Accuracy Challenges in Non-contact Module I-V Measurements

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


Many techniques can help locate failing and failed PV modules in a field. However, quantifying module performance relative to warranty thresholds requires measuring the electrical quantities of the modules in question. Simultaneous I-V measurement of all modules in a string is possible, removing irradiance and spectral irradiance as variables in interpreting such measurements that would otherwise be performed sequentially. Performing such measurements without making electrical connection to the individual modules would provide additional benefits of reduced time, risk, and worker hardship. We found that such measurements are possible, but are challenged by inaccuracies involving probing technique and site conditions. Future work to understand the sources of these inaccuracies may enable their mitigation, enabling such measurements to be practical, frequent, and predictive of upcoming module failures.

Original languageEnglish (US)
Title of host publication2021 IEEE 48th Photovoltaic Specialists Conference, PVSC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages4
ISBN (Electronic)9781665419222
StatePublished - Jun 20 2021
Event48th IEEE Photovoltaic Specialists Conference, PVSC 2021 - Fort Lauderdale, United States
Duration: Jun 20 2021Jun 25 2021

Publication series

NameConference Record of the IEEE Photovoltaic Specialists Conference
ISSN (Print)0160-8371


Conference48th IEEE Photovoltaic Specialists Conference, PVSC 2021
Country/TerritoryUnited States
CityFort Lauderdale

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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