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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/17796

Title: Indoor measurement of photovoltaic device characteristics at varying irradiance, temperature and spectrum for energy rating
Authors: Bliss, Martin
Betts, Thomas R.
Gottschalg, Ralph
Keywords: Indoor measurement
Performance matrix
Energy rating
LED-based solar simulator
Photovoltaics
Solar cell
Issue Date: 2010
Publisher: © IOP Publishing Ltd
Citation: BLISS, M. BETTS, T.R. and GOTTSCHALG, R., 2010. Indoor measurement of photovoltaic device characteristics at varying irradiance, temperature and spectrum for energy rating. Measurement Science & Technology, 21 (11), article 115701
Abstract: The first three-dimensional performance matrix for use in photovoltaic (PV) energy rating is reported utilizing a novel energy rating solar simulator based on LEDs. Device characteristics are measured indoors at varying irradiance (G), temperature (T) and spectrum (E). This opens the possibility for a more accurate measurement system for energy yield prediction of PV devices, especially for devices with high spectral dependence such as wide bandgap solar cells as they take into account spectral changes in the light. The main aspects of the LED-based solar simulator used are briefly described. A measurement method is developed and detailed in the paper, which takes into account the current imperfections in the achievable spectrum. Measurement results for a crystalline silicon solar cell are used to demonstrate the measurement approach. An uncertainty analysis of the measurement system is given, resulting in an overall absolute uncertainty of 4.3% (coverage factor k = 2) in maximum power measurements at 765 W m−2 irradiance with scope for further improvements.
Description: This was accepted for publication in the journal Measurement Science and Technology. The definitive published version can be found at: http://dx.doi.org/10.1088/0957-0233/21/11/115701
Version: Accepted for publication
DOI: 10.1088/0957-0233/21/11/115701
URI: https://dspace.lboro.ac.uk/2134/17796
Publisher Link: http://dx.doi.org/10.1088/0957-0233/21/11/115701
ISSN: 0957-0233
Appears in Collections:Published Articles (CREST)
Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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