---
_id: '18387'
abstract:
- lang: eng
  text: " During comparative measurements of different PV microinverters, two yield
    issues came up that could \r\nnot be explored via conventional efficiency measurements,
    but do have a significant impact on electrical energy \r\nyield: First category
    of issues are either sluggish or nervously acting maximum–power–point–tracking
    devices, which \r\nlead to reduced energy yields. The other category of issues
    is thermal: As a first explanation for observed reduced \r\nenergy yields, it
    has been assumed that the conversion efficiency degrades at higher operating temperatures.
    This \r\nmatter has been investigated in this article: A change in conversion
    efficiency could not be observed for elevated \r\noperation temperatures up to
    50°C, despite high-precision and repeated measurements. But it was found that
    some \r\ninverters temporarily interrupted (or entirely stopped) operation after
    long periods of running at high temperatures. \r\nAlso, a reduction in potential
    maximum power output has been detected for those inverters. Summarizing: With
    a \r\nhigh degree of certainty it can be stated that those reported yield losses
    have been caused by the temporary shutdowns \r\nand power limitations of the inverters."
author:
- first_name: Stefan
  full_name: Krauter, Stefan
  id: '28836'
  last_name: Krauter
  orcid: 0000-0002-3594-260X
- first_name: Jörg
  full_name: Bendfeld, Jörg
  id: '16148'
  last_name: Bendfeld
citation:
  ama: 'Krauter S, Bendfeld J. Elevated Temperatures Affecting Efficiency, Overall
    Performance and Energy Yield of PV Microinverters. In: <i>Proceedings of the EU
    PVSEC 2020 </i>. ; 2020:1179-1180. doi:<a href="https://doi.org/10.4229/EUPVSEC20202020-4AV.3.6">10.4229/EUPVSEC20202020-4AV.3.6</a>'
  apa: Krauter, S., &#38; Bendfeld, J. (2020). Elevated Temperatures Affecting Efficiency,
    Overall Performance and Energy Yield of PV Microinverters. <i>Proceedings of the
    EU PVSEC 2020 </i>, 1179–1180. <a href="https://doi.org/10.4229/EUPVSEC20202020-4AV.3.6">https://doi.org/10.4229/EUPVSEC20202020-4AV.3.6</a>
  bibtex: '@inproceedings{Krauter_Bendfeld_2020, title={Elevated Temperatures Affecting
    Efficiency, Overall Performance and Energy Yield of PV Microinverters}, DOI={<a
    href="https://doi.org/10.4229/EUPVSEC20202020-4AV.3.6">10.4229/EUPVSEC20202020-4AV.3.6</a>},
    booktitle={Proceedings of the EU PVSEC 2020 }, author={Krauter, Stefan and Bendfeld,
    Jörg}, year={2020}, pages={1179–1180} }'
  chicago: Krauter, Stefan, and Jörg Bendfeld. “Elevated Temperatures Affecting Efficiency,
    Overall Performance and Energy Yield of PV Microinverters.” In <i>Proceedings
    of the EU PVSEC 2020 </i>, 1179–80, 2020. <a href="https://doi.org/10.4229/EUPVSEC20202020-4AV.3.6">https://doi.org/10.4229/EUPVSEC20202020-4AV.3.6</a>.
  ieee: 'S. Krauter and J. Bendfeld, “Elevated Temperatures Affecting Efficiency,
    Overall Performance and Energy Yield of PV Microinverters,” in <i>Proceedings
    of the EU PVSEC 2020 </i>, online, 2020, pp. 1179–1180, doi: <a href="https://doi.org/10.4229/EUPVSEC20202020-4AV.3.6">10.4229/EUPVSEC20202020-4AV.3.6</a>.'
  mla: Krauter, Stefan, and Jörg Bendfeld. “Elevated Temperatures Affecting Efficiency,
    Overall Performance and Energy Yield of PV Microinverters.” <i>Proceedings of
    the EU PVSEC 2020 </i>, 2020, pp. 1179–80, doi:<a href="https://doi.org/10.4229/EUPVSEC20202020-4AV.3.6">10.4229/EUPVSEC20202020-4AV.3.6</a>.
  short: 'S. Krauter, J. Bendfeld, in: Proceedings of the EU PVSEC 2020 , 2020, pp.
    1179–1180.'
conference:
  end_date: 2020-09-11
  location: online
  name: EU PVSEC 2020, 37th EU Photovoltaik Solar Energy Conference
  start_date: 2020-09-07
date_created: 2020-08-27T06:26:25Z
date_updated: 2022-01-06T12:32:47Z
ddc:
- '620'
department:
- _id: '53'
doi: 10.4229/EUPVSEC20202020-4AV.3.6
file:
- access_level: closed
  content_type: application/pdf
  creator: krauter
  date_created: 2022-01-06T12:27:02Z
  date_updated: 2022-01-06T12:27:02Z
  file_id: '29171'
  file_name: Krauter Bendfeld - Microinverters at elevated temperatures EUPVSEC 2020.pdf
  file_size: 599660
  relation: main_file
  success: 1
file_date_updated: 2022-01-06T12:27:02Z
has_accepted_license: '1'
jel:
- Q42
keyword:
- AC-modules
- Microinverter
- Power Conditioning
- Thermal Performance
- Ventilation
- Stability
- Efficiency
- Yield
language:
- iso: eng
page: 1179 - 1180
publication: 'Proceedings of the EU PVSEC 2020 '
publication_identifier:
  issn:
  - 3-936338-73-6
publication_status: published
quality_controlled: '1'
status: public
title: Elevated Temperatures Affecting Efficiency, Overall Performance and Energy
  Yield of PV Microinverters
type: conference
user_id: '28836'
year: '2020'
...