SciTech Connect

Title: Temperature coefficients for PV modules and arrays: Measurement methods, difficulties, and results

Temperature coefficients for PV modules and arrays: Measurement methods, difficulties, and results The term temperature coefficient has been applied to several different photovoltaic performance parameters, including voltage, current, and power. The procedures for measuring the coefficient(s) for modules and arrays are not yet standardized, and systematic influences are common in the test methods used to measure them. There are also misconceptions regarding their application. Yet, temperature coefficients, however obtained, play an important role in PV system design and sizing, where often the worst case operating condition dictates the array size. This paper describes effective methods for determining temperature coefficients for cells, modules, and arrays; identifies sources of systematic errors in measurements; gives typical measured values for modules; and provides guidance for their application in system engineering.
Authors: ; ;
Publication Date:
OSTI Identifier:548687
Report Number(s):SAND--97-1169C; CONF-970953--
ON: DE98001183; BR: EB2203000; TRN: AHC29724%%89
DOE Contract Number:AC04-94AL85000
Resource Type:Conference
Data Type:
Resource Relation:Conference: 26. IEEE photovoltaic specialists conference, Anaheim, CA (United States), 29 Sep - 3 Oct 1997; Other Information: PBD: [1997]
Research Org:Sandia National Labs., Albuquerque, NM (United States)
Sponsoring Org:USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)
Country of Publication:United States
Language:English
Subject: 14 SOLAR ENERGY; SOLAR CELL ARRAYS; SOLAR CELLS; MEASURING METHODS; TEMPERATURE DEPENDENCE; PERFORMANCE; CAPACITY