Patent ID: 11933275
Assignee: VESTAS WIND SYSTEMS A/S
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 15:
16. A wind turbine, comprising:
a tower;
a nacelle disposed on the tower;
a generator disposed in the nacelle;
a rotor coupled to the generator and having a hub at a distal end;
a plurality of blades disposed on the hub of the rotor; wherein at least one blade of the plurality of blades comprises an electro-thermal heating element, the electro-thermal heating element comprising:
electrically resistive sheet material;
a first electrode which is in electrical contact with the sheet material and positioned at a first end of the element;
a second electrode which is in electrical contact with the sheet material and positioned at a second end of the sheet material; and
an electrically conductive strip which extends across a width of the element; wherein:
the sheet material has a first part on a first side of the strip and a second part on a second side of the strip,
the strip is in electrical contact with the first and second parts of the sheet material,
the first part of the sheet material has a first width, and the second part of the sheet material has a second width which is different to the first width, and
wherein the first electrode, the second electrode, and the strip extend parallel to one another and a chord of the at least one blade.