Understanding wind turbine power converter reliability under realistic wind conditions

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-02-16 DOI:10.1049/pel2.12670

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

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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.

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了解现实风况下风力涡轮机变流器的可靠性

风力涡轮机变流器的可靠性对于分析风能项目成本、估算维护和停机时间至关重要。该领域已发表的文献主要通过评估风速对可靠性的影响来估算变流器的使用寿命。然而，本文证明，在类似可靠性分析中尚未广泛考虑的风湍流强度对变流器寿命有显著影响。本文使用了 821 个 10 分钟的风速时间序列，以 1 Hz 的频率对两种最常用的风力涡轮机变流器拓扑结构进行采样：两电平电压源和三电平中性点箝位。机电和热建模以及统计分析表明，平均风速和湍流强度都会影响两种变流器拓扑结构的使用寿命。不过，本文估计，根据运行风速和湍流强度，三电平转换器的运行时间是两电平转换器的 2.4 到 4.0 倍。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.