Metal Oxide Varistor (MOV) Lifetime Estimation with Impulse-Based Testing in PV Inverter Systems

Yuxi Men, Xiaonan Lu, Zheyu Zhang, Ramanathan Thiagarajan

Research output: Contribution to conferencePaperpeer-review

Abstract

Surges caused by lightning strikes could damage electrical components in photovoltaic (PV) systems. Metal oxide varistors (MOVs) are commonly used to protect PV systems from lightning strikes. This paper proposes a holistic impulse-based MOV lifetime estimation framework. The impacts of peak current and fault duration induced by lightning events are considered in the MOV lifetime estimation framework. Moreover, the impact of different parameter combinations on MOV lifetime estimation is analyzed. The effectiveness of the proposed work is validated in a PV inverter test system developed in MATLAB/Simulink.

Original languageAmerican English
Number of pages4
DOIs
StatePublished - 2022
Event13th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2022 - Kiel, Germany
Duration: 26 Jun 202229 Jun 2022

Conference

Conference13th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2022
Country/TerritoryGermany
CityKiel
Period26/06/2229/06/22

Bibliographical note

See NREL/CP-5D00-82874 for preprint

NREL Publication Number

  • NREL/CP-5D00-84998

Keywords

  • lifetime estimation
  • metal oxide varistors (MOVs)
  • photovoltaic (PV) systems

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