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PRIMRE/Databases/Projects Database/Devices/Azura
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Azura
Device is a multi-mode point absorber. It extracts power from both the heave and surge motions. The system produces power as a result of the relative rotational motion between the hull and float and the power is generated in a proprietary design called the PowerPod. The hull is an elongated structure that is oriented vertically in the water column, with the bottom fixed to a hinged connection on a foundation structure. The hull is allowed to oscillated in wave surge. A buoyant float is sandwiched between two prongs of the hull near the top of device and captures the heave motion of the wave. The bouyant float can oscillate, or rotate a full 360 degrees. The PowerPod converts the heave and surge motion of the wave into useful electricity. Two hydraulic cylinders which are driven by the eccentric shaft are located in the lower legs of the PowerPod in a flooded compartment. High pressure flow lines penetrate the bulkhead between the dry and wet portions of the PowerPod. All other components of the power take-off system are located in the upper horizontal member of the PowerPod. As the force of an approaching wave causes the float to rotate and the hull to heave and surge, the crankshaft drives the hydraulic cylinders. The pressure from the cylinders is accumulated and then used to drive a variable displacement hydraulic motor, which in turn drives an electrical generator, producing variable frequency alternating current
Additional Information
Device Status
Is the device actively being developed or is available for purchase (active)? Or has development or support ended (inactive)?
Active
Technology Type
Power Take-Off
Mechanism that converts the motion of the prime mover into a useful form of energy such as electricity, learn more
Hydraulic Generator
Max Rated Power Capacity
The maximum amount of electricity that can be produced by the device, as rated by the manufacturer.
20 KW
Surface ExpressionTrue
Estimated TRL
Estimated Technology Readiness Level scale from 1 to 9 with 9 being the most mature technology
TRL Last updated: 30 August 2023
7
Energy Resource
- Wave
Water Column Position
Surface
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Submerged - Mid
Entire Water Column
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Submerged - Bottom
Test Sites where Azura was tested
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Citation Formats
“Azura.” Marine Energy Projects Database: Devices, PRIMRE, United States Department of Energy, https://openei.org/wiki/PRIMRE/Databases/Projects_Database/Devices/Azura. Accessed <day> <monthRoman> <year>.
Marine Energy Projects Database: Devices. <year>. "Azura." Accessed <monthRoman> <day>, <year>. https://openei.org/wiki/PRIMRE/Databases/Projects_Database/Devices/Azura.
Last modified: 30 August 2023