# US 10,309,375 B2 · Wind turbine

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- Number: US 10,309,375 B2
- Document ID: US10309375B2
- Status: Granted
- Kind: B2
- Application number: 14/441,813
- Filed: 2013-10-16
- Published: 2015-10-29
- Granted: 2019-06-04
- Earliest claimed: 2012-11-09
- Assignees: Wobben Properties GmbH
- Applicants: Wobben Properties GMBH
- Inventors: Jochen Röer; Alexander Hoffmann
- Web page: https://patentgrep.com/patent/US10309375B2

## CPC

- F03D 80/88: {of mechanical components}
- F03D 1/00: Wind motors with rotation axis substantially parallel to the air flow entering the rotor (controlling thereof F03D7/02)
- F03D 7/0204: {for orientation in relation to wind direction}
- F03D 9/25: the apparatus being an electrical generator (F03D9/22 takes precedence)
- F03D 13/20: Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D 80/00: Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D 80/70: Bearing or lubricating arrangements
- F03D 80/82: {of electrical components}
- F16C 35/06: Mounting {or dismounting} of ball or roller bearings; Fixing them onto shaft or in housing
- F05B 2240/912: on a tower
- F05B 2260/64: Aeration, ventilation, dehumidification or moisture removal of closed spaces
- F16C 2360/31: Wind motors
- Y02E 10/72: Wind turbines with rotation axis in wind direction
- Y02E 10/728: Onshore wind turbines
- F03D: WIND MOTORS
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- 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

The invention relates to a wind energy plant with a nacelle, a generator located in the nacelle, a tower and a yaw bearing to adjust the nacelle orientation into the wind, such that the yaw bearing is located under the nacelle in a vertical yaw displacement and the nacelle is supported on the yaw bearing above a vertical shaft section of the same length as the yaw displacement.

## Claims

### Claim 1

A method comprising:
determining an anticipated pitching moment of a wind energy plant to be formed, wherein the wind energy plant to be formed comprises a nacelle, a generator located in the nacelle, a tower, a single yaw bearing on top of the tower, and a vertical shaft section supporting the nacelle;
determining an anticipated, height-dependent thrust moment of the wind energy plant to be formed for nominal operation of the wind energy plant;
determining a height position in which a total of the anticipated pitching moment and the anticipated, height-dependent thrust moment is at a minimum;
identifying the height position as a position of the single yaw bearing of the wind energy plant to be formed; and
forming the tower of the wind energy plant and installing the single yaw bearing at the height position, wherein a vertical shaft section extends above the yaw bearing.

### Claim 2 (depends on 1)

The method according to claim 1, further comprising installing the nacelle onto an upper end of the vertical shaft section.

### Claim 3 (depends on 1)

The method according to claim 1, wherein determining the anticipated pitching moment includes determining the anticipated pitching moment based on a weight of the nacelle and a center of gravity of the nacelle.

### Claim 4 (depends on 1)

The method according to claim 1, wherein determining the anticipated, height-dependent thrust moment of the wind energy plant to be formed for nominal operation of the wind energy plant includes using a nominal wind at a site at which the tower is formed to determine the anticipated, height-dependent thrust moment of the wind energy plant.