Wind turbine and wind turbine foundation

Patent metadata

Field	Value
Publication number	US-2016169209-A1
Application number	US-201414900015-A
Country	US
Kind code	A1
Filing date	Jun 19, 2014
Priority date	Jun 21, 2013
Publication date	Jun 16, 2016
Grant date	—

Abstract

A wind energy plant is provided with a foundation base and a tower which is placed on the foundation base. The foundation base has a foundation plate below ground level and a foundation plinth on the foundation plate above ground level. On the foundation plinth a tension cord connector is provided with a plurality of bores for receiving tension cords. The tension cords are tensioned on an underneath side of the connector by means of a tension cord head. The foundation plate and the foundation plinth are cast in one piece from site-mixed concrete.

First claim

1 . A wind turbine comprising:
a foundation having a portion in a ground and a portion above a ground level, the foundation including a foundation plate and a foundation plinth that extends from the foundation plate and above the ground level, wherein the foundation plate and the foundation plinth are cast in a single piece of concrete; a tension cord connector provided on the foundation plinth, the tension cord connector including a plurality of bores for receiving tension cords, wherein the tension cords are tensioned at a lower surface of the tension and cord connector by a tension cord head; and a tower located on the foundation.

2 . The wind turbine according to claim 1 wherein an upper side of the concrete plate is spaced from a lower side of the tension cord connector or a position of the tension cord head by a distance.

3 . The wind turbine according to claim 2 wherein a height of the tension cord connector is the same as the distance between the upper side of the concrete plate and the lower side of the tension cord connector or the position of the tension cord head.

4 . A wind turbine foundation base, comprising:
a foundation plate located below ground level; and a foundation plinth that is integral with and extending from the foundation plate above ground level, wherein on the foundation plinth is a plurality of bores for receiving tension cords, wherein the tension cords are tensioned on a lower surface of the connector by a tension cord head.

5 . The wind turbine foundation base according to claim 4 wherein the foundation plate and the foundation plinth are formed from concrete.

6 . The wind turbine foundation base according to claim 4 wherein the lower surface of the connector is above and spaced apart from the foundation plate by a distance.

7 . The wind turbine foundation base according to claim 6 wherein tension cords are spaced from the foundation plate.

8 . The wind turbine foundation base according to claim 4 wherein the foundation plinth extends from a middle portion of the foundation plate.

Assignees

• Wobben Properties Gmbh

Inventors

• Coordes Thomas
• Pollman Frank
• Gröss Alexander

Classifications

• F03D13/22

  Foundations specially adapted for wind motors · CPC title

• E02D27/425 Primary

  specially adapted for wind motors masts (wind motors per se F03D1/00) · CPC title

• F03D13/20 Primary

  Arrangements for mounting or supporting wind motors; Masts or towers for wind motors · CPC title

• Y02E10/728

  Onshore wind turbines · CPC title

• E02D27/42

  Foundations for poles, masts or chimneys {(sockets or holders for poles or masts per se E04H12/22)} · CPC title