Reliability Analysis and Repair Activity for the Components of 350 kW Inverters in a Large Scale Grid-Connected Photovoltaic System

The reliability of photovoltaic (PV) generators is strongly affected by the performance of Direct Current/Alternating Current (DC/AC) converters, being the major source of PV underperformance. However, generally, their reliability is not investigated at component level: thus, the present work presen...

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Published in:Electronics (Basel) 2021-03, Vol.10 (5), p.564
Main Authors: Spertino, Filippo, Amato, Angela, Casali, Gabriele, Ciocia, Alessandro, Malgaroli, Gabriele
Format: Article
Language:English
Subjects:
Alternating current
Component reliability
Direct current
Downtime
Electric converters
Energy
Failure
Failure analysis
Failure rates
Inverters
Photovoltaic cells
Plant maintenance
Preventive maintenance
Reliability analysis
Repair
Useful life
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creator Spertino, Filippo
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Ciocia, Alessandro
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description The reliability of photovoltaic (PV) generators is strongly affected by the performance of Direct Current/Alternating Current (DC/AC) converters, being the major source of PV underperformance. However, generally, their reliability is not investigated at component level: thus, the present work presents a reliability analysis and the repair activity for the components of full bridge DC/AC converters. In the first part of the paper, a reliability analysis using failure rates from literature is carried out for 132 inverters (AC rated power of 350 kW each) with global AC power of 46 MW in a large scale grid-connected PV plant. Then, in the second part of the work, results from literature are compared with data obtained by analyzing industrial maintenance reports in the years 2015–2017. In conclusion, the yearly energy losses involved in the downtime are quantified, as well as their availability.
doi_str_mv 10.3390/electronics10050564
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subjects Alternating current
Component reliability
Direct current
Downtime
Electric converters
Energy
Failure
Failure analysis
Failure rates
Inverters
Photovoltaic cells
Plant maintenance
Preventive maintenance
Reliability analysis
Repair
Useful life
title Reliability Analysis and Repair Activity for the Components of 350 kW Inverters in a Large Scale Grid-Connected Photovoltaic System
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