Impacts of PV Array Sizing on PV Inverter Lifetime and Reliability

Ariya Sangwongwanich, Yongheng Yang, Dezso Sera, Frede Blaabjerg

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

8 Citations (Scopus)
903 Downloads (Pure)

Abstract

In order to enable a more wide-scale utilization of PV systems, the cost of PV energy has to be comparable with other energy sources. Oversizing the PV array is one common approach to reduce the cost of PV energy, since it increases the PV energy yield during low solar irradiance conditions. However, oversizing the PV array will increase the loading of PV inverters, which may have undesired influence on the PV inverter lifetime and reliability. In that case, it may result in a negative impact on the overall PV energy cost, due to the increased maintenance for the PV inverters. This paper evaluates the lifetime of PV inverters considering the PV array sizing and installation sites, e.g., Denmark and Arizona. The results reveal that the PV array sizing has a considerable impact on the PV inverter lifetime and reliability, especially in Denmark, where the average solar irradiance level is relatively low.
Original languageEnglish
Title of host publicationProceedings of 2017 IEEE Energy Conversion Congress and Exposition (ECCE)
Number of pages8
PublisherIEEE Press
Publication dateOct 2017
Pages3830-3837
DOIs
Publication statusPublished - Oct 2017
Event2017 IEEE Energy Conversion Congress and Exposition (ECCE) - Cincinnati, Ohio, United States
Duration: 1 Oct 20175 Oct 2017

Conference

Conference2017 IEEE Energy Conversion Congress and Exposition (ECCE)
Country/TerritoryUnited States
CityCincinnati, Ohio
Period01/10/201705/10/2017

Keywords

  • PV inverters
  • Lifetime
  • Reliability
  • Mission profile
  • Oversizing
  • Monte Carlo analysis

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