Spread Spectrum Time Domain Reflectometry for Detecting Accelerated Degradation in Photovoltaic Cells: Preprint

Christopher Deline, Kent Terwilliger, Byron McDanold, Mashad Saleh, Evan Benoit, Samuel Kingston, Naveen Tumkur Jayakumar, Joel Harley, Cynthia Furse, Michael Scarpulla

Research output: Contribution to conferencePaper

Abstract

Spread spectrum time domain reflectometry (SSTDR) is a broadband electrical reflectometry technique that has been used to detect and localize faults on live electrical systems. In this paper, we use SSTDR to electrically interrogate the responses of PV cells and mini modules to three accelerated degradation tests: damp heat, potential induced degradation, and humidity freeze. The SSTDR responses change in distinct ways for each test demonstrating that SSTDR can be used to identify the type of accelerated degradation in cells.
Original languageAmerican English
Number of pages6
StatePublished - 2019
Event46th IEEE Photovoltaic Specialists Conference (PVSC 46) - Chicago, Illinois
Duration: 16 Jun 201921 Jun 2019

Conference

Conference46th IEEE Photovoltaic Specialists Conference (PVSC 46)
CityChicago, Illinois
Period16/06/1921/06/19

NREL Publication Number

  • NREL/CP-5K00-75089

Keywords

  • degradation tests
  • photovotaic cells
  • reflectometry
  • SSTDR

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