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.

Development of Wave Power Generation Technology

2012 ◽  
Vol 512-515 ◽  
pp. 905-909
Author(s):  
Cui Ping Kuang ◽  
Peng Chen Liu ◽  
Yi Pan ◽  
Jie Gu
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Wave Energy ◽  
Wave Power ◽  
Existing Problems ◽  
Ocean Wave Energy ◽  
Power Generation Technology ◽  
Increasing Demand ◽  
Generation Technology ◽  
Wave Power Generation

With the increasing demand of energy, as a clean green renewable energy, ocean wave energy is paid much attention by the countries especially those along coasts. So far, wave power generation technology has experienced decades of development. In this paper, the development and the main wave power generation devices are introduced, moreover, the latest applications of wave energy and existing problems on wave power generation technology are presented.

scholarly journals Research On Wave Energy Generation Technology

2020 ◽  
Vol 165 ◽  
pp. 01021
Author(s):  
Yang Yuxin ◽  
Jin Zhemin
Keyword(s):  
Power Generation ◽  
Wave Energy ◽  
Energy Generation ◽  
Wave Power ◽  
Human Society ◽  
Marine Energy ◽  
Reduce Emissions ◽  
Save Energy ◽  
Generation Technology ◽  
Wave Power Generation

With the increasingly serious environmental pollution and the intensified energy war, the all-round development and utilization of marine energy will become an indispensable key link in China’s implementation of the maritime power strategy. In recent years, with the support of the state, China’s wave energy generation technology has made a key breakthrough.In order to protect the environment, save energy and reduce emissions, and promote the utilization of wave energy, this paper reviews the development history of application generation technology, summarizes its development from two aspects of optimization and application of wave energy conversion devices, and analyses the application examples of wave energy generation devices on ships. This paper summarizes the application trend of wave power generation devices on ships: wave power generation should be used as auxiliary and domestic electricity for ships and wave energy should be combined with other new energy sources. Wave energy application in marine power generation can effectively reduce emissions from ships, which is conducive to the sustainable development of human society.

A Mathematical Model With Preliminary Experiments of a Gyroscopic Ocean Wave Energy Converter

2015 ◽  
Author(s):  
Hidenori Murakami ◽  
Oscar Rios ◽  
Ardavan Amini
Keyword(s):  
Mathematical Model ◽  
Power Generation ◽  
Wave Energy ◽  
Equations Of Motion ◽  
Energy Generation ◽  
Wave Energy Converter ◽  
Ocean Wave ◽  
Scale Model ◽  
Energy Converter ◽  
Ocean Wave Energy

Global attempts to increase generation of clean and reproducible natural energy have greatly contributed to the progress of solar, wind, biomass, and geothermal energy generation. To meet the goal set by the Renewable Portfolio Standards (RPS) in the United States, it is advisable for several of the coastal states to tap into the least explored resource: ocean-wave energy. There are many advantages to ocean-wave energy generation. First, the energy per unit area is 20 to 30 times larger compared with solar and five to ten times larger when compared to wind energy. Second, waves are more easily predicted than wind. Currently, there are several challenges with capturing ocean energy: With respect to the environment, noise pollution and effects on marine life need to be taken into consideration; with respect to design, ocean-wave power generators need to withstand large waves due to hurricanes and be designed to lessen visual pollution. There are various methods and devices used to capture ocean wave energy. Point absorbers, such as PowerBuoy, can harness vertical or heaving motion into electricity while attenuators like Pelamis use the induced movement of its joints from the incoming waves. Unfortunately, many have few parameters that can be varied to optimize power generation and or suffer from the various challenges mentioned above. The gyroscopic ocean wave energy converter harnesses the rocking or pitching motion induced by the ocean waves and converts it into rotary motion that is then fed to a generator. Furthermore, it is a fully enclosed floating device that has several parameters that can be varied to optimize power output. Previous work has demonstrated the viability of such a device, but the theoretical modeling of these converters is still in its infancy compared to that of other ocean wave energy converters. The objective of the research presented is to fully understand the mechanisms of power generation in the gyroscopic ocean wave energy converter. Using the moving frame method, a mathematical model of the device is developed. The nonlinear equations of motion are derived through the use of this novel method and then solved numerically. The results are then used to optimize the system and identify key parameters and their effect on the output power generated. Additionally, the resulting equations serve as a tool for identifying an appropriate control strategy for the system. Finally, a scale model of a gyroscopic ocean wave energy converter is developed to validate the equations of motion that have been derived.

A Design for the Wave Power Generation Conversion Device

2014 ◽  
Vol 1030-1032 ◽  
pp. 472-475
Author(s):  
Shi Ming Wang ◽  
Yao Li ◽  
Hao Zhan ◽  
Ka Tian
Keyword(s):  
Power Generation ◽  
Wave Energy ◽  
Control Device ◽  
Wave Power ◽  
Good Prospect ◽  
Energy Devices ◽  
New Energy ◽  
Power Generation Equipment ◽  
Torque Capacity ◽  
Wave Power Generation

In recent years, the concept of renewable energy has been deepening and popularization, all kinds of new energy technology is developed by leaps and bounds, a growing number of wave energy devices has been put into use and has a very good prospect. In wave power generation equipment, the conversion transmission device is a very important unit, which involving energy transfer, adjustment, stable output and buffer storage, so it need to be well designed to satisfy the operational requirement by taking advantage of different parts. By analyzing the commonly used conversion transmission devices, the characteristics of transmission devices and wave power generation equipments, we proposing a design of a flexible transmission device which can change its torque capacity with clutch automatic control device, in the form of its layout to drive a train of thought for the design wave energy conversion.

scholarly journals A Review of the Optimization Design and Control for Ocean Wave Power Generation Systems

Energies ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 102
Author(s):  
Juanjuan Wang ◽  
Zhongxian Chen ◽  
Fei Zhang
Keyword(s):  
Power Generation ◽  
Wave Energy ◽  
Optimization Design ◽  
Electrical Energy ◽  
Ocean Waves ◽  
Ocean Wave ◽  
Wave Power ◽  
Optimization Control ◽  
Power Generation Systems ◽  
Wave Power Generation

Ocean wave power generation techniques (converting wave energy into electrical energy) have been in use for many years. The objective of this paper is to review the design, control, efficiency, and safety of ocean wave power generation systems. Several topics are discussed: the current situation of ocean wave power generation system tests in real ocean waves; the optimization design of linear generator for converting ocean wave energy into electrical energy; some optimization control methods to improve the operational efficiency of ocean wave power generation systems; and the current policy and financial support of ocean wave power generation in some countries. Due to the harsh ocean environment, safety is another factor that ocean wave power generation systems will face. Therefore, before the conclusion of this review, a damping coefficient optimization control method based on the domain partition is proposed to improve the efficiency and safety of ocean wave power generation systems.

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.

scholarly journals Design and Research of Double-Sided Linear Switched Reluctance Generator for Wave Energy Conversion

2018 ◽  
Vol 8 (9) ◽  
pp. 1700 ◽  
Author(s):  
Yan Chen ◽  
Min Cao ◽  
Chunyan Ma ◽  
Zhigang Feng
Keyword(s):  
Power Generation ◽  
Power Systems ◽  
Wave Energy ◽  
Structure Design ◽  
Wave Power ◽  
Direct Drive ◽  
Pull Force ◽  
Switched Reluctance ◽  
Continuous Power ◽  
Wave Power Generation

As a clean and renewable energy source, wave energy is of great significance in solving primary energy shortages and environmental pollution. Direct-drive wave power systems consisting of linear generators have attracted the attention of researchers from various countries. Linear Switched Reluctance Generator has the advantages of simple structure, sturdiness, reliable operation, suitable for harsh environments, and easy maintenance, aiming at the problem of single-sided magnetic pull force and serious coupling of phase winding of traditional linear switched reluctance generator, a Double-sided Linear Switched Reluctance Generator (DLSRG) for wave power generation is designed, and its electromagnetic characteristics (including coupling characteristics, magnetic saturation characteristics, and magnetic tension characteristics) are analyzed to verify the rationality of the structure and parameter selection. Finally, the power generation performance is studied. The joint simulation results show that the structure design of DLSRG is reasonable, overcomes the problem of single-sided magnetic pull force, the phase-to-phase coupling is negligible, and it has continuous power generation capability, and the power generation efficiency is as high as 80.6%. Therefore, DLSRG designed in this paper is suitable for wave power generation.

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.

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