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Solar cell junction temperature measurement of PV module

Resource
Solar Energy,85(2),388-392
Journal
Solar Energy
Pages
388-392
Date Issued
2011-03
Date
2011-03
Author(s)
BIN-JUINE HUANG  
Yang, P.E.
Lin, Y.P.
LIN, L
Chen, H. J.
Lai, R. C.
Cheng, J. S.
DOI
10.1016/j.solener.2010.11.006
URI
http://ntur.lib.ntu.edu.tw//handle/246246/232696
Abstract
The present study develops a simple non-destructive method to measure the solar cell junction temperature of PV module. The PV module was put in the environmental chamber with precise temperature control to keep the solar PV module as well as the cell junction in thermal equilibrium with the chamber. The open-circuit voltage of PV module Voc is then measured using a short pulse of solar irradiation provided by a solar simulator. Repeating the measurements at different environment temperature (40-80°C) and solar irradiation S (200-1000W/m2), the correlation between the open-circuit voltage Voc, the junction temperature Tj, and solar irradiation S is derived.The fundamental correlation of the PV module is utilized for on-site monitoring of solar cell junction temperature using the measured Voc and S at a short time instant with open circuit. The junction temperature Tj is then determined using the measured S and Voc through the fundamental correlation. The outdoor test results show that the junction temperature measured using the present method, Tjo, is more accurate. The maximum error using the average surface temperature Tave as the junction temperature is 4.8 °C underestimation; while the maximum error using the present method is 1.3 °C underestimation. © 2010 Elsevier Ltd.
SDGs

[SDGs]SDG7

Other Subjects
Environment temperature; Junction temperatures; Maximum error; Nondestructive methods; On-site monitoring; Open circuits; PV modules; Short pulse; Solar cell junctions; Solar cell measurement; Solar irradiation; Solar PVs; Solar simulator; Surface temperatures; Test results; Thermal equilibriums; Cell membranes; Environmental chambers; Irradiation; Open circuit voltage; Photovoltaic effects; Solar radiation; Temperature measurement; Solar cells; accuracy assessment; measurement method; monitoring; photovoltaic system; solar power; solar radiation; surface temperature; temperature profile
Type
journal article
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