A remotely operated hydrokinetic turbine to reduce the levelized cost of energy of marine turbines

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dc.contributor.authorHamta, Armin
dc.contributor.examiningcommitteeBalakrishnan, Subramaniam (Mechanical Engineering) Rajapakse, Athula (Electrical and Computer Engineering)en_US
dc.contributor.supervisorBibeau, Eric (Mechanical Engineering)en_US
dc.date.accessioned2016-08-15T18:10:52Z
dc.date.available2016-08-15T18:10:52Z
dc.date.issued2016
dc.degree.disciplineMechanical Engineeringen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractA 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.noteOctober 2016en_US
dc.identifier.urihttp://hdl.handle.net/1993/31579
dc.language.isoengen_US
dc.rightsopen accessen_US
dc.subjecthydrokinetic turbineen_US
dc.subjectcounter-torque mechanismen_US
dc.subjectbuoyen_US
dc.subjectmarineen_US
dc.titleA remotely operated hydrokinetic turbine to reduce the levelized cost of energy of marine turbinesen_US
dc.typemaster thesisen_US
local.subject.manitobayesen_US
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