Risk priority number for PV module defects: Influence of climatic condition

Sai Tatapudi, Prasanna Sundarajan, Cara Libby, Joseph Kuitche, Govindasamy Tamizhmani

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

1 Citation (Scopus)

Abstract

Over the course of their lifetime, photovoltaic (PV) modules develop defects and experience performance degradation due to local environmental stresses. The defect type and rate of degradation depend upon cell technology, module construction type, module manufacturing quality control, installer workmanship, and the installed environment. Defects can be purely cosmetic, can cause performance degradation and/or can cause safety risks. Testing labs and other applied researchers typically report the type and number/distribution of defects observed in each PV plant they have investigated. Simply reporting the observed number of defect types and their percent distribution in a plant is of little use to stakeholders, unless each defect is quantitatively correlated with the corresponding degradation rate per year or safety risk. A quantitative correlation can be achieved using a risk priority number (RPN) approach to assess the risk associated with module defects and determine the appropriate action, such as panel removal for safety reasons or warranty claims for material defects. Understanding the climate dependence of degradation rates and defects is valuable for predicting power output and assessing the financial risk of future projects in specific climatic regions. In this study, the influence of climatic condition on RPN for different types of defects, including encapsulant discoloration and solder bond degradation, has been analyzed. The performance degradation rate data and visual inspection data obtained from seven crystalline-silicon PV plants, aged between 3 and 18 years, were used to calculate the RPN for each defect in three climatic conditions (hot-dry, cold-dry, and temperate). The RPN data were, in turn, used to identify the defects with the greatest effect on performance in each of the three climatic regions.

Original languageEnglish (US)
Title of host publicationNew Concepts in Solar and Thermal Radiation Conversion and Reliability
EditorsJeremy N. Munday, Michael D. Kempe, Peter Bermel
PublisherSPIE
Volume10759
ISBN (Electronic)9781510620896
DOIs
StatePublished - Jan 1 2018
EventNew Concepts in Solar and Thermal Radiation Conversion and Reliability 2018 - San Diego, United States
Duration: Aug 19 2018Aug 21 2018

Other

OtherNew Concepts in Solar and Thermal Radiation Conversion and Reliability 2018
CountryUnited States
CitySan Diego
Period8/19/188/21/18

Fingerprint

Defects
modules
Module
defects
Degradation
degradation
safety
Safety
Influence
discoloration
Warranty
Financial Risk
Discoloration
Cosmetics
causes
Silicon
solders
Quality Control
quality control
Climate

Keywords

  • Defects
  • Photovoltaics
  • Reliability
  • Risk priority number

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Tatapudi, S., Sundarajan, P., Libby, C., Kuitche, J., & Tamizhmani, G. (2018). Risk priority number for PV module defects: Influence of climatic condition. In J. N. Munday, M. D. Kempe, & P. Bermel (Eds.), New Concepts in Solar and Thermal Radiation Conversion and Reliability (Vol. 10759). [1075907] SPIE. https://doi.org/10.1117/12.2321597

Risk priority number for PV module defects : Influence of climatic condition. / Tatapudi, Sai; Sundarajan, Prasanna; Libby, Cara; Kuitche, Joseph; Tamizhmani, Govindasamy.

New Concepts in Solar and Thermal Radiation Conversion and Reliability. ed. / Jeremy N. Munday; Michael D. Kempe; Peter Bermel. Vol. 10759 SPIE, 2018. 1075907.

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

Tatapudi, S, Sundarajan, P, Libby, C, Kuitche, J & Tamizhmani, G 2018, Risk priority number for PV module defects: Influence of climatic condition. in JN Munday, MD Kempe & P Bermel (eds), New Concepts in Solar and Thermal Radiation Conversion and Reliability. vol. 10759, 1075907, SPIE, New Concepts in Solar and Thermal Radiation Conversion and Reliability 2018, San Diego, United States, 8/19/18. https://doi.org/10.1117/12.2321597
Tatapudi S, Sundarajan P, Libby C, Kuitche J, Tamizhmani G. Risk priority number for PV module defects: Influence of climatic condition. In Munday JN, Kempe MD, Bermel P, editors, New Concepts in Solar and Thermal Radiation Conversion and Reliability. Vol. 10759. SPIE. 2018. 1075907 https://doi.org/10.1117/12.2321597
Tatapudi, Sai ; Sundarajan, Prasanna ; Libby, Cara ; Kuitche, Joseph ; Tamizhmani, Govindasamy. / Risk priority number for PV module defects : Influence of climatic condition. New Concepts in Solar and Thermal Radiation Conversion and Reliability. editor / Jeremy N. Munday ; Michael D. Kempe ; Peter Bermel. Vol. 10759 SPIE, 2018.
@inproceedings{cb4a934790f14e119e4292a1d82bfcd9,
title = "Risk priority number for PV module defects: Influence of climatic condition",
abstract = "Over the course of their lifetime, photovoltaic (PV) modules develop defects and experience performance degradation due to local environmental stresses. The defect type and rate of degradation depend upon cell technology, module construction type, module manufacturing quality control, installer workmanship, and the installed environment. Defects can be purely cosmetic, can cause performance degradation and/or can cause safety risks. Testing labs and other applied researchers typically report the type and number/distribution of defects observed in each PV plant they have investigated. Simply reporting the observed number of defect types and their percent distribution in a plant is of little use to stakeholders, unless each defect is quantitatively correlated with the corresponding degradation rate per year or safety risk. A quantitative correlation can be achieved using a risk priority number (RPN) approach to assess the risk associated with module defects and determine the appropriate action, such as panel removal for safety reasons or warranty claims for material defects. Understanding the climate dependence of degradation rates and defects is valuable for predicting power output and assessing the financial risk of future projects in specific climatic regions. In this study, the influence of climatic condition on RPN for different types of defects, including encapsulant discoloration and solder bond degradation, has been analyzed. The performance degradation rate data and visual inspection data obtained from seven crystalline-silicon PV plants, aged between 3 and 18 years, were used to calculate the RPN for each defect in three climatic conditions (hot-dry, cold-dry, and temperate). The RPN data were, in turn, used to identify the defects with the greatest effect on performance in each of the three climatic regions.",
keywords = "Defects, Photovoltaics, Reliability, Risk priority number",
author = "Sai Tatapudi and Prasanna Sundarajan and Cara Libby and Joseph Kuitche and Govindasamy Tamizhmani",
year = "2018",
month = "1",
day = "1",
doi = "10.1117/12.2321597",
language = "English (US)",
volume = "10759",
editor = "Munday, {Jeremy N.} and Kempe, {Michael D.} and Peter Bermel",
booktitle = "New Concepts in Solar and Thermal Radiation Conversion and Reliability",
publisher = "SPIE",

}

TY - GEN

T1 - Risk priority number for PV module defects

T2 - Influence of climatic condition

AU - Tatapudi, Sai

AU - Sundarajan, Prasanna

AU - Libby, Cara

AU - Kuitche, Joseph

AU - Tamizhmani, Govindasamy

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Over the course of their lifetime, photovoltaic (PV) modules develop defects and experience performance degradation due to local environmental stresses. The defect type and rate of degradation depend upon cell technology, module construction type, module manufacturing quality control, installer workmanship, and the installed environment. Defects can be purely cosmetic, can cause performance degradation and/or can cause safety risks. Testing labs and other applied researchers typically report the type and number/distribution of defects observed in each PV plant they have investigated. Simply reporting the observed number of defect types and their percent distribution in a plant is of little use to stakeholders, unless each defect is quantitatively correlated with the corresponding degradation rate per year or safety risk. A quantitative correlation can be achieved using a risk priority number (RPN) approach to assess the risk associated with module defects and determine the appropriate action, such as panel removal for safety reasons or warranty claims for material defects. Understanding the climate dependence of degradation rates and defects is valuable for predicting power output and assessing the financial risk of future projects in specific climatic regions. In this study, the influence of climatic condition on RPN for different types of defects, including encapsulant discoloration and solder bond degradation, has been analyzed. The performance degradation rate data and visual inspection data obtained from seven crystalline-silicon PV plants, aged between 3 and 18 years, were used to calculate the RPN for each defect in three climatic conditions (hot-dry, cold-dry, and temperate). The RPN data were, in turn, used to identify the defects with the greatest effect on performance in each of the three climatic regions.

AB - Over the course of their lifetime, photovoltaic (PV) modules develop defects and experience performance degradation due to local environmental stresses. The defect type and rate of degradation depend upon cell technology, module construction type, module manufacturing quality control, installer workmanship, and the installed environment. Defects can be purely cosmetic, can cause performance degradation and/or can cause safety risks. Testing labs and other applied researchers typically report the type and number/distribution of defects observed in each PV plant they have investigated. Simply reporting the observed number of defect types and their percent distribution in a plant is of little use to stakeholders, unless each defect is quantitatively correlated with the corresponding degradation rate per year or safety risk. A quantitative correlation can be achieved using a risk priority number (RPN) approach to assess the risk associated with module defects and determine the appropriate action, such as panel removal for safety reasons or warranty claims for material defects. Understanding the climate dependence of degradation rates and defects is valuable for predicting power output and assessing the financial risk of future projects in specific climatic regions. In this study, the influence of climatic condition on RPN for different types of defects, including encapsulant discoloration and solder bond degradation, has been analyzed. The performance degradation rate data and visual inspection data obtained from seven crystalline-silicon PV plants, aged between 3 and 18 years, were used to calculate the RPN for each defect in three climatic conditions (hot-dry, cold-dry, and temperate). The RPN data were, in turn, used to identify the defects with the greatest effect on performance in each of the three climatic regions.

KW - Defects

KW - Photovoltaics

KW - Reliability

KW - Risk priority number

UR - http://www.scopus.com/inward/record.url?scp=85056845406&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85056845406&partnerID=8YFLogxK

U2 - 10.1117/12.2321597

DO - 10.1117/12.2321597

M3 - Conference contribution

AN - SCOPUS:85056845406

VL - 10759

BT - New Concepts in Solar and Thermal Radiation Conversion and Reliability

A2 - Munday, Jeremy N.

A2 - Kempe, Michael D.

A2 - Bermel, Peter

PB - SPIE

ER -