A New Flapping-Hydrofoil Wave Power Generating Unmanned Ocean Vehicle

2016 ◽  
Author(s):  
Tao Sun ◽  
Jiangbin Zhao ◽  
Xinping Yan ◽  
Pengpeng Xu
Keyword(s):  
Wave Energy ◽  
Energy Harvester ◽  
Clean Energy ◽  
Sea Surface ◽  
Ocean Wave ◽  
Wave Power ◽  
Ocean Science ◽  
Ocean Wave Energy ◽  
Offshore Engineering ◽  
Further Development

To solve the issue of the energy supply for unmanned ocean vehicles, the ocean wave energy as an abundant and widely distributed renewable clean energy, provides a feasible way. This paper proposes a flapping-hydrofoil method applied to unmanned ocean vehicles, harnessing the ocean wave energy to generate power. The structure of the flapping-hydrofoil wave energy harvester is presented, including the internal transmission device and the design of the hydrofoil. Then the operation modes (buoyancy drive and electric drive) and the application prospects (operating on and under the sea surface) of the flapping-hydrofoil wave energy ocean vehicle are also discussed, with the sincere expectations of further development of the ocean science and technology as well as offshore engineering.

scholarly journals A Survey of Power Take-off Systems of Ocean Wave Energy Converters

2019 ◽  
Author(s):  
Zhenwei Liu ◽  
Ran Zhang ◽  
Han Xiao ◽  
Xu Wang
Keyword(s):  
Energy Conversion ◽  
Wave Energy ◽  
Clean Energy ◽  
Ocean Wave ◽  
Direct Drive ◽  
Wave Energy Conversion ◽  
Drive Power ◽  
Wave Energy Converters ◽  
Ocean Wave Energy ◽  
Energy Converters

Ocean wave energy conversion as one of the renewable clean energy sources is attracting the research interests of many people. This review introduces different types of power take-off technology of wave energy converters. The main focus is the linear direct drive power take-off devices as they have the advantages for ocean wave energy conversion. The designs and optimizations of power take-off systems of ocean wave energy converters have been studied from reviewing the recently published literature. Also, the simple hydrodynamics of wave energy converters have been reviewed for design optimization of the wave energy converters at specific wave sites. The novel mechanical designs of the power take-off systems have been compared and investigated in order to increase the energy harvesting efficiency.

Design of piezoelectric ocean-wave energy harvester using sway movement

2017 ◽  
Vol 260 ◽  
pp. 191-197 ◽  
Author(s):  
Won Seop Hwang ◽  
Jung Hwan Ahn ◽  
Se Yeong Jeong ◽  
Hyun Jun Jung ◽  
Seong Kwang Hong ◽  
...  
Keyword(s):  
Wave Energy ◽  
Energy Harvester ◽  
Ocean Wave ◽  
Ocean Wave Energy

The Study on Technology of Ocean Wave Energy Generation

2013 ◽  
Vol 724-725 ◽  
pp. 818-822
Author(s):  
Sheng Ye ◽  
Wei Jun Wang ◽  
Bing Li ◽  
Long Bo Mao
Keyword(s):  
Power Generation ◽  
Wave Energy ◽  
Energy Generation ◽  
Ocean Wave ◽  
Wave Power ◽  
Ocean Wave Energy ◽  
New Energy ◽  
Day By Day ◽  
Generation Technology ◽  
Wave Power Generation

As a source of a clean green renewable new energy, wave power generation is paid much attention by more countries while the decrease of the amount of the energy day by day. The conversion technology in the field of wave energy has tended to mature. Now it is running into commercial exploitation leve1. In this paper, the fundamental principles of ocean wave energy generation technology are presented. The classification and present situation of ocean wave power generation device are introduced. At last, some possible directions and prospects of wave energy generation technology are expatiated.

A Mathematical Model for a Gyroscopic Ocean-Wave Energy Converter

2013 ◽  
Author(s):  
H. Murakami ◽  
O. Rios
Keyword(s):  
Mathematical Model ◽  
Power Generation ◽  
Wave Energy ◽  
Ocean Waves ◽  
Ocean Wave ◽  
Scale Model ◽  
Design Parameters ◽  
Wave Power ◽  
Power Generator ◽  
Ocean Wave Energy

Global attempts to increase generation of clean and reproducible energy have contributed to considerable progress in ocean-wave power-generation technologies. The efficiency of ocean-wave energy converters has improved by almost an order of magnitude in the last decade. In this report, we consider a floating-type gyroscopic ocean-wave power-generator that has proven to generate 50 kW in a prototype test conducted by a Japanese company in 2012. A gyroscopic power generator consists of a buoy, a gimbal, and spinning rotors mounted on a gimbal. The gimbal is installed on the deck of the buoy and rotates when the buoy oscillates or rocks by ocean waves. The gimbal axis is connected to an electric generator. The objectives of our research are to understand quantitatively the mechanisms of gyroscopic ocean-wave power-generators and to improve the component design of the generator to maximize power output. To this end, we develop a mathematical model and a scale model of a gyroscopic ocean-wave power-generator. This integrated approach is to numerically simulate power generation and to clarify the effect of relevant design parameters.

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