Deep ocean wave energy conversion using a cycloidal turbine

Siegel, Stefan; Jeans, Tiger L.; McLaughlin, Thomas

doi:10.1016/j.apor.2011.01.004

Cited by 30 publications

(62 citation statements)

References 4 publications

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“…As shown in the table, the time step was varied by a factor of five and the wave number step by a factor of two. It should be noted that a similar resolution study was conducted earlier and therefore a good estimate for the values was available [1]. Also, due to the optimization of the simulation parameters, the simulation time was reduced by approximately an order of magnitude.…”

Section: Convergence Studymentioning

confidence: 89%

“…Proportional control is used for the blade pitch (i.e., bound circulation), such that ( ) ̂( ). This is a reasonable assumption as open loop wave generation results shown in [1] display a very linear relationship between the bound circulation and resulting wave height. As for rotary control of the WEC, the group velocity is estimated and compensated for as a phase delay.…”

Section: ( ) {mentioning

confidence: 99%

“…in the negative direction. Earlier simulations and experiments have shown that this configuration results in the best one-sided wave generation and therefore also the best wave cancellation [1].…”

Section: Geometry Modelingmentioning

confidence: 99%

“…The approach to viscous estimation has been peer reviewed in the context of the numerical simulation journal article [1]. No deficiencies or issues were found by the reviewers.…”

Section: Whether or Not The Theory And Mathematical Algorithms Were Pmentioning

confidence: 99%

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Cycloidal Wave Energy Converter

Siegel¹

2012

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Section: Convergence Studymentioning

confidence: 89%

Section: ( ) {mentioning

confidence: 99%

Section: Geometry Modelingmentioning

confidence: 99%

“…The approach to viscous estimation has been peer reviewed in the context of the numerical simulation journal article [1]. No deficiencies or issues were found by the reviewers.…”

Section: Whether or Not The Theory And Mathematical Algorithms Were Pmentioning

confidence: 99%

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Cycloidal Wave Energy Converter

Siegel¹

2012

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“…Among renewable energy resources, the possibility of extracting energy from the ocean has intrigued people for centuries. Many devices have been developed for ocean energy conversion, and numerous ocean energy generation systems have emerged [2][3][4][5][6][7]. Wave energy in China is distributed in the East China Sea and South China Sea; hence, most wave energy convertors (including test devices) are deployed in these two areas [8,9].…”

Section: Introductionmentioning

confidence: 99%

A Floating Ocean Energy Conversion Device and Numerical Study on Buoy Shape and Performance

Song

Zhang

Qian

et al. 2016

JMSE

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Wave and current energy can be harnessed in the East China Sea and South China Sea; however, both areas are subject to high frequencies of typhoon events. To improve the safety of the ocean energy conversion device, a Floating Ocean Energy Conversion Device (FOECD) with a single mooring system is proposed, which can be towed to avoid severe ocean conditions or for regular maintenance. In this paper, the structure of the FOECD is introduced, and it includes a catamaran platform, an oscillating buoy part, a current turbine blade, hydraulic energy storage and an electrical generation part. The numerical study models the large catamaran platform as a single, large buoy, while the four floating buoys were modeled simply as small buoys. Theoretical models on wave energy power capture and efficiency were established. To improve the suitability of the buoy for use in the FOECD and its power harvesting capability, a numerical simulation of the four buoy geometries was undertaken. The shape profiles examined in this paper are cylindrical, turbinate (V-shaped and U-shaped cone with cylinder), and combined cylinder-hemisphere buoys. Simulation results reveal that the suitability of a turbinate buoy is the best of the four types. Further simulation models were carried out by adjusting the tip radius of the turbinate buoy. Three performance criteria including suitability, power harvesting capability and energy capture efficiency were analyzed. It reveals that the turbinate buoy has almost the same power harvesting capabilities and energy capture efficiency, while its suitability is far better than that of a cylindrical buoy.

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Dynamics and control of ocean wave energy converters

Xie

Zuo

2013

Int. J. Dynam. Control

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Ocean wave technology is one of the most exciting areas due to vast but untapped energy potential worldwide. Technologies on ocean wave harvesting energy have been explored for centuries and are still undergoing with challenges. This paper provides a comprehensive literature review on the progress of classical and modern control strategies, including latching control, declutch control, reactive control, model predictive control, state space control, etc. For three major types of ocean wave energy converters (OWECs), i.e. oscillating-body wave energy converter (including point absorber, attenuator and terminator), oscillating water column and overtopping device. It also introduces the nature of ocean waves, mathematical models of ocean wave energy and the hydrodynamics of the representative OWECs.

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Deep ocean wave energy conversion using a cycloidal turbine

Cited by 30 publications

References 4 publications

Cycloidal Wave Energy Converter

Cycloidal Wave Energy Converter

A Floating Ocean Energy Conversion Device and Numerical Study on Buoy Shape and Performance

Dynamics and control of ocean wave energy converters

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