# US 2012/0073487 A1 · Floating platform for extracting wind energy

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- Number: US 2012/0073487 A1
- Document ID: US20120073487A1
- Status: Published application
- Kind: A1
- Application number: 13/257,179
- Filed: 2010-03-02
- Published: 2012-03-29
- Earliest claimed: 2009-03-17
- Assignees: Apia Xxi, S.A.
- Inventors: Marcos J. Pantaleon Prieto; Oscar R. Ramos Guiterrez; Miguel A. Gutierrez Martinez
- Web page: https://patentgrep.com/patent/US20120073487A1

## CPC

- B63B 35/44: Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices {(construction methods for floating offshore platforms B63B75/00)}
- F03D 13/25: specially adapted for offshore installation
- B63B 2035/446: {for converting wind energy into electric energy}
- F05B 2240/97: on a submerged structure
- Y02E 10/72: Wind turbines with rotation axis in wind direction
- Y02E 10/727: Offshore wind turbines
- Y02E 10/728: Onshore wind turbines
- B63B: SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING (arrangements of vessel ventilation, heating, cooling, or air-conditioning B63J2/00; floating substructures as supports of dredgers or soil-shifting machines E02F9/06)
- F03D: WIND MOTORS
- F05B: INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A floating platform for wind energy extraction, comprising a structure (S) which is the support for the assembly (P) made up of a wind turbine tower (3), a nacelle (2) and its corresponding rotor blades (1), whereby the support structure (S) is formed by an upper structure (4) which joins the assembly (P) to the floating tank (5), which is, in turn, joined by means of a lower structure (7) to the ballast tank (8), and whereby said ballast tank (8) is configured to control the assembly's centre of gravity and adjust the flotation line by the distribution of mass.

## Claims

### Claim 1

A floating platform for the extraction of wind energy, comprising a structure (S) which is the support for assembly (P) made up of a wind turbine tower (3), a nacelle (2) and its corresponding rotor blades (1) characterised in that the support structure (S) comprises an upper structure (4) which joins assembly (P) to the float tank (5), which, in turn, is joined by means of a lower structure (7) to the ballast tank (8), and whereby said ballast tank (8) and said lower structure (7) are configured to control the unit's centre of gravity and adjust the line of flotation by means of the distribution of mass.

### Claim 2 (depends on 1)

A floating platform in accordance with claim 1, whereby the float tank (5) comprises a cylinder (5a) joined to a tapered ferrule (5b) which joins it to the upper structure (4) and to another tapered ferrule (5c) which joins it to the lower structure (7).

### Claim 3 (depends on 1)

A floating platform in accordance with claim 1, whereby the lower structure (7) is made from steel plate and is tapered, with a greater diameter at its connection with the float tank (5) than at its connection with the ballast tank (8).

### Claim 4 (depends on 1)

A floating platform in accordance with claim 1 whereby the ballast tank (8) is hollow and can be filled and emptied in a controlled fashion in numerous watertight compartments.