PROGRESS IN PHOTOVOLTAICS: RESEARCH AND APPLICATIONS Prog. Photovolt: Res. Appl. 2008; 16:141–149 Published online 14 September 2007 in Wiley InterScience () DOI: Research SHORT COMMUNICATION Effects of Shadowing on Photovoltaic Module Performance S. Silvestre*,y and A. Chouder Electronics Engineering Department, ., C/Jordi Girona 1-3, Mo`dul C4, Campus Nord, 08034 Barcelona, Spain A procedure of simulation and modelling PV modules’ performance, working partially shadowed, is presented. Several shadow rates have been tested on a single cell forming part of a PV module having 36 solar cells serially connected, and the influence of shadow rate in most of the important PV module characteristic parameters has been correlation between PV module output lowering due to shadowing and the variation of resistive losses is also reported. Copyright # 2007 John Wiley & Sons, Ltd. key words: power losses; characterisation; modelling; simulation; resistive effects Received 26 January 2007; Revised 29 May 2007 INTRODUCTION motivated recently new approaches in hot spot investi- gations on PV modules. The reduction of output power in PV modules can be The aim of this work is to study the variation of PV attributed
