Magnetic Cap Element for a Stator of a Generator

• US 20120112569A1
• Filed: 10/21/2011
• Published: 05/10/2012
• Est. Priority Date: 11/04/2010
• Status: Active Grant

• Current Assignee: Siemens Gamesa Renewable Energy A/S (Siemens AG)
• Original Assignee: Siemens AG
• Inventors: Le Besnerais, Jean, Stiesdal, Henrik
• Granted Patent: US 9,356,491 B2
• Time in Patent Office: Days
• US Class Current: 310/54
• CPC Class Codes: H02K 1/20 with channels or ducts for flow of cooling medium
• CPC Class Codes: H02K 5/20 with channels or ducts for flow of cooling medium
• CPC Class Codes: H02K 5/203 specially adapted for liquids, e.g. cooling jackets
• CPC Class Codes: H02K 7/1838 Generators mounted in a nacelle or similar structure of a horizontal axis wind turbine
• CPC Class Codes: Y02E 10/72 Wind turbines with rotation axis in wind direction
• CPC Class Codes: Y10T 29/49009 Dynamoelectric machine

Abstract

A stator system for a generator, in particular a generator of a wind turbine is disclosed. The stator system includes a housing element including a groove and a cap element for closing the groove such that a channel for guiding a cooling fluid within the groove is formed. The cap element includes a magnetic material.

Claims

1-11. -11. (canceled)

12. A stator system of a wind turbine generator, the stator system comprising:

a housing element comprising a groove, and

a cap element mounted to the housing element to close the groove such that a channel for guiding a cooling fluid within the groove is formed,

wherein the cap element comprises a magnetic material.

13. The stator system according to claim 12, further comprising

an insulation layer that is located between the cap element and an inner volume of the groove.

14. The stator system according to claim 12, further comprising

a resin layer that covers the housing element and the cap element.

15. The stator system according to claim 12, further comprising

wherein the housing element comprises a first three dimensional contour,

wherein the cap element comprises a second three dimensional contour, and

wherein the second three dimensional contour is complementary to the first three dimensional contour in such a way that the cap element is slidably connectable to the first three dimensional contour for fixing the cap element to the housing element.

16. The stator system according to claim 15,

wherein the first three dimensional contour of the housing element comprises a guiding notch, and

wherein the second three dimensional contour of the cap element comprises an edge section, and

wherein the guiding notch is formed in such a way that the edge section of the cap element is slidably insertable into the guiding notch for fixing the cap element to the housing element.

17. A stator system according to claim 16,

wherein the edge section of the cap element (103) comprises a wedge profile,

wherein the guiding notch comprises a V-shaped profile, and

wherein the V-shaped profile corresponds to the wedge profile of the edge section of the cap element.

18. The stator system according to claim 12,

wherein the groove is rectangular.

19. The stator system according to claim 12,

wherein the groove comprises a profile configured to a profile of a cooling pipe that is insertable into the groove.

20. A method for manufacturing a stator system for a wind turbine generator, the method comprising

forming a groove in a housing element of the stator system;

, and

mounting a cap element to the housing element for closing the groove such that a channel for guiding a cooling fluid within the groove is formed,

wherein the cap element comprises a magnetic material.

21. The method according to claim 20,

interposing an insulation layer between the cap element and an inner volume of the groove.

22. The method according to claim 20,

impregnating the housing element and the cap element via a resin impregnation process.