Progress of Generating Technologies on Oceanic Wave Energy

2011 ◽  
Vol 71-78 ◽  
pp. 2452-2457
Author(s):  
Yu Jiong Gu ◽  
Jing Hua Huang ◽  
Li Jun Zhao ◽  
Bing Bing Wang
Keyword(s):  
Energy Conversion ◽  
Wave Energy ◽  
Energy Utilization ◽  
Wave Power ◽  
Marine Energy ◽  
The World ◽  
The Status ◽  
Oceanic Wave ◽  
Energy Conversion System ◽  
Conversion Technologies

Oceanic wave power has drawn wide attention in the field of oceanic energy utilization around the world due to its giant reserves and clean renewable energy. The utilization technologies of wave power have tended to be mature, and are running into or near commercial exploitation level. This paper fully summarizes the basic principle of wave power utilization technologies, especially its multiple energy conversion system. The status of oceanic wave energy conversion technologies and main oceanic wave generating devices around the world are presented. Furthermore, the research and application progress of oceanic wave power generating technologies are illustrated in detail. After all, from the trends and broad prospects, the utilization of wave power is of great importance for the exploitation of oceanic resources in the littorals. It is also vital for the development of islands far away from continents, as well as essential for the combination wave energy and other marine energy resources.

scholarly journals The Development of Wave Energy Conversion Device to Generate Electricity

2015 ◽  
Vol 773-774 ◽  
pp. 460-464 ◽  
Author(s):  
M.D. Lafsah ◽  
Mohd Zamri Ibrahim ◽  
Aliashim Albani
Keyword(s):  
Energy Conversion ◽  
Wave Energy ◽  
Power Device ◽  
Wave Power ◽  
Wave Energy Conversion ◽  
Electric Generator ◽  
Measurement Results ◽  
Conversion System ◽  
Energy Conversion System ◽  
Final System

The wave energy is one of promising resource for generating electricity in this country. A wave energy conversion system was designed and fabricated; the prototype was tested and its performance was analyzed. The invention herein proposed a system operated by wave resource. This configuration allows the wave resource working to generate electricity. Wave power device operated by the movement of floaters with varying speed connected to the mechanical racks. These mechanical racks move gears and pulleys, which giving forces to the pulley’s belts to rotate. This pulley’s belts connected to the electric generator that produces the electricity. The final system was tested in the coastal area near to Universiti Malaysia Terengganu (UMT) campus. The measurement results clearly show that the available wave resource could be harness into useful work for electric power generation.

Wave Power for U.S. Coast Guard First District Lighthouses

Solar Energy ◽  
2005 ◽  
Author(s):  
Andy Walker ◽  
Alicen Kandt ◽  
Donna Heimiller
Keyword(s):  
Energy Conversion ◽  
Wave Energy ◽  
Alternative Energy ◽  
Energy Content ◽  
Energy Resource ◽  
Coast Guard ◽  
Wave Power ◽  
Wave Energy Conversion ◽  
Submarine Cables ◽  
Conversion Technologies

Lighthouses and other navigational aids are situated near tumultuous seas and thus may be good candidates for early applications of wave energy conversion technologies. The U.S. Coast Guard First District is converting lighthouses’ electrical systems to solar power to divest itself of electrical submarine cables and overhead costs associated with cable maintenance. However, in some lighthouses solar conversion is impractical or may compromise historic preservation. Unless alternative energy sources become available for these locations, they will continue to use submarine cables to run on shore power. Lighthouse sites for which shoreline and wave characteristics are suitable would be good candidates for a wave energy demonstration project. This paper describes gravity wave physics and the characteristics of mechanical radiation (growth, propagation, diffraction, and shoaling). A simple expression for energy content of a wave train with a two-parameter Bretschneider spectrum is applied to spectral wave density data collected from 15 buoys to evaluate wave energy resource potential at 31 candidate lighthouse sites in New England. Annual average wave power per meter of wavecrest varied from 3.9 to 21.7 kW/m at the buoys, and from 3.9 to 9.2 kW/m (with an average of 5.0 kW/m) at the lighthouses (buoys with maximum wave power are far out to sea, but still influence the correlation). The performance characteristics of two types of wave energy conversion technologies are used to calculate annual energy delivery by way of example. The paper concludes with a discussion of economics and environmental and permitting issues. It identifies Seguin Island light off a point in Maine and Nauset Beach, Chatham, Nantucket, and Sankaty Head lights (on Nantucket Island and along the outer shore of Cape Cod) as the best sites to begin more detailed evaluations, based on a comparison of wave power and utility rates. Subsequent studies would include demand profile for lighthouses, supply profiles, and resulting storage requirements.

Potential Impacts of Hydrokinetic and Wave Energy Conversion Technologies on Aquatic Environments

Fisheries ◽  
2007 ◽  
Vol 32 (4) ◽  
pp. 174-181 ◽  
Author(s):  
Glenn Cada ◽  
James Ahlgrimm ◽  
Michael Bahleda ◽  
Tom Bigford ◽  
Stefanie Damiani Stavrakas ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Wave Energy ◽  
Aquatic Environments ◽  
Wave Energy Conversion ◽  
Conversion Technologies

scholarly journals Status of Marine Current Energy Conversion in China

2021 ◽  
Vol 4 (1) ◽  
pp. 11-23
Author(s):  
Hongwei Liu ◽  
AbuBakr S. Bahaj
Keyword(s):  
Energy Conversion ◽  
Policy Framework ◽  
Chinese Government ◽  
Renewable Energy Systems ◽  
Technology Deployment ◽  
Prototype Development ◽  
Marine Energy ◽  
The Status ◽  
Marine Current ◽  
Current Energy

Marine current energy conversion (MCEC) technologies are promising renewable energy systems with some full scale and semi-commercial turbines constructed and deployed in several countries around the world. In this work, we present the status of marine current energy and systems in China and policies geared to support these. Over the past ten years the Chinese government has provided a policy framework and financial supports for the development of MCEC technologies of various design philosophies which has resulted in significant technology deployment at sea. A review of these technologies – which have turbine capacities in the range 20 kW to 650 kW, mostly tested at sea – is presented in the paper. In addition, the paper also discusses Chinese plans for marine energy test sites at sea to support prototype development and testing and concludes with a view of future prospects for the marine energy technology deployment in China.

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