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Towards reliable and survivable ocean wave energy converters

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dc.contributor.advisor Paasch, Robert
dc.creator Brown, Adam C.
dc.date.accessioned 2009-06-25T20:18:46Z
dc.date.available 2009-06-25T20:18:46Z
dc.date.copyright 2009-06-09
dc.date.issued 2009-06-09
dc.identifier.uri http://hdl.handle.net/1957/11934
dc.description Graduation date: 2010 en
dc.description.abstract Ocean wave energy is a new and developing field of renewable energy with great potential. The energy contained in one meter of an average wave off the coast of Newport Oregon could supply dozens of homes with electricity. However, ocean waves are usually quite irregular which leads to large bursts and lulls in the power available for extraction. These bursts and lulls generate large cyclic system stresses that will invariably work over time to damage an ocean wave energy converter. Due to the generally remote and extreme conditions of deployment, the reliability and survivability of an Ocean Wave Energy Converter (OWEC) are expected to greatly impact the cost of generated power passed to the consumer. For this reason, it is imperative that OWECs are both highly reliable during operation, and highly survivable through extreme conditions. This thesis is a compilation of three papers relating to the reliability and survivability of OWECs. The first paper broadly addresses the probabilistic design of ocean wave energy converters for real ocean waves. The analysis conducted in this paper used 13 years of data from the Stonewall Banks data buoy off the coast of Newport Oregon (NDBC buoy 46050) to extrapolate probabilistic information that could be used throughout the design process to improve system reliability. The second paper provides a definition and metric for the widely used term survivability. Survivability is often confused with the similar concept of reliability. The paper seeks to highlight differences between the two terms with the intention of clarifying their relation to system design. The final paper presents a method for concept evaluation in the earliest stages of design. A comparative function based failure analysis is conducted during the concept stage to aid in design selection. Selecting concepts that show promising failure traits early in the design process will improve the reliability and survivability of the final system. en
dc.language.iso en_US en
dc.subject Wave Energy en
dc.subject Wave Power en
dc.subject Survivability en
dc.subject Reliability en
dc.subject.lcsh Electric current converters -- Design and construction en
dc.subject.lcsh Electric power production -- Equipment and supplies -- Design and construction en
dc.subject.lcsh Ocean wave power -- Pacific Ocean en
dc.title Towards reliable and survivable ocean wave energy converters en
dc.type Thesis/Dissertation en
dc.degree.name Master of Science (M.S.) in Mechanical Engineering en
dc.degree.level Master's en
dc.degree.discipline Engineering en
dc.degree.grantor Oregon State University en
dc.contributor.committeemember Tumer, Irem Y.
dc.contributor.committeemember Brekken, Ted
dc.contributor.committeemember Tadepalli, Prasad

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