Converter Monitoring Unit for Retrofit of Wind Power Converters

Rannestad, Bjørn; Maarbjerg, A. E.; Frederiksen, K. L.; Munk‐Nielsen, Stig; Gadgaard, Kristian

doi:10.1109/tpel.2017.2716946

Cited by 18 publications

(15 citation statements)

References 19 publications

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“…It is to be regarded as certain that components with insufficient strength, e.g., due to manufacturing defects, are among the main causes of the frequent driver-board failures. This is supported by the post-mortem analysis results presented in Sections 3.2.1 and 3.3 of this paper, but also e.g., by the damage analysis of more than 100 failed stacks from wind-turbine converters presented in [23].…”

Section: Weak Componentssupporting

confidence: 73%

Exploring the Causes of Power-Converter Failure in Wind Turbines based on Comprehensive Field-Data and Damage Analysis

et al. 2019

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Power converters are among the most frequently failing components of wind turbines. Despite their massive economic impact, the actual causes and mechanisms underlying these failures have remained in the dark for many years. In view of this situation, a large consortium of three research institutes and 16 companies, including wind-turbine and component manufacturers, operators and maintenance-service providers has joined forces to identify the main causes and driving factors of the power-converter failures in wind turbines to create a basis for effective remedial measures. The present paper summarizes and discusses the results of this research initiative, which have been achieved through the evaluation of converter-specific failure and operating data of a large and diverse worldwide wind-turbine fleet, field measurements as well as post-mortem investigation of returned converter components. A key conclusion of the work is that the thermal-cycling induced fatigue of bond-chip contacts and die-attach solder, which is a known issue in other fields of power-electronics applications and which has been widely assumed to be the principle damage mechanisms also in wind turbines, is no relevant contributor to the observed converter failures in this application. Instead, the results indicate that environmental factors such as humidity and contamination but also design and quality issues as well as human errors play an important part in the incidence of these failures.

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Section: Weak Componentssupporting

confidence: 73%

Exploring the Causes of Power-Converter Failure in Wind Turbines based on Comprehensive Field-Data and Damage Analysis

et al. 2019

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“…Complexity, cost, design constraint, accessibility, and effectiveness under field operation environment are of great concern. In [106,107], challenges in circuit parasitics and data analytics of a condition monitoring unit for IGBT power modules are addressed. A converter-level power device on-state voltage measurement method is developed in [108], which reduces the design cost and provides a converter-level plug-and-play solution without the need to connect to the monitored power devices.…”

Section: A Physics-of-degradation and Condition Monitoringmentioning

confidence: 99%

Power Electronics Reliability: State of the Art and Outlook

Wang

Blaabjerg

2021

IEEE J. Emerg. Sel. Topics Power Electron.

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“…Therefore, their accurate measurement is essential to the realization of predictive maintenance and reliability improvement [1]. Tremendous efforts have been devoted to realizing the online measurement of on-state voltage, consisting of component-level solutions [3][4][5] and converter-level solutions [6,7].…”

Section: Introductionmentioning

confidence: 99%