Abstract
It is a well-documented fact that partial shading of a photovoltaic array reduces it output power capability. However, the relative amount of such degradation in energy production cannot be determined in a straight forward manner, as it is often not proportional to the shaded area. This paper clarifies the mechanism of partial PV shading on a number of PV cells connected in series and/or parallel with and without bypass diodes. The analysis is presented in simple terms and can be useful to someone who wishes to determine the impact of some shading geometry on a PV system. The analysis is illustrated by measurements on a commercial 70 W panel, and a 14.4 kW PV array.
Original language | English |
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Title of host publication | Proceedings of RES'08 |
Publisher | WSEAS Press |
Publication date | 2008 |
Publication status | Published - 2008 |
Event | WSEAS/IASME International Conference on Renewable Energy Sources (RES'08) - Corfu, Greece Duration: 26 Oct 2008 → 28 Oct 2008 Conference number: 2 |
Conference
Conference | WSEAS/IASME International Conference on Renewable Energy Sources (RES'08) |
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Number | 2 |
Country/Territory | Greece |
City | Corfu |
Period | 26/10/2008 → 28/10/2008 |