Thermal effects of microinverter placement on the performance of silicon photovoltaics

Nicholas U. Day, Chase C. Reinhart, Shaun DeBow, Matthew K. Smith, David Sailor, Erik Johansson, Carl C. Wamser

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Typical installation of a microinverter in a plane parallel position on the back side of a monocrystalline silicon photovoltaic (PV) panel can lead to differential heating of the PV cells immediately above the microinverter by as much as 4. °C. Rotation of the microinverter to a perpendicular position allows the microinverter itself to run cooler by about 4. °C and completely removes the distinctive heat signature on the panels. Because the thermal effects of the microinverters are significant for only two of the 72 cells on the panel, changes in DC power output from the panels are not detectable. However, lower microinverter temperatures increase microinverter efficiency by about 0.65%, such that overall AC power production is increased by about 0.09%. In addition to these small improvements to be gained by the repositioning of microinverters, there are also potential long-term concerns that nonuniform heating may lead to accelerated degradation in the affected area of the panel.

Original languageEnglish (US)
Pages (from-to)444-452
Number of pages9
JournalSolar Energy
Volume125
DOIs
StatePublished - Feb 1 2016
Externally publishedYes

Fingerprint

Silicon
Thermal effects
Monocrystalline silicon
Heating
Photovoltaic cells
Degradation
Temperature
Hot Temperature

Keywords

  • Microinverter efficiency
  • PV panel efficiency
  • Temperature effects

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

Day, N. U., Reinhart, C. C., DeBow, S., Smith, M. K., Sailor, D., Johansson, E., & Wamser, C. C. (2016). Thermal effects of microinverter placement on the performance of silicon photovoltaics. Solar Energy, 125, 444-452. https://doi.org/10.1016/j.solener.2015.12.023

Thermal effects of microinverter placement on the performance of silicon photovoltaics. / Day, Nicholas U.; Reinhart, Chase C.; DeBow, Shaun; Smith, Matthew K.; Sailor, David; Johansson, Erik; Wamser, Carl C.

In: Solar Energy, Vol. 125, 01.02.2016, p. 444-452.

Research output: Contribution to journalArticle

Day, NU, Reinhart, CC, DeBow, S, Smith, MK, Sailor, D, Johansson, E & Wamser, CC 2016, 'Thermal effects of microinverter placement on the performance of silicon photovoltaics', Solar Energy, vol. 125, pp. 444-452. https://doi.org/10.1016/j.solener.2015.12.023
Day, Nicholas U. ; Reinhart, Chase C. ; DeBow, Shaun ; Smith, Matthew K. ; Sailor, David ; Johansson, Erik ; Wamser, Carl C. / Thermal effects of microinverter placement on the performance of silicon photovoltaics. In: Solar Energy. 2016 ; Vol. 125. pp. 444-452.
@article{e6328c23321840a1981a232a833105db,
title = "Thermal effects of microinverter placement on the performance of silicon photovoltaics",
abstract = "Typical installation of a microinverter in a plane parallel position on the back side of a monocrystalline silicon photovoltaic (PV) panel can lead to differential heating of the PV cells immediately above the microinverter by as much as 4. °C. Rotation of the microinverter to a perpendicular position allows the microinverter itself to run cooler by about 4. °C and completely removes the distinctive heat signature on the panels. Because the thermal effects of the microinverters are significant for only two of the 72 cells on the panel, changes in DC power output from the panels are not detectable. However, lower microinverter temperatures increase microinverter efficiency by about 0.65{\%}, such that overall AC power production is increased by about 0.09{\%}. In addition to these small improvements to be gained by the repositioning of microinverters, there are also potential long-term concerns that nonuniform heating may lead to accelerated degradation in the affected area of the panel.",
keywords = "Microinverter efficiency, PV panel efficiency, Temperature effects",
author = "Day, {Nicholas U.} and Reinhart, {Chase C.} and Shaun DeBow and Smith, {Matthew K.} and David Sailor and Erik Johansson and Wamser, {Carl C.}",
year = "2016",
month = "2",
day = "1",
doi = "10.1016/j.solener.2015.12.023",
language = "English (US)",
volume = "125",
pages = "444--452",
journal = "Solar Energy",
issn = "0038-092X",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Thermal effects of microinverter placement on the performance of silicon photovoltaics

AU - Day, Nicholas U.

AU - Reinhart, Chase C.

AU - DeBow, Shaun

AU - Smith, Matthew K.

AU - Sailor, David

AU - Johansson, Erik

AU - Wamser, Carl C.

PY - 2016/2/1

Y1 - 2016/2/1

N2 - Typical installation of a microinverter in a plane parallel position on the back side of a monocrystalline silicon photovoltaic (PV) panel can lead to differential heating of the PV cells immediately above the microinverter by as much as 4. °C. Rotation of the microinverter to a perpendicular position allows the microinverter itself to run cooler by about 4. °C and completely removes the distinctive heat signature on the panels. Because the thermal effects of the microinverters are significant for only two of the 72 cells on the panel, changes in DC power output from the panels are not detectable. However, lower microinverter temperatures increase microinverter efficiency by about 0.65%, such that overall AC power production is increased by about 0.09%. In addition to these small improvements to be gained by the repositioning of microinverters, there are also potential long-term concerns that nonuniform heating may lead to accelerated degradation in the affected area of the panel.

AB - Typical installation of a microinverter in a plane parallel position on the back side of a monocrystalline silicon photovoltaic (PV) panel can lead to differential heating of the PV cells immediately above the microinverter by as much as 4. °C. Rotation of the microinverter to a perpendicular position allows the microinverter itself to run cooler by about 4. °C and completely removes the distinctive heat signature on the panels. Because the thermal effects of the microinverters are significant for only two of the 72 cells on the panel, changes in DC power output from the panels are not detectable. However, lower microinverter temperatures increase microinverter efficiency by about 0.65%, such that overall AC power production is increased by about 0.09%. In addition to these small improvements to be gained by the repositioning of microinverters, there are also potential long-term concerns that nonuniform heating may lead to accelerated degradation in the affected area of the panel.

KW - Microinverter efficiency

KW - PV panel efficiency

KW - Temperature effects

UR - http://www.scopus.com/inward/record.url?scp=84954357426&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84954357426&partnerID=8YFLogxK

U2 - 10.1016/j.solener.2015.12.023

DO - 10.1016/j.solener.2015.12.023

M3 - Article

AN - SCOPUS:84954357426

VL - 125

SP - 444

EP - 452

JO - Solar Energy

JF - Solar Energy

SN - 0038-092X

ER -