Turbine system and mooring systems

The dual-motion apparatus addresses the inefficiencies in tidal turbine deployment and maintenance by using a combination of rotational and linear movements to lift turbines above the water surface, reducing energy consumption and assembly costs.

CA3054007CActive Publication Date: 2026-09-22SUSTAINABLE MARINE ENERGY
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Patent Information

Application Number
CA3054007
Authority / Receiving Office
CA · CA
Patent Type
Patents
Current Assignee / Owner
Priority Date
2017-05-10
Filing Date
2018-02-23
Publication Date
2026-09-22
Estimated Expiration
2038-02-23

AI Technical Summary

Technical Problem

Existing tidal turbine systems face challenges in deploying, operating, and maintaining turbines efficiently, particularly in deep waters, due to impracticality in raising turbines above the water surface for transportation, maintenance, and assembly, which increases costs and complexity.

Method used

A dual-motion apparatus is employed to raise turbines using a combination of rotational and linear movements, allowing turbines to be lifted above the water surface for maintenance and transportation, utilizing a guidance system and upward force mechanism, such as a winch and pulley system, to facilitate a controlled arced path.

Benefits of technology

This method reduces the energy required for lifting turbines, simplifies maintenance and assembly processes, and lowers the overall cost and complexity by minimizing the draft of the assembly, enabling efficient deployment and retrieval.

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Abstract

A turbine system has an apparatus for raising a turbine relative to a support. The motion of the turbine as it is raised takes the form of an arc. The turbine support is a three-hulled variant in some cases. Also described is a turret mooring system for anchoring the turbine system in place at sea. The turret is attachable to the turbine assembly while the assembly is on land. The turbine assembly can then be towed to the anchoring site where the anchoring lines are attached to the turret. This simplifies the anchoring process, particularly in rough seas where attaching the turret to the assembly may be difficult or impossible. An alternate anchoring system comprising an upstream buoy anchored to an upstream anchoring point and a downstream buoy anchored to a downstream anchoring point is also described. This buoyant mooring system reduces the vertical component of the tension in the anchoring cables, and reduces the effect of pitching forces generated by the turbines.
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