Estimation of Stress in the Inner Framework Structure of a Single Heaving Buoy Wave Energy Converter
2012 (English)In: IEEE Journal of Oceanic Engineering, ISSN 0364-9059, Vol. 37, no 2, 309-317 p.Article in journal (Refereed) Published
This paper details a method for strain measurements in the inner framework structure of the single heaving buoy Wave Energy Converter (WEC). This type of the WEC consists of a linear direct drive generator placed on the sea floor and connected to the floating buoy through the connection line.
The study focuses on estimation of stress in the inner framework structure of the WEC using strain measurements in material. Stress in ocean structures is as important as maximum stress.The offshore experiment was made at the Lysekil research site a few kilometers from the Swedish west coast.Stresses had the maximum value when the translator hit an end stop. Interesting observations were made: compressive stress occurred in the framework crossbar at a sea state of 1.32 m waves, but both compressive and tensile stress occurred at a sea state of 3.2 m waves.
A computational procedure employs good results. Error estimation is calculated and represented. This work is a step that may influence future design of wave energy devices in terms of material aspect, survivability in a hard wave climate and cost-effective renewable energies.
Place, publisher, year, edition, pages
2012. Vol. 37, no 2, 309-317 p.
Calibration, Generators, Sea measurements, Strain, Strain measurement, Stress, Voltage measurement, ocean waves, stress measurement, tensile strength, wave power generation, WEC consists, compressive stress, floating buoy, inner framework structure, linear direct drive generator, single heaving buoy wave energy converter, strain measurements, stress estimation, tensile stress, Estimation of stress, wave energy converter (WEC)
Other Mechanical Engineering
IdentifiersURN: urn:nbn:se:uu:diva-159512DOI: 10.1109/joe.2012.2188614OAI: oai:DiVA.org:uu-159512DiVA: diva2:445303