Wind turbine on a floating support stabilized by a raised anchoring system

Patent metadata

Field	Value
Publication number	US-9739267-B2
Application number	US-201314396984-A
Country	US
Kind code	B2
Filing date	Apr 10, 2013
Priority date	Apr 27, 2012
Publication date	Aug 22, 2017
Grant date	Aug 22, 2017

Abstract

A wind power system includes a wind turbine resting on a floating support and an anchoring system for anchoring the wind power system connected to the wind power system by attachment points. The wind power system has the attachment points raised above the waterline of the floating support to a height with respect to the waterline determined so as to counterbalance an overturning moment of the wind turbine subjected to a given wind speed.

First claim

The invention claimed is:

1. A wind power system comprising a wind turbine resting on a floating support and means for anchoring the system, connected to said system by attachment points, characterized in that said system comprises means for raising said attachment points above a waterline of said floating support, said means for raising said attachment points raising said attachment points to a height with respect to the waterline, the height with respect to the waterline being determined so as to counterbalance an overturning moment of the wind turbine subjected to a given wind speed.

2. A system as claimed in claim 1 , characterized in that said attachment points are located above a freeboard of the floating support.

3. A system as claimed in claim 1 , wherein said means for raising said attachment points comprise beams, or beams and cables.

4. A system as claimed in claim 3 , wherein the beams are tubular metal supports, or metal supports of variable section, or truss beams.

5. A system as claimed in claim 1 , wherein the means for raising said attachment points are mechanically connected to a tower of the wind turbine.

6. A system as claimed in claim 1 , wherein the means for raising said attachment points are mechanically connected to one another by beams or cables, so as to provide flexural stiffening of said means for raising said attachment points.

7. A system as claimed in claim 1 , wherein the means for raising said attachment points comprise an extension of columns of the floating support.

8. A system as claimed in claim 1 , wherein the attachment points are located at different heights.

9. A wind power system, comprising:
a floating support;
a wind turbine supported on the floating support by a tower; and
an anchoring system for anchoring the floating support to a sea bed, the anchoring system including at least one anchor line and a fastener for securing one end of the at least one anchor line to the sea bed; and
attachment points provided on the floating support or on the tower configured to attach another end of the at least one anchor line, the attachment points being provided a predetermined distance above a waterline of the floating support, the predetermined distance being determined so as to counterbalance an overturning moment of the wind turbine subjected to a given wind speed.

10. A system as claimed in claim 9 , wherein the attachment points are provided above an upper part of the floating support.

11. A system as claimed in claim 10 , wherein the attachment points are connected to the floating support.

12. A system as claimed in claim 10 , wherein the attachment points are connected to the tower.

13. A system as claimed in claim 9 , wherein the attachment points are connected to the floating support.

14. A system as claimed in claim 9 , wherein the attachment points are connected to the tower.

Assignees

• Ifp Energies Now

Inventors

• Averbuch Daniel
• Poirette Yann
• Perdrizet Timothee

Classifications

• F03D13/22

  Foundations specially adapted for wind motors · CPC title

• Y02E10/727

  Offshore wind turbines · CPC title

• F05B2240/93

  on a structure floating on a liquid surface · CPC title

• B63B21/50

  Anchoring arrangements {or methods} for special vessels, e.g. for floating drilling platforms or dredgers · CPC title

• F03D7/02

  the wind motors having rotation axis substantially parallel to the air flow entering the rotor · CPC title