Induced thermo-mechanical stress in CPV receivers with cycled high intensity light

Pérez Fernández, Valentín and Anton Hernandez, Ignacio and Herrero Martin, Rebeca and Nogueira Díaz, Eduardo and Nuñez Júdez, Rubén and Cañizo Nadal, Carlos del and Sala Pano, Gabriel (2014). Induced thermo-mechanical stress in CPV receivers with cycled high intensity light. In: "10th Internacional Conference on Concentrator Photovoltaic: CPV-10", 07/04/2014 - 09/04/2014, Albuquerque, New Mexico, EE.UU. pp. 254-258. https://doi.org/10.1063/1.4897073.

Description

Title: Induced thermo-mechanical stress in CPV receivers with cycled high intensity light
Author/s:
  • Pérez Fernández, Valentín
  • Anton Hernandez, Ignacio
  • Herrero Martin, Rebeca
  • Nogueira Díaz, Eduardo
  • Nuñez Júdez, Rubén
  • Cañizo Nadal, Carlos del
  • Sala Pano, Gabriel
Item Type: Presentation at Congress or Conference (Article)
Event Title: 10th Internacional Conference on Concentrator Photovoltaic: CPV-10
Event Dates: 07/04/2014 - 09/04/2014
Event Location: Albuquerque, New Mexico, EE.UU
Title of Book: AIP Conference Proceedings
Título de Revista/Publicación: AIP Conference Proceedings
Date: 2014
ISSN: 0094-243X
Volume: 1616
Subjects:
Freetext Keywords: Concentrators, CPV receivers, thermal stress, mechanical stress, cycling, reliability
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Electrónica Física
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

CPV receivers are made of materials with very different lineal expansion coefficients. Strong variations in DNI due to the passage of clouds can cause sudden temperature changes that creates mechanical stress. For common solder and metal filled polymers the plastic limit could be reached causing substantial fatigue. The best forecast of receiver reliability is therefore achieved by applying an intermittent light source with nominal irradiance level and a number of cycles equal to the expected cloud passages for a given site. The UPM has developed specialized equipment, dubbed the LYSS (Light cYcling Stressing Source), for carrying out such experiments. The small thermal capacity of receivers allows simulating more than 25000 cycles per week. The number of deep transients expected for Madrid in 30 years operation, based on available data, is about 45000. We are currently using the system to cycle a ?Ge/Ag Epoxy/aluminum? receiver, which shows no degradation after 20000 cycles. The equipment can cast up to 200 and 70 W/cm2 on 0.1 and 1 cm2 cells, respectively.

Funding Projects

TypeCodeAcronymLeaderTitle
FP7EC/FP7/295958UnspecifiedUnspecifiedUnspecified

More information

Item ID: 37385
DC Identifier: http://oa.upm.es/37385/
OAI Identifier: oai:oa.upm.es:37385
DOI: 10.1063/1.4897073
Deposited by: Memoria Investigacion
Deposited on: 05 Sep 2015 10:48
Last Modified: 07 Apr 2019 09:07
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