Abstract
Wind power converter systems are essential subsystems in both off-shore and on-shore wind turbines. It is the main interface between generator and grid connection. This system is affected by numerous stresses where the main contributors might be defined as vibration and temperature loadings. The temperature variations induce time-varying stresses and thereby fatigue loads. A probabilistic model is used to model fatigue failure for an electrical component in the power converter system. This model is based on a linear damage accumulation and physics of failure approaches, where a failure criterion is defined by the threshold model. The attention is focused on crack propagation in solder joints of electrical components due to the temperature loadings. Structural Reliability approaches are used to incorporate model, physical and statistical uncertainties. Reliability estimation by means of structural reliability methods and simulation are implemented for the power converter system and results are compared. Based on an illustrative example, it is shown that structural reliability methods are appropriate techniques to use for further convertor system reliability estimation studies.
Originalsprog | Engelsk |
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Titel | Reliability and Optimization of Structural Systems : Proceedings of the 16th working conference on the international federation of information processing (IFIP) working group 7.5 on reliability and optimization of structural systems |
Redaktører | A. Der Kiureghian, A. Hajian |
Antal sider | 8 |
Forlag | American University of Armenia Press, Yrevan, Armenia |
Publikationsdato | 2012 |
Sider | 135-142 |
ISBN (Trykt) | 978-0-9657429-0-0 |
Status | Udgivet - 2012 |
Begivenhed | Reliability and Optimization of Structural System: IFIP WG 7.5 working group conference - Yerevan, Armenien Varighed: 24 jun. 2012 → 27 jun. 2012 Konferencens nummer: 16 |
Konference
Konference | Reliability and Optimization of Structural System |
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Nummer | 16 |
Land/Område | Armenien |
By | Yerevan |
Periode | 24/06/2012 → 27/06/2012 |
Emneord
- Structural Reliability
- Wind Power
- Converter
- Reliability Assessment