A remotely operated hydrokinetic turbine to reduce the levelized cost of energy of marine turbines
dc.contributor.author | Hamta, Armin | |
dc.contributor.examiningcommittee | Balakrishnan, Subramaniam (Mechanical Engineering) Rajapakse, Athula (Electrical and Computer Engineering) | en_US |
dc.contributor.supervisor | Bibeau, Eric (Mechanical Engineering) | en_US |
dc.date.accessioned | 2016-08-15T18:10:52Z | |
dc.date.available | 2016-08-15T18:10:52Z | |
dc.date.issued | 2016 | |
dc.degree.discipline | Mechanical Engineering | en_US |
dc.degree.level | Master of Science (M.Sc.) | en_US |
dc.description.abstract | A novel hydrokinetic turbine system is proposed to address key commercialization challenges facing the marine energy industry. Challenges include addressing icing issues by eliminating equipment that pierce the water/air interface; reducing the levelized cost of energy by simplifying demanding deployment and retrieval procedures; and positioning the turbine in the water column to maximize annual power production. Results of the experimental test matrix shows successful operation of the scaled counter-torque mechanism which operates with a 20 cm diameter rotor and is stabilized from the reactive nature of two point masses located at opposite ends of a spoke connected to the nacelle. Static and dynamic analytical modeling, computer aided design, manufacturing, and experimental testing of the prototype is the methodology that validates the operation of the counter-torquing mechanism. The prototype turbine is tested in a laboratory water tunnel at Reynolds numbers of 94 x 10^3, 104 x 10^3, and 115 x 10^3; with the generator loads ranging from free-wheeling to 6.2 W; and available counter-torque capacity varying from 0% to 40%. The maximum power coefficient obtained during the tests is 48.3% at a rotor tip speed ratio of 4.5. This research advances the Technology Readiness Level of the proposed novel turbine system from a level one to a level four based on the U.S. Department of Energy definition for technology development. | en_US |
dc.description.note | October 2016 | en_US |
dc.identifier.uri | http://hdl.handle.net/1993/31579 | |
dc.language.iso | eng | en_US |
dc.rights | open access | en_US |
dc.subject | hydrokinetic turbine | en_US |
dc.subject | counter-torque mechanism | en_US |
dc.subject | buoy | en_US |
dc.subject | marine | en_US |
dc.title | A remotely operated hydrokinetic turbine to reduce the levelized cost of energy of marine turbines | en_US |
dc.type | master thesis | en_US |
local.subject.manitoba | yes | en_US |
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