Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 31100
Analysis of Partially Shaded PV Modules Using Piecewise Linear Parallel Branches Model

Authors: Yaw-Juen Wang, Po-Chun Hsu


This paper presents an equivalent circuit model based on piecewise linear parallel branches (PLPB) to study solar cell modules which are partially shaded. The PLPB model can easily be used in circuit simulation software such as the ElectroMagnetic Transients Program (EMTP). This PLPB model allows the user to simulate several different configurations of solar cells, the influence of partial shadowing on a single or multiple cells, the influence of the number of solar cells protected by a bypass diode and the effect of the cell connection configuration on partial shadowing.

Keywords: Equivalent Circuit, partial shading, photovoltaic module, EMTP, Cell Connection Configurations

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2571


[1] J. W. Bishop, "Computer Simulation of The Effects of Electrical Mismatches in Photovoltaic Cell Interconnection Circuit," Solar Cells, 25, 1988, pp. 73-89.
[2] V. Quaschning and R. Hanitsch, "Numerical simulation of photovoltaic generators with shaded cells," 30th Universities Power Engineering Conference, 5-7 Sept 1995,pp. 583-586.
[3] J. A. Gow and C. D. Manning, "Development of a photovoltaic array model for use in power-electronics simulation studies," IEE Proceedings- Electric Power Applications, Vol. 146, No.2, March 1999, pp. 193-200.
[4] L. Castaner and S. Silvestre, Modelling Photovoltaic Systems Using Pspice, New York, John Wiley & Sons, 2003.
[5] M. Veerachary, " PSIM circuit-oriented simulator model for the nonlinear photovoltaic sources," IEEE Trans. Aerospace and Electronic Systems, Vol. 42, No. 2, pp.735-740, April 2006.
[6] Y. J. Wang and L. Pierrat, "Measurement of photovoltaic cell parameters for EMTP simulation," in Proc. 3rd European PV-Hybrid and Mini-grid Conference, Aix-en-Provence, France, 2006, pp. 194-199.
[7] Tomas Markvart, Solar Electricity, 2nd ed., New York, John Wiley & Sons, 2000.
[8] M. C. Alonso-Garcia, J. M. Ruiz and W. Herrmann, "Computer simulation of shading effects in photovoltaic arrays," Renewable Energy, Vol. 31, No. 12, pp. 1986-1993, 2006.
[9] M. C. Alonso-Garcia, J..M. Ruiz and F. Chenlo, "Experimental study of mismatch and shading effects in the I-V characteristic of a photovoltaic module," Solar Energy Materials & Solar Cells, Vol. 90, pp. 329-340, 2006.