Experimental study on overtopping performance of a circular ramp wave energy converter

Liu, Zhen; Shi, Hongda; Cui, Ying; Kim, Kilwon

doi:10.1016/j.renene.2016.12.040

Cited by 37 publications

(17 citation statements)

References 15 publications

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“…From the perspective of structure of underwater direct drive wave energy converter (UDDWEC), many wave-to-wire models are summarized in [7], such as overtopping converters [8,9], oscillating water column converters [10,11] and wave-activated converters with different power take-off (PTO) systems, including hydraulic turbines [12][13][14], rotating generator with gearbox [15], linear generator [16,17] and so on. The mathematical models of PTO is shown in [18].…”

Section: Introductionmentioning

confidence: 99%

Resonance Control Based on Hydrodynamic Analysis for Underwater Direct Drive Wave Energy Converter

Huang

Tan

et al. 2021

JMSE

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Wave energy has great prospect among many forms of marine renewable energy for its high density and storage. This paper proposes an underwater direct drive wave energy converter (UDDWEC), which is composed of a submerged point absorbing buoy and a linear-rotating axial flux permanent magnetic generator (LR-AFPMG). In addition, a maximum energy capture control strategy, resonance control, is derived for UDDWEC, based on small amplitude oscillation and hydrodynamic analysis. The proposed control strategy assumes the availability of sea condition such as wave height and period. This control strategy has three main characteristics. Firstly, this control strategy is derived based on hydrodynamic analysis of the submerged point absorber. Added mass, radiation damping and other hydrodynamic parameters are obtained to participate in UDDWEC dynamic model. Secondly, a LR-AFPMG is applied as power take-off device to realize energy conversion, which can improve the power density. Thirdly, small amplitude oscillation can be changed into long stroke rotary motion through the LR-AFPMG. The reliability and effectiveness of the proposed control strategy are assessed at various operation conditions for a heaving system and the validity for the UDDWEC is verified.

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Section: Introductionmentioning

confidence: 99%

Resonance Control Based on Hydrodynamic Analysis for Underwater Direct Drive Wave Energy Converter

Huang

Tan

et al. 2021

JMSE

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“…Overtopping devices have demonstrated some advantages over other WECs: unstable wave energy can be converted into relatively stable static energy of the water body, which can be used easily; low-head hydro turbine technology is well established in hydroelectric engineering. Consequently, overtopping performance has become a key factor in determining the reservoir capacity and power output duration [4]. Figure 2 presented about Wave Energy Converters (WEC) consist of Oscillating Water Column (OWC), Oscillating Bodies (OB), and Overtopping that developed new technologies by industry or team researcher from another country or institution.…”

Section: Introductionmentioning

confidence: 99%

Computational Fluid Dynamics (CFD) Simulation for Designing Mooring Bitts Position at the Barge for Wave Energy Conversion (WEC)

et al. 2020

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Potential wave energy in Indonesia between 5 kW m–1 to 20 kW m–1 depending on-site location coastline. This research in ocean energy of Wave Energy Conversion (WEC) is wave activated body using the floating or motion hull due to kinetic and momentum energy from an ocean wave. The pendulum movement cause by a floating hull to drive the electric generator. The shape of the hull, displacement, and position point of the mooring line greatly influences the movement of the hull. This paper discusses how to computational fluid dynamics (CFD) simulation can solve and determine the best mooring line position in the hull. Moreover, the shape of the hull at under waterline or drought has slope angle 45°, length overall 3 m, breadth 1.5 m, depth 2 m, and draft 0.65 m. One of the boundary conditions in the domain CFD, the direction of a wave from inlet boundary to starboard or port side using regular wave. The position both of mooring bitts are at forwarding perpendicular and after perpendicular. Three-position of mooring bitts that have simulated CFD: under the waterline, (ii) at the waterline, and (iii) up waterline. The result of simulation that the best position of mooring bitts is at the waterline.

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“…Several types of hydro-turbine have been invented, such as the Kaplan turbine, Francis turbine, Pelton turbine and et cetera. Several wave energy conversion systems such as Tapchan [10], Crown [25], Aquabuoy [7], Wave Dragon [26], Overtopping Breakwater for Energy Conversion (OBREC) and Seawave Slot-Cone Generator (SSG) [27] and et cetera have used this PTO system.…”

Section: Introductionmentioning

confidence: 99%

Hydraulic Power Take-Off Concepts for Wave Energy Conversion System: A Review

et al. 2019

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Ocean wave energy is one of the most abundant energy sources in the world. There is a wide variety of wave energy conversion systems that have been designed and developed, resulting from the different ways of ocean wave energy absorption and also depending on the location characteristics. This paper reviews and analyses the concepts of hydraulic power take-off (PTO) system used in various types of wave energy conversion systems so that it can be a useful reference to researchers, engineers and inventors. This paper also reviews the control mechanisms of the hydraulic PTO system in order to optimise the energy harvested from the ocean waves. Finally, the benefits and challenges of the hydraulic PTO system are discussed in this paper.

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Experimental study on overtopping performance of a circular ramp wave energy converter

Cited by 37 publications

References 15 publications

Resonance Control Based on Hydrodynamic Analysis for Underwater Direct Drive Wave Energy Converter

Resonance Control Based on Hydrodynamic Analysis for Underwater Direct Drive Wave Energy Converter

Computational Fluid Dynamics (CFD) Simulation for Designing Mooring Bitts Position at the Barge for Wave Energy Conversion (WEC)

Hydraulic Power Take-Off Concepts for Wave Energy Conversion System: A Review

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