Dust effects on PV array performance: in-field observations with non-uniform patterns

Lorenzo Pigueiras, Eduardo and Moreton Villagra, Rodrigo and Luque, Ignacio (2014). Dust effects on PV array performance: in-field observations with non-uniform patterns. "Progress in Photovoltaics", v. 22 (n. 6); pp. 666-670. ISSN 1062-7995. https://doi.org/10.1002/pip.2348.

Description

Title: Dust effects on PV array performance: in-field observations with non-uniform patterns
Author/s:
  • Lorenzo Pigueiras, Eduardo
  • Moreton Villagra, Rodrigo
  • Luque, Ignacio
Item Type: Article
Título de Revista/Publicación: Progress in Photovoltaics
Date: 2014
ISSN: 1062-7995
Volume: 22
Subjects:
Freetext Keywords: PV performance; dust; power losses; voltage losses; hot spots; in-field measurements
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Electrónica Física
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

This paper presents the impact of non-homogeneous deposits of dust on the performance of a PV array. The observations have been made in a 2-MW PV park in the southeast region of Spain. The results are that inhomogeneous dust leads to more significant consequences than the mere short-circuit current reduction resulting from transmittance losses. In particular, when the affected PV modules are part of a string together with other cleaned (or less dusty) ones, operation voltage losses arise. These voltage losses can be several times larger than the short-circuit ones, leading to power losses that can be much larger than what measurements suggest when the PV modules are considered separately. Significant hot-spot phenomena can also arise leading to cells exhibiting temperature differences of more than 20 degrees and thus representing a threat to the PV modules' lifetime.

More information

Item ID: 38897
DC Identifier: http://oa.upm.es/38897/
OAI Identifier: oai:oa.upm.es:38897
DOI: 10.1002/pip.2348
Official URL: http://onlinelibrary.wiley.com/doi/10.1002/pip.2348/abstract
Deposited by: Memoria Investigacion
Deposited on: 23 Dec 2015 18:42
Last Modified: 23 Dec 2015 18:42
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