Crestwing Tordenskiold

Crestwing has achieved its design through numerous physical tests in DHI and AAU. The size is determined relative to a particular wave environment. Crestwing is boarded as a ship, which enables maintenance in a dry and roomy engine room. The two pontoons are connected with strong hinges. Ensuring the strength of these hinges poses a task . Crestwing has, in cooperation with an experienced machine workshop, developed, built and tested onshore, a scalable PTO with efficiency higher than 90% of the absorbed energy to the power grid. The basic function of the system is this; a push rod moves a tooth rack over a cogwheel where the movement is set from linear to circular and drives a generator. The rotation increases through a speed up gear where a flywheel stabilizes the rotation and smoothes the electricity production. The work to date has resulted in a mechanical PTO that has been perfected on the basis of thorough, well-documented tests. The risk of wrecking is a main issue in the wave energy sector. Therefore it is an area Crestwing is very focused on. In cooperation with Seaflex, Crestwing has developed a flexible three-point mooring system. This system solves a good part of the mooring challenge such as preventing accidents and minimizing the environmental footprint of the installation on both sea surface and the seabed. The anchor connection to turret allows the WEC to turn 360° and has full automatic connection and disconnection. The flexible mooring lines allow Crestwing to exploit its full energy potential and minimize the pull of sudden forces from the waves. The three-point mooring system and the special designed mooring connection solve a good part of the challenge of the electrical connection. The electrical cable will be attached along one anchor line and led up through the anchor connection. The electrical outlet is kept dry in the anchor coupling when it is not connected. Work with components is ongoing with the Danish Partnership of Wave Energy in Denmark.

Technology Developer

Crestwing

Additional Information

Device Website

Device Status

Is the device actively being developed or is available for purchase (active)? Or has development or support ended (inactive)?

Active

Technology Type

Attenuator

Power Take-Off

Mechanism that converts the motion of the prime mover into a useful form of energy such as electricity, learn more

Direct Drive Generator

Max Rated Power Capacity

The maximum amount of electricity that can be produced by the device, as rated by the manufacturer.

2500 KW

Surface Expression

True

Estimated TRL

Estimated Technology Readiness Level scale from 1 to 9 with 9 being the most mature technology

TRL Last updated: 13 December 2020

6

Energy Resource

Wave

Water Column Position

Last Modified

31 December 2024

Projects Using Crestwing Tordenskiold

Citation Formats

“Crestwing Tordenskiold.” Marine Energy Projects Database: Devices, PRIMRE, United States Department of Energy, https://openei.org/wiki/PRIMRE/Databases/Projects_Database/Devices/Crestwing_Tordenskiold. Accessed <day> <monthRoman> <year>.

Marine Energy Projects Database: Devices. <year>. "Crestwing Tordenskiold." Accessed <monthRoman> <day>, <year>. https://openei.org/wiki/PRIMRE/Databases/Projects_Database/Devices/Crestwing_Tordenskiold.

PRIMRE/Databases/Projects Database/Devices/Crestwing Tordenskiold

Crestwing Tordenskiold

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