used to retrieve occurrence of partial shading.


  • [1] Auswertungstabellen zur Energiebilanz Deutschland 1990 bis 2014 (2016). AG Energiebilanzen (AGEB),

  • [2] Masoum, A.S., Padovan, F., Masoum, M.A.M. (2010). Impact of partial shading on voltage-and current-based maximum power point tracking of solar modules. IEEE PES General Meeting, 1−5.

  • [3] Balasubramanian, I.R., Ganesan, S.I., Chilakapati, N. (2014). Impact of partial shading on the output power of PV systems under partial shading conditions. IET Power Electronics, 7(3), 657−666.

  • [4] Hiren, P., Agarwal, V. (2008). MATLAB-based modeling to study the effects of partial shading on PV array characteristics. IEEE transactions on energy conversion, 23(1), 302−310.

  • [5] d’Alessandro, V., Pierluigi, G., Santolo, S. (2014). A simple bipolar transistor-based bypass approach for photovoltaic modules. IEEE Journal of Photovoltaics, 4(1), 405−413.

  • [6] Kojima, H., et al. (2014). Accurate and rapid measurement of high-capacitance PV cells and modules using a single short pulse light. 2014 IEEE 40th Photovoltaic Specialist Conference (PVSC). IEEE, 2014. Survey of Maximum PPT techniques of PV Systems, Nasr, A.A.A., Saied, M.H., Mostafa, M.Z., Abdel-Moneim, T.M.

  • [7] Brambilla, A., et al. (1999). New approach to photovoltaic arrays maximum power point tracking. (1999). Power Electronics Specialists Conference, PESC 99, 30th Annual IEEE, 2.

  • [8] Noguchi, T., Shigenori, T., Nakamoto, R. (2002). Short-current pulse-based maximum-power-point tracking method for multiple photovoltaic-and-converter module system. IEEE Transactions on Industrial Electronics, 49(1), 217−223.

  • [9] Mroczka, J., Ostrowski, M. (2015). Maximum power point search method for photovoltaic panels which uses a light sensor in the conditions of real shading and temperature. SPIE Optical Metrology. International Society for Optics and Photonics.

  • [10] Mroczka, J., Ostrowski, M. (2014). A hybrid maximum power point search method using temperature measurements in partial shading conditions. Metrol. Meas. Syst., 21(4), 733−740.

  • [11] Safari, A., Mekhilef, S. (2011). Simulation and hardware implementation of incremental conductance MPPT with direct control method using cuk converter. IEEE Transactions on Industrial Electronics, 58(4), 1154−1161.

Metrology and Measurement Systems

The Journal of Committee on Metrology and Scientific Instrumentation of Polish Academy of Sciences

Journal Information

IMPACT FACTOR 2016: 1.598

CiteScore 2016: 1.58

SCImago Journal Rank (SJR) 2016: 0.460
Source Normalized Impact per Paper (SNIP) 2016: 1.228


All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 18 18 18
PDF Downloads 2 2 2