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A Technology of Electrical Energy Generated From Ocean Power Using Flexible Piezoelectric Device

[+] Author Affiliations
Hidemi Mutsuda, Kenta Kawakami, Takayuki Kurokawa, Yasuaki Doi, Yoshikazu Tanaka

Hiroshima University, Higashi Hiroshima, Japan

Paper No. OMAE2010-20103, pp. 313-321; 9 pages
  • ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering
  • 29th International Conference on Ocean, Offshore and Arctic Engineering: Volume 3
  • Shanghai, China, June 6–11, 2010
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4911-8 | eISBN: 978-0-7918-3873-0
  • Copyright © 2010 by ASME


We have developed a way of harvesting electrical energy from the ocean power, e.g. tide, current, wave, breaking wave and vortex, using a flexible piezoelectric device consisting of piezo-electric polymer film (PVDF), silicon and natural rubber. The flexible piezoelectric device (FPED) is a hydro-electric ocean energy converter designed to convert renewable energy harnessed from ocean energy into usable electricity. The basic concept generating electric power using FPED is to utilize fluid structure interaction, e.g. flattering, flapping and periodic bending, caused by ocean energy. The FPED deformed by kinetic energy of the ocean power stores elastic energy and also converts it to the electric energy. We carried out some experiments using wave tank and the water tunnel with a bluff body. We have confirmed the electricity generated by wave, current and vortex using the FPED. The developed FPED could be a new technology of harvesting electrical energy from the ocean power. A floating platform attached FPED could be coupled with an offshore wind turbine as a hybrid energy system in ocean space.

Copyright © 2010 by ASME
Topics: Oceans



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