Abstract

Energy from waves may play a key role in sustainable electricity production in the future. Optimal reliability levels for components used for Wave Energy Devices (WEDs) need to be defined to be able to decrease their cost of electricity. Optimal reliability levels can be found using probabilistic methods. Extreme loads during normal operation, but also extreme loads simultaneous with failure of mechanical and electrical components as well as the control system, are of importance for WEDs. Furthermore, fatigue loading needs to be assessed. This paper focus on the Wavestar prototype which is located near Hanstholm (DK). In the present paper, a generic example for an extreme limit state is considered. The extreme limit state case considers important failure modes of the system which are determined by a Fault Tree Analysis (FTA) and Failure Mode and Effects Analysis (FMEA). The resulting reliability indices are then compared with related industries like offshore wind turbines.
Original languageEnglish
Title of host publicationSafety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures : Proceedings of the 11th International Conference on Structural Safety and Reliability
EditorsGeorg Deodatis, Bruce R. Ellingwood, Dan M. Frangopol
Number of pages8
PublisherCRC Press
Publication date2014
Pages5195-5202
ISBN (Print)978-1-13800-086-5 (Book+CD)
ISBN (Electronic)978-1-31588-488-2 (e-Book)
Publication statusPublished - 2014
EventSafety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures: International Conference on Structural Safety and Reliability - New York, United States
Duration: 16 Jun 201320 Jun 2013
Conference number: 11

Conference

ConferenceSafety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures
Number11
CountryUnited States
CityNew York
Period16/06/201320/06/2013

Bibliographical note

Proceedings of the 11th International Conference on Structural Safety and Reliability

Keywords

  • Reliability Assessment
  • Wave Energy Devices

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  • Cite this

    Ambühl, S., Kramer, M., Kofoed, J. P., Sørensen, J. D., & Ferreira, C. B. (2014). Reliability assessment of wave Energy devices. In G. Deodatis, B. R. Ellingwood, & D. M. Frangopol (Eds.), Safety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures: Proceedings of the 11th International Conference on Structural Safety and Reliability (pp. 5195-5202). CRC Press. http://www.crcpress.com/product/isbn/9781138000865