Stator support for a stator of a wind turbine generator, stator,generator, and wind turbine comprising the stator support

Patent metadata

Field	Value
Publication number	US-10819170-B2
Application number	US-201716471346-A
Country	US
Kind code	B2
Filing date	Dec 21, 2017
Priority date	Dec 21, 2016
Publication date	Oct 27, 2020
Grant date	Oct 27, 2020

Abstract

A stator carrier for a stator of a wind turbine generator, in particular a multi-pole slowly rotating synchronous ring generator. It is proposed that the stator comprises a first carrier plate, a second carrier plate, a cavity which is provided between the two carrier plates and is open radially outwardly, a separating plate which is arranged between the two carrier plates and which subdivides the cavity into a first cavity portion and a second cavity portion, wherein there is provided a number of first flow passages extending from the first carrier plate directly into the second cavity portion and a number of second flow passages extending from the second carrier plate directly into the first cavity portion. There is further proposed a stator having such a stator carrier as well as a generator and a wind turbine having same.

First claim

The invention claimed is:

1. A stator carrier for a stator of a wind turbine generator, the stator carrier comprising:
a first carrier plate;
a second carrier plate;
a cavity between the first and second carrier plates, wherein the cavity opens outwardly in a radial direction;
a separating plate arranged between the first and second carrier plates and subdivides the cavity into a first cavity portion and a second cavity portion;
a plurality of first flow passages extending from the first carrier plate directly into the second cavity portion; and
a plurality of second flow passages extending from the second carrier plate directly into the first cavity portion.

2. The stator carrier according to claim 1 wherein the plurality of first flow passages and the plurality of second flow passages are each distributed uniformly over a periphery of the first and second carrier plates, respectively.

3. The stator carrier ( 1 ) according to claim 1 wherein the plurality of first flow passages are arranged in displaced relationship relative to the plurality of second flow passages in a peripheral direction of the first and second carrier plates.

4. The stator carrier ( 1 ) according to claim 1 wherein the plurality of first flow passages and the plurality of second flow passages are arranged on a same pitch circle diameter.

5. The stator carrier according to claim 1 wherein the plurality of first flow passages and the plurality of second flow passages each have a same opening cross-section.

6. The stator carrier according to claim 1 wherein the plurality of first flow passages and the second flow passages are oriented parallel to a longitudinal axis of the stator carrier.

7. The stator carrier according to claim 1 wherein the separating plate is coupled to the first and second carrier plates by a plurality of support struts.

8. A stator for a generator of a wind turbine, the stator comprising:
a laminated stator core for receiving a stator winding; and
the stator carrier according to claim 1 , wherein the laminated stator core is fixed to the stator carrier,
wherein the laminated stator core defines a first radial region for receiving the stator winding and a second radial region, the second radial region being adjacent to the first radial region, the second radial region having a plurality of ventilation grooves that lead to a first end of the stator and to an opposite second end of the stator, and
wherein the plurality of ventilation grooves are connected in fluidic relationship in a region of the stator carrier to the cavity of the stator carrier.

9. The stator according to claim 8 wherein the plurality of ventilation grooves are interrupted by a separating wall arranged between the first and second carrier plates of the stator carrier in an axial direction.

10. The stator according to claim 9 wherein the separating wall and the separating plate are arranged in a same plane.

11. The stator according to claim 10 wherein the separating wall is integrally formed with the separating plate.

12. A generator of a wind turbine, the generator comprising;
a generator rotor;
a stator, wherein the generator rotor is arranged to rotate relative to the stator; and
a stator carrier according to claim 1 , wherein the stator is fixed to the stator carrier.

13. The generator according to claim 12 comprising a plurality of fans for generating an air flow through an interior of the generator.

14. The generator according to claim 13 wherein the plurality of fans is adapted to suck in air from the interior of the generator.

15. The generator according to claim 13 wherein:
the generator has a first side facing a rotor hub and an opposite second side facing away from the rotor hub, and
the plurality of fans is arranged on the second side of the generator.

16. A wind turbine comprising the generator according to claim 12 .

17. The generator according to claim 12 wherein the generator rotor is an external rotor.

18. The generator according to claim 12 wherein the generator is a multi-pole slowly rotating synchronous ring generator.

19. The stator carrier according to claim 1 wherein the wind turbine generator is a multi-pole slowly rotating synchronous ring generator.

Assignees

• Wobben Properties Gmbh

Inventors

• Messner Birte
• Röer Jochen
• Ziems Jan Carsten

Classifications

• F03D80/601

  using ambient airflow; Convective cooling of components · CPC title

• H02K7/1838

  Generators mounted in a nacelle or similar structure of a horizontal axis wind turbine · CPC title

• H02K1/20 Primary

  with channels or ducts for flow of cooling medium · CPC title

• H02K9/04 Primary

  having means for generating a flow of cooling medium · CPC title

• F03D9/25 Primary

  the apparatus being an electrical generator (F03D9/22 takes precedence) · CPC title