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A Study on the Effect of Shading on a Photovoltaic Module
New Phys.: Sae Mulli 2018; 68: 1215~1224
Published online November 30, 2018;
© 2018 New Physics: Sae Mulli.

Ankhzaya BAATARBILEG, Zulmandakh OTGONGEREL, Gae-Myoung LEE*

Department of Electrical Engineering, Jeju National University, Jeju 63243, Korea
Correspondence to:
Received September 11, 2018; Revised October 25, 2018; Accepted October 30, 2018.
cc This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Most solar photovoltaic (PV) modules frequently get shadowed, completely or partially, resulting in a reduction of PV generation. This paper presents and compares the results from simulations and experimental measurements of the power output from a single PV module under various shading conditions. The study was carried out with a 90 W PV module and a 250 W PV module. The shaded area was increased from 0 to 100% for both variable and constant irradiances to analyze the effect of fluctuations in the solar irradiance certain shading conditions. The effect of shading for irradiance levels from 100 to 900 W/m$^2$ was investigated. Results showed that for every 100 W/m$^2$ decrease in the solar irradiance level, the power output decreased by 9, 0.7 and 1.5 W at 0, 25 and 50% shading, respectively. For solar irradiance levels higher than 500 W/m$^2$, the temperature increased by 1.6, 2.7 and 1.1 $^\circ$C at 0, 25 and 50% shading, respectively, for every 100 W/m$^2$ increase in the irradiance.
PACS numbers: 88.40.H-,
Keywords: Effect of shading, Photovoltaic module, Shading profiles

February 2019, 69 (2)
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