Electric cable for a wind turbine and wind turbine

Patent metadata

Field	Value
Publication number	US-11619212-B2
Application number	US-202016860106-A
Country	US
Kind code	B2
Filing date	Apr 28, 2020
Priority date	May 9, 2019
Publication date	Apr 4, 2023
Grant date	Apr 4, 2023

Abstract

Provided is an electric cable for a wind turbine, wherein the electric cable includes at least one cooling element) to cool the electric cable, wherein the cooling element protrudes from the surface of the electric cable.

First claim

The invention claimed is:

1. A wind turbine comprising:
a tower;
a nacelle located on a top of the tower, the nacelle including at least one opening on a top of the nacelle;
at least one electric cable disposed within the tower, the at least one electric cable comprising at least one cooling element to cool the electric cable, wherein the at least one cooling element protrudes from a surface of the electric cable; and
at least one cooling fan provided at the at least one opening on the top of the nacelle;
wherein:
the at least one cooling fan is configured to drive a circulation of air within the wind turbine to cool the at least one electric cable; or
the at least one cooling fan is configured to increase an airflow through the tower, wherein at least two openings enable air to enter and to leave an interior of the wind turbine tower, thereby cooling the at least one electric cable.

2. The wind turbine according to claim 1 , wherein the at least one cooling element is a fin.

3. The wind turbine according to claim 2 , further comprising several annular fins as cooling elements, extending, at least partially, along a circumference of the electric cable.

4. The wind turbine according to claim 3 , wherein a distance between two adjacent of the several annular fins is between 1 mm and 100 mm.

5. The wind turbine according to claim 1 , wherein the at least one cooling element is a helical, circumferential fin which extends along a periphery of the electric cable.

6. The wind turbine according to claim 1 , wherein the at least one cooling element is part of or attached to a metallic sheath of the electric cable.

7. The wind turbine according to claim 6 , wherein the metallic sheath is covered by an anti-corrosion sheath forming the surface of the electric cable.

8. The wind turbine according to claim 1 , wherein the at least one cooling element consists of metal.

Assignees

• Siemens Gamesa Renewable Energy As

Inventors

• Rafieearashtnab Mahsa

Classifications

• H02K7/1838

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

• H02G3/03

  Cooling · CPC title

• H01B7/184

  Sheaths comprising grooves, ribs or other projections · CPC title

• H01B7/426 Primary

  using cooling fins, ribs · CPC title

• F03D80/85 Primary

  Cabling · CPC title