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Understanding wind turbine power converter reliability under realistic wind conditions

Alsaadi, Sermed; Crabtree, Christopher J.; Matthews, Peter C.; Shahbazi, Mahmoud

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Authors

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Sermed Alsaadi sermed.a.alsaadi@durham.ac.uk
PGR Student Doctor of Philosophy

Peter C. Matthews



Abstract

The reliability of wind turbine power converters is crucial for analyzing wind energy project costs, and for estimating maintenance and downtime. The published literature in this field relies on evaluating the reliability effect of wind speed to estimate the converter lifetime. However, this paper demonstrates that wind turbulence intensity, which has not been widely considered in similar reliability analyses, shows a significant impact on converter lifetime. This paper uses 821 10‐min wind speed time series sampled at 1 Hz on the two most commonly deployed wind turbine converter topologies: the two‐level voltage source and the three‐level neutral point clamped. Electromechanical and thermal modelling, combined with statistical analysis shows that mean wind speed and turbulence intensity both impact the lifetime of both converter topologies. However, the paper estimates that the three‐level converter can operate 2.4 to 4.0 times longer than the two‐level converter depending on the operating wind speed and turbulence intensity.

Citation

Alsaadi, S., Crabtree, C. J., Matthews, P. C., & Shahbazi, M. (2024). Understanding wind turbine power converter reliability under realistic wind conditions. IET Power Electronics, 17(4), 524-533. https://doi.org/10.1049/pel2.12670

Journal Article Type Article
Acceptance Date Feb 4, 2024
Online Publication Date Feb 16, 2024
Publication Date Mar 18, 2024
Deposit Date Feb 19, 2024
Publicly Available Date Feb 19, 2024
Journal IET Power Electronics
Print ISSN 1755-4535
Publisher Institution of Engineering and Technology (IET)
Peer Reviewed Peer Reviewed
Volume 17
Issue 4
Pages 524-533
DOI https://doi.org/10.1049/pel2.12670
Keywords power convertors, reliability, wind turbines
Public URL https://durham-repository.worktribe.com/output/2258029

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