scholarly journals The Contribution of Environmental Siting and Permitting Requirements to the Cost of Energy for Wave Energy Devices

2014 ◽  
Author(s):  
Andrea E. Copping ◽  
Simon H. Geerlofs ◽  
Luke A. Hanna
Keyword(s):  
Wave Energy ◽  
Energy Devices ◽  
Cost Of Energy ◽  
The Cost

The Fair Evaluation of Wave Energy Converters

2020 ◽  
Author(s):  
Jian Tan ◽  
Henk Polinder ◽  
Peter Wellens ◽  
Sape Miedema
Keyword(s):  
Wave Energy ◽  
Evaluation Method ◽  
Control Strategies ◽  
Optimization Methods ◽  
Size Optimization ◽  
Point Absorber ◽  
Wave Energy Converters ◽  
Cost Of Energy ◽  
The Cost ◽  
Energy Converters

Abstract In this paper, a fair evaluation method of WECs (Wave Energy Converters) is established based on frequency domain simulation. In this fair evaluation, size optimization and downsizing of PTO (Power Take-Off) capacity are included to minimize the Cost of Energy for the concerned wave location. Based on this fair evaluation, a techno-economic evaluation of a generic point absorber is conducted for a specific wave location, and two different control strategies of PTO are considered. The results show that this fair evaluation method can contribute to the improvement of techno-economic performance of WECs. Furthermore, a comparison among three different size optimization methods of WECs is performed.

scholarly journals Techno-Economic Optimisation for a Wave Energy Converter via Genetic Algorithm

2020 ◽  
Vol 8 (7) ◽  
pp. 482 ◽  
Author(s):  
Sergej Antonello Sirigu ◽  
Ludovico Foglietta ◽  
Giuseppe Giorgi ◽  
Mauro Bonfanti ◽  
Giulia Cervelli ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Wave Energy ◽  
Capital Expenditure ◽  
Ocean Waves ◽  
Wave Energy Converter ◽  
Width Ratio ◽  
Energy Converter ◽  
Essential Condition ◽  
Cost Of Energy ◽  
The Cost

Although sea and ocean waves have been widely acknowledged to have the potential of providing sustainable and renewable energy, the emergence of a self-sufficient and mature industry is still lacking. An essential condition for reaching economic viability is to minimise the cost of electricity, as opposed to simply maximising the converted energy at the early design stages. One of the tools empowering developers to follow such a virtuous design pathway is the techno-economic optimisation. The purpose of this paper is to perform a holistic optimisation of the PeWEC (pendulum wave energy converter), which is a pitching platform converting energy from the oscillation of a pendulum contained in a sealed hull. Optimised parameters comprise shape; dimensions; mass properties and ballast; power take-off control torque and constraints; number and characteristics of the pendulum; and other subcomponents. Cost functions are included and the objective function is the ratio between the delivered power and the capital expenditure. Due to its ability to effectively deal with a large multi-dimensional design space, a genetic algorithm is implemented, with a specific modification to handle unfeasible design candidate and improve convergence. Results show that the device minimising the cost of energy and the one maximising the capture width ratio are substantially different, so the economically-oriented metric should be preferred.

Comparison of Mooring Solutions and Array Systems for Point Absorbing Wave Energy Devices

2018 ◽  
Author(s):  
Jonas W. Ringsberg ◽  
Hanna Jansson ◽  
Shun-Han Yang ◽  
Martin Örgård ◽  
Erland Johnson
Keyword(s):  
Systems Engineering ◽  
Wave Energy ◽  
Ocean Energy ◽  
Mooring Lines ◽  
Energy Capture ◽  
Energy Devices ◽  
Structure Response ◽  
Energy Technologies ◽  
Cost Of Energy ◽  
Reference Installation

Most of the ocean energy technologies are considered to be in a pre-commercial phase and need technical development. This study focuses on design of mooring solutions and compares array systems of a specific floating point-absorbing wave energy converter (WEC) developed by the company Waves4Power. A full-scale prototype of the WEC is installed in Runde (Norway) where it is moored with three polyester mooring lines, each having one floater and one gravity anchor. Based on this reference installation, the method of systems engineering was used to propose twenty-two conceptual mooring solutions for different array systems. They were compared and reduced to four top concepts in a systematic elimination procedure using Pugh and Kesselring matrices. The top concepts were assessed in detail by means of LCOE (levelised cost of energy), LCA (life cycle analysis) and risk analyses. The fatigue life of the mooring lines and the energy capture were calculated using results obtained from coupled hydrodynamic and structure response analyses in the DNV-GL DeepC software. Two final concepts were proposed for the water depths 75 and 200 m.

Design of Mooring Solutions and Array Systems for Point Absorbing Wave Energy Devices—Methodology and Application

2019 ◽  
Vol 142 (3) ◽  
Author(s):  
Jonas W. Ringsberg ◽  
Hanna Jansson ◽  
Martin Örgård ◽  
Shun-Han Yang ◽  
Erland Johnson
Keyword(s):  
Systems Engineering ◽  
Wave Energy ◽  
Ocean Energy ◽  
Mooring Lines ◽  
Energy Capture ◽  
Energy Devices ◽  
Structure Response ◽  
Energy Technologies ◽  
Cost Of Energy ◽  
Reference Installation

Abstract Most of the ocean energy technologies are considered to be in a pre-commercial phase and need technical development. This study focuses on the design of mooring solutions and compares array systems of a specific floating point-absorbing wave energy converter (WEC) developed by the company Waves4Power. A full-scale prototype of the WEC is installed in Runde (Norway) where it is moored with three polyester mooring lines, each having one floater and one gravity anchor. Based on this reference installation, the method of systems engineering was used to propose 22 conceptual mooring solutions for different array systems. They were compared and reduced to four top concepts in a systematic elimination procedure using Pugh and Kesselring matrices. The top concepts were assessed in detail by means of levelized cost of energy (LCOE), life cycle analysis (LCA), and risk analyses. The fatigue life of the mooring lines and the energy capture were calculated using results obtained from coupled hydrodynamic and structure response analyses in the dnv-gl deepc software. Two final concepts were proposed for the water depths 75 and 200 m.

scholarly journals A practical approach to wave energy modeling and control

2020 ◽  
Author(s):  
Ryan G. Coe ◽  
Giorgio Bacelli ◽  
Dominic Forbush
Keyword(s):  
Wave Energy ◽  
Impedance Matching ◽  
Control Design ◽  
Dynamics Modeling ◽  
Control Logic ◽  
Modeling And Control ◽  
Energy Devices ◽  
Fm Radio ◽  
The Cost ◽  
And Control

The potential for control design to dramatically improve the economic viability of wave energy has generated a great deal of interest and excitement. However, for a number of reasons, the promised benefits from better control designs have yet to be widely realized by wave energy devices and wave energy remains a relatively nascent technology. This brief paper summarizes a simple, yet powerful approach to wave energy dynamics modeling, and subsequent control design based on impedance matching. Our approach leverages the same concepts that are exploited by a simple FM radio to achieve a feedback controller for wave energy devices that approaches optimal power absorption. If fully utilized, this approach can deliver immediate and consequential reductions to the cost of wave energy. Additionally, this approach provides the necessary framework for control co-design of a WEC, in which an understanding of the control logic allows for synchronous design of the device control system and hardware.

scholarly journals A practical approach to wave energy modeling and control

2020 ◽  
Author(s):  
Ryan G. Coe ◽  
Giorgio Bacelli ◽  
Dominic Forbush
Keyword(s):  
Wave Energy ◽  
Impedance Matching ◽  
Control Design ◽  
Dynamics Modeling ◽  
Control Logic ◽  
Modeling And Control ◽  
Energy Devices ◽  
Fm Radio ◽  
The Cost ◽  
And Control

The potential for control design to dramatically improve the economic viability of wave energy has generated a great deal of interest and excitement. However, for a number of reasons, the promised benefits from better control designs have yet to be widely realized by wave energy devices and wave energy remains a relatively nascent technology. This brief paper summarizes a simple, yet powerful approach to wave energy dynamics modeling, and subsequent control design based on impedance matching. Our approach leverages the same concepts that are exploited by a simple FM radio to achieve a feedback controller for wave energy devices that approaches optimal power absorption. If fully utilized, this approach can deliver immediate and consequential reductions to the cost of wave energy. Additionally, this approach provides the necessary framework for control co-design of a WEC, in which an understanding of the control logic allows for synchronous design of the device control system and hardware.

scholarly journals A practical approach to wave energy modeling and control

2020 ◽  
Author(s):  
Ryan G. Coe ◽  
Giorgio Bacelli ◽  
Dominic Forbush
Keyword(s):  
Wave Energy ◽  
Impedance Matching ◽  
Control Design ◽  
Dynamics Modeling ◽  
Control Logic ◽  
Modeling And Control ◽  
Energy Devices ◽  
Fm Radio ◽  
The Cost ◽  
And Control

The potential for control design to dramatically improve the economic viability of wave energy has generated a great deal of interest and excitement. However, for a number of reasons, the promised benefits from better control designs have yet to be widely realized by wave energy devices and wave energy remains a relatively nascent technology. This brief paper summarizes a simple, yet powerful approach to wave energy dynamics modeling, and subsequent control design based on impedance matching. Our approach leverages the same concepts that are exploited by a simple FM radio to achieve a feedback controller for wave energy devices that approaches optimal power absorption. If fully utilized, this approach can deliver immediate and consequential reductions to the cost of wave energy. Additionally, this approach provides the necessary framework for control co-design of a WEC, in which an understanding of the control logic allows for synchronous design of the device control system and hardware.

scholarly journals Study review of the electrical power generation: Wave energy converting device system from the swell

2021 ◽  
Vol 1201 (1) ◽  
pp. 012001
Author(s):  
J V Taboada ◽  
V D Casás ◽  
X Yu ◽  
G M Gemilang ◽  
P Sampaio
Keyword(s):  
Power Generation ◽  
Electrical Power Generation ◽  
Wave Energy ◽  
Electrical Power ◽  
Design Parameters ◽  
Cost Of Energy ◽  
Registration Number ◽  
Kinematic Behaviour ◽  
The Cost ◽  
Energy Converting

Abstract This paper presents the design of an innovative wave energy converter, namely, Electrical Power Generation - WEC Device System from the Swell, abbreviated as WECFS. This WEC device has been registered for a patent in the Spanish Office of the Patents and Brands (OEPM) with the registration number of the innovative utility model-Patent Model: 202131440(5). The study reported in this paper endeavours to demonstrate the technical feasibility, functional mechanical-kinematic behaviour, and the performance of the proof-of-concept WEC device system, in order to determine their energy extraction capacities and functionalities. The overall energy extracted with eight electrical generators A/C is 0.185 MWatts calculated analytically. The levelized cost of energy is a very important metric in determining whether to move forward with the project, where the cost of energy target has been as cheap as $0.07kWh; this value of LCOE could be improved with optimisations on the practical design parameters. This preliminary study investigates the factors influencing standardized and industrialized for the new WEC device system and can be used to guide the optimization of this type of device technology.

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