Recent advances in wave energy conversion systems: From wave theory to devices and control strategies

Gallutia, Daniel; Fard, Majid T.; Soto, Mariantonieta Gutierrez; He, Jiangbiao

doi:10.1016/j.oceaneng.2022.111105

Cited by 33 publications

(12 citation statements)

References 117 publications

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“…Especially, in 2012, Wang's group proposed the triboelectric nanogenerator (TENG), which is a powerful technology to convert mechanical energy into electrical energy by coupling triboelectrification and electrostatic induction. [8][9][10] Since its invention, a variety of TENGs with different structures and functions have been developed, gradually innovating mankind's concept of energy harvesting. [11][12][13][14] Although many TENGs exist for ocean wave energy harvesting, the harsh nature of the marine environment, such as seawater corrosion and wave impact, makes the TENGs susceptible to damage.…”

Section: Introductionmentioning

confidence: 99%

Fluid Oscillation‐Driven Bi‐Directional Air Turbine Triboelectric Nanogenerator for Ocean Wave Energy Harvesting

Yang,

Zhang,

et al. 2024

Advanced Energy Materials

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Ocean wave energy is one of the important renewable energy sources. However, random, low‐frequency, and micro‐amplitude characteristics of ocean waves make it difficult for traditional electromagnetic generators to collect wave energy efficiently. The emergence of triboelectric nanogenerator (TENG) provides an extremely effective technical means for the collection of low‐frequency and micro‐amplitude wave energy. In this work, a non‐contact turntable‐structured oscillating water column TENG (OWC‐TENG) is designed by combining an OWC wave energy conversion mechanism with a TENG for the first time. The OWC is optimized through simulation experiments according to the principles of ship hydrostatics and wave theory. The output performances of the OWC‐TENGs with different structural parameters under different water wave excitation conditions are then tested. The TENG delivers a maximum output current of 55.45 µA and an output power of 5.28 mW, which corresponds to a power density of 114.8 W m−3, enabling a stable power supply for small sensors at sea. This work provides a new solution to the efficient collection of low‐frequency micro‐amplitude ocean wave energy for powering various offshore equipments, presenting broad application prospects in ocean blue energy development and offshore Internet of Things.

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Section: Introductionmentioning

confidence: 99%

Fluid Oscillation‐Driven Bi‐Directional Air Turbine Triboelectric Nanogenerator for Ocean Wave Energy Harvesting

Yang,

Zhang,

et al. 2024

Advanced Energy Materials

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“…The operating system of an OWSC (Figure 1) consists on capturing the horizontal component of the waves, which is responsible for causing the oscillatory movement of a floating flap back and forth, driving a hydraulic piston, which powering a turbine for generating electricity (Gallutia et al, 2022). These structures can be installed completely submerged (Figure 2a) or partially submerged on floating platforms (Figure 2b), which represents a flexibility of the system, allowing the OWSC's to be located in different regions of the ocean.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of an oscillating wave surge converter: an analysis on the influence of the bottom slope

Vargas¹,

Schettini²,

Scapin³

2023

S. F. J. of Dev.

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The Oscillating Wave Surge Converter represents a technology with great potential for generating electricity from ocean waves, promoting energy continuously throughout a day. Its development is on a pre-commercial scale and has been encouraging several companies and institutions to invest in the improvement and study of this conversion system. Simulations in Computational Fluid Dynamics are very important tools for the development of these converters, since they provide essential details for the analysis of the variables that influence the system. In this context, the present work uses the Large Eddy Simulation modeling to study the influence of the bottom slope on the device dynamics, which is performed using the OpenFOAM v.4.1 computational code and its extension OlaFlow. The model used in the analysis is two-dimensional and based on the Wall-Adapting Local Eddy-Viscosity methodology, while a structured mesh is applied. Through a detailed analysis, it was observed that the converter hydrodynamics is strongly influenced by the bottom slope, which is responsible for the intensification of the captured power in regions with slopes lower than 5º, and for the power decrease in cases where the slope exceeds 15º. Significant increases in slope can cause a decrease up to 28% in the converter excitation torque, significantly affecting its performance in electric power generation.

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“…Nowadays, WECs have several stages of development and they are the subject of investigation around the world [4,5]. As a matter of fact, a number of studies in the literature have been focused in the WEC design optimization, as well as in the control strategy methodologies to increase the WEC performance.…”

Section: Introductionmentioning

confidence: 99%

“…This aspect allows to improve the WECs due to the wave conditions at the operation site greatly affect their performance. For this purpose, having experimental facilities that enable the design and development of these new technologies is required to convert the energy available in waves into electricity [4]- [6].…”

Section: Introductionmentioning

confidence: 99%

Design of a water channel to model the wave conditions in the Colombian Pacific Ocean

Rubio-Clemente¹,

Velásquez²,

Chica³

2022

REPQJ

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During the design process of an efficient wave energy converter (WEC), a crucial aspect is its performance evaluation in wave channels able to generate dynamic waves simulating the ocean conditions. This work presents the design of a water channel that simulates the wave conditions of the Pacific Ocean in Colombia. The designed channel has a rectangular cross-section with width, length and depth equal to 0.49 m, 7.35 m and 1.47 m, respectively. In the channel, the steepness ratio can vary from 0.0134 to 0.544 for a wavelength of 1.47 m. Additionally, the channel was computationally modelled in order to know the behaviour of the waves generated. In this regard, an efficient WEC able to take profit of the Colombia's capacity for producing electricity from waves is feasible, contributing to the reduction of greenhouse gases and, therefore, to sustainable development.

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Recent advances in wave energy conversion systems: From wave theory to devices and control strategies

Cited by 33 publications

References 117 publications

Fluid Oscillation‐Driven Bi‐Directional Air Turbine Triboelectric Nanogenerator for Ocean Wave Energy Harvesting

Fluid Oscillation‐Driven Bi‐Directional Air Turbine Triboelectric Nanogenerator for Ocean Wave Energy Harvesting

Dynamics of an oscillating wave surge converter: an analysis on the influence of the bottom slope

Design of a water channel to model the wave conditions in the Colombian Pacific Ocean

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