Modeling Thermal Fatigue in CPV Cell Assemblies: Preprint

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A finite element model has been created to quantify the thermal fatigue damage of the CPV die attach. Simulations are used to compare to results of empirical thermal fatigue equations originally developed for accelerated chamber cycling. While the empirical equations show promise when extrapolated to the lower temperature cycles characteristic of weather-induced temperature changes in the CPV die attach, it is demonstrated that their damage does not accumulate linearly: the damage a particular cycle contributes depends on the preceding cycles. Simulations of modeled CPV cell temperature histories provided for direct comparison of the FEM and empirical methods, and for calculation ... continued below

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8 p.

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Bosco, N.; Silverman, T. J. & Kurtz, S. July 1, 2011.

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A finite element model has been created to quantify the thermal fatigue damage of the CPV die attach. Simulations are used to compare to results of empirical thermal fatigue equations originally developed for accelerated chamber cycling. While the empirical equations show promise when extrapolated to the lower temperature cycles characteristic of weather-induced temperature changes in the CPV die attach, it is demonstrated that their damage does not accumulate linearly: the damage a particular cycle contributes depends on the preceding cycles. Simulations of modeled CPV cell temperature histories provided for direct comparison of the FEM and empirical methods, and for calculation of equivalent times provided by standard accelerated test sequences.

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8 p.

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  • Presented at the 37th IEEE Photovoltaic Specialists Conference (PVSC 37), 19-24 June 2011, Seattle, Washington

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  • Report No.: NREL/CP-5200-50685
  • Grant Number: AC36-08GO28308
  • Office of Scientific & Technical Information Report Number: 1022404
  • Archival Resource Key: ark:/67531/metadc846549

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  • July 1, 2011

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  • May 19, 2016, 3:16 p.m.

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  • April 6, 2017, 2:08 p.m.

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Bosco, N.; Silverman, T. J. & Kurtz, S. Modeling Thermal Fatigue in CPV Cell Assemblies: Preprint, article, July 1, 2011; Golden, Colorado. (digital.library.unt.edu/ark:/67531/metadc846549/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.