Ocean wave energy harvesting with a piezoelectric coupled buoy structure |
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| Institution: | 1. Khalifa University of Science, Technology & Research (KUSTAR), PO Box 127788, Abu Dhabi, UAE;2. Department of Mechanical Engineering, University of Manitoba, Winnipeg, Manitoba, Canada R3T 5V6;3. School of Mechanical and Automotive Engineering, Hubei University of Arts and Science, Xiangyang, Hubei 441053, China;1. Mechanical Engineering/Integrated Engineering Unit, Graduate School of Engineering, Hiroshima University, Japan;2. SAKAI OVEX Co. Ltd., Japan;1. Department of Mechanical Engineering, University of Houston, Houston, TX 77204-4006, USA;2. Materials Science and Engineering Program, University of Houston, Houston, TX 77204, USA;3. Advanced Manufacturing Institute (AMI), University of Houston, Houston, TX 77204, USA;4. Texas Center for Superconductivity at UH (TcSUH), University of Houston, Houston, TX 77204, USA;5. Department of Mechanical Engineering, Brigham Young University, Provo, UT 84602, USA;1. Department of Mechanics, Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, United Arab Emirates;2. Department of Mechanics and Aerospace Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, PR China;1. School of Urban Construction, Yangtze University, Jingzhou, Hubei, 434000, China;2. Department of Mechanical Engineering, Hubei University of Arts and Science, Xiangyang, 441053, China |
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| Abstract: | An expedient piezoelectric coupled buoy energy harvester from ocean waves is developed. The harvester is made of several piezoelectric coupled cantilevers attached to a floating buoy structure, which can be easily suspended in the intermediate and deep ocean for energy harvesting. In the buoy structure, a slender cylindrical floater is attached on a large sinker. The energy harvesting process is realized by converting the transverse ocean wave energy to the electrical energy via the piezoelectric patches mounted on the cantilevers fixed on the buoy. A smart design of the buoy structure is developed to increase the energy harvesting efficiency by investigation of the effects of the sizes of the floater and the sinker. A numerical model is presented to calculate the generated electric power from buoy energy harvester. The research findings show that up to 24 W electric power can be generated by the proposed expedient buoy harvester with the length of the piezoelectric cantilevers of 1 m and the length of the buoy of 20 m. The technique proposed in this research can provide an expedient, feasible and stable energy supply from the floating buoy structure. |
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| Keywords: | Energy harvesting Piezoelectricity Buoy Ocean energy Numerical model Optimal design |
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