Abstract
System modeling of electrical components for Wind
Turbine (WT) applications is an important part for the overall
WT reliability assessment. The presented approach is an
approximate method for Insulated Gate Bipolar Transistor
(IGBT) reliability estimation, modeled based on the parallel
system configuration. The estimated system reliability by the
proposed method is a conservative estimate. Application of the
suggested method could be extended for reliability estimation
of systems composing of welding joints, bolts, bearings, etc.
The reliability model incorporates the correlation between
the components in the reliability estimation though limit state
functions and mechanical (failure-effect) correlations. The
model is based on a physics of failure approach and a linear
accumulated damage rule. To account model parameter
variabilities, the First Order Reliability Method (FORM)
technique was applied for the systems failure functions
estimation.
It is desired to compare the results with the true system
failure function, which is possible to estimate using
simulation techniques. Theoretical model development should
be applied for the further research. One of the directions for it
might be modeling the system based on the Sequential Order
Statistics, by considering the failure of the minimum (weakest
component) at each loading level. The proposed idea to
represent the system by the independent components could
also be used for modeling reliability by Sequential Order
Statistics.
Turbine (WT) applications is an important part for the overall
WT reliability assessment. The presented approach is an
approximate method for Insulated Gate Bipolar Transistor
(IGBT) reliability estimation, modeled based on the parallel
system configuration. The estimated system reliability by the
proposed method is a conservative estimate. Application of the
suggested method could be extended for reliability estimation
of systems composing of welding joints, bolts, bearings, etc.
The reliability model incorporates the correlation between
the components in the reliability estimation though limit state
functions and mechanical (failure-effect) correlations. The
model is based on a physics of failure approach and a linear
accumulated damage rule. To account model parameter
variabilities, the First Order Reliability Method (FORM)
technique was applied for the systems failure functions
estimation.
It is desired to compare the results with the true system
failure function, which is possible to estimate using
simulation techniques. Theoretical model development should
be applied for the further research. One of the directions for it
might be modeling the system based on the Sequential Order
Statistics, by considering the failure of the minimum (weakest
component) at each loading level. The proposed idea to
represent the system by the independent components could
also be used for modeling reliability by Sequential Order
Statistics.
| Originalsprog | Engelsk |
|---|---|
| Tidsskrift | Proceedings of the Reliability and Maintainability Symposium |
| Udgave nummer | 59 |
| Antal sider | 6 |
| ISSN | 0149-144X |
| DOI | |
| Status | Udgivet - 2013 |
| Begivenhed | The Annual Reliability and Maintainability Symposium - Rosen Shingle Creek Resort, Orlando, Florida, USA Varighed: 28 jan. 2013 → 31 jan. 2013 Konferencens nummer: 59 http://www.ieee.org/conferences_events/conferences/conferencedetails/index.html?Conf_ID=11150 |
Konference
| Konference | The Annual Reliability and Maintainability Symposium |
|---|---|
| Nummer | 59 |
| Lokation | Rosen Shingle Creek Resort |
| Land/Område | USA |
| By | Orlando, Florida |
| Periode | 28/01/2013 → 31/01/2013 |
| Internetadresse |
Bibliografisk note
ISBN: 978-1-4577-1851-9Emneord
- Wind Turbine
- WT
- IGBT
- Components Reliability
- First Order Reliability Method
- FORM
- Failure