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Development of Wave Generation Module for Small Ships Using Dielectric Elastomer
Mikio Waki1, Seiki A. Chiba2, K. Ohyama3, S. Zhu3, Noriyuki Oya4 and K. Fujita5
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DOI:10.17265/2161-6221/2017.7-8.007
1. Wits Inc., 880-3 Oshiage, Sakura-City, Tochigi 329-1334, Japan
2. Chiba Science Institute, 3-8-18 Yakumo, Meguro-Ward, Tokyo 152-0023, Japan
3. Fukuoka Institute of Technology, 3-30-1 Wajiro-Higashi, Higashi-ku, Fukuoka 811-0295, Japan
4. KMC Corporation, 41, 2-chome, Tsukisan-cho, Minato-ku, Nagoya 455-8668, Japan
5. Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210, Japan
From 2007 to 2015, we installed DE (dielectric elastomer) generators on a buoy, and succeeded in a demonstration of power generation at sea. In 2011, we also pointed out that DE generators could be useful for ships for the first time in the world. Using the know-how obtained at that time, we have recently developed an innovative wave-power generator for small ships, which can generate electric power by the rocking movement of the ship. Mounting this device on a model ship, we carried out a demonstration experiment of the power generation in a wave-generation water-tank to verify its feasibility for practical use on a real ship. And 48% of wave energy (gross value) can be converted to electric energy, suggesting the realization of fairly high efficiency power generation, compared with the efficiency of the existing wave generators.
Dielectric elastomer, DE, electroactive polymer artificial muscle, wave power generator, ship.