Wind turbine nacelle

Patent metadata

Field	Value
Publication number	US-9394887-B2
Application number	US-201214367174-A
Country	US
Kind code	B2
Filing date	Dec 17, 2012
Priority date	Dec 21, 2011
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

The invention relates to nacelle of a wind turbine. According to the invention, the wind turbine has a tower or mast, an aerodynamic rotor, and a generator having an electric-machine rotor and a stator, and the nacelle is provided with a nacelle covering, wherein the nacelle, in particular the nacelle covering, is self-supporting.

First claim

The invention claimed is:

1. A pod of a wind power installation, the wind power installation including a pylon or mast, an aerodynamic rotor, and a generator with a generator rotor member and a stator, the pod comprising:
a pod casing that includes a rotating part and a stationary part, the stator being coupled to the stationary part and the rotating part being coupled to the generator rotor member, the pod casing being an outer shell that is self-supporting, wherein the wind power installation is gearless such that the generator rotor member is rotated without mechanical transmission by the aerodynamic rotor.

2. The pod according to claim 1 wherein the pod casing fully supports the generator.

3. The pod according to claim 1 wherein the pod casing is coupled to the pylon without a machine carrier there between.

4. The pod according to claim 1 wherein the rotating part supports at least one rotor blade of the aerodynamic rotor and the generator rotor member of the generator, wherein the stationary part supports the stator of the generator; wherein the rotating part and the stationary part are made entirely or partially from steel or aluminum.

5. The pod according to claim 1 wherein the generator rotor member is located outwardly of the stator.

6. The pod according to claim 1 further comprising a ring gear fixedly connected to the pod and having an internal tooth arrangement for azimuth adjustment of the pod, the ring gear adapted so that at least one azimuth drive is fixedly arranged in the pylon and engage with a respective pinion on the ring gear with the internal tooth arrangement.

7. The pod according to claim 1 further comprising a working platform extending through an interior portion of the generator.

8. The pod according to claim 1 wherein the generator has a nominal power output of over 1MW.

9. The pod according to claim 1 wherein the pod is sized to allow a person to stand within the pod casing.

10. The pod according to claim 1 wherein the generator rotor member has a nominal rotating speed of 5 to 25 revolutions per minute, wherein the stator has at least 48 stator poles.

11. The pod according to claim 1 wherein the pod casing has
a shaft journal portion arranged in a region of the generator and the aerodynamic rotor for carrying the generator and the aerodynamic rotor, and
a connecting portion connecting the shaft journal portion to the pylon, the connecting portion having an outer shape that is angled or curved from the pylon to the shaft journal portion.

12. The pod according to claim 1 wherein the rotating part of the pod casing has blade connections for fixing a respective rotor blade to the rotating part, the blade connections extending in an axial direction over a blade connecting region.

13. A wind power installation comprising:
a pylon or mast:
a generator that includes a stator and a rotor member; and
a pod having an outer pod casing that includes a rotating part and a stationary part, the generator coupling the rotating part of the pod casing to the stationary part of the pod casing, the stationary part of the casing having a smaller diameter than the rotating part, the pod casing being an outer shell that is self-supporting without internal support structures extending through an interior portion for supporting the pod casing.

14. The wind power installation according to claim 13
wherein at least one azimuth drive is fixedly arranged in the pylon or mast and engage with a respective pinion on a ring gear which is fixedly connected to the pod and has an internal tooth arrangement.

15. A method of constructing a wind power installation, the method comprising:
coupling a stationary part of a pod to a pylon;
forming a generator by coupling a generator rotor member to a stator with a bearing, wherein the generator rotor member is coupled outwardly of the stator;
coupling the generator to the stationary part of the pod; and
coupling a rotary part of the pod to the generator.

16. The method according to claim 15 wherein the stator, generator rotor member and the bearing coupling the stator and the rotor member are prefabricated at a factory or on a building site on a ground.

17. The method according to claim 15 further comprising installing electric devices in the rotating part of the pod prior to coupling the pod to the generator.

18. The wind power installation according to claim 13 , wherein the generator couples the rotating part of the pod casing to the stationary part.

Assignees

• Wobben Properties Gmbh

Inventors

• Roer Jochen
• Sartorius Florian

Classifications

• F03D13/10

  Assembly of wind motors; Arrangements for erecting wind motors · CPC title

• F03D15/20

  Gearless transmission, i.e. direct-drive · CPC title

• F03D80/50

  Maintenance or repair · CPC title

• Y02E10/728

  Onshore wind turbines · CPC title

• F03D80/70

  Bearing or lubricating arrangements · CPC title