US 12,313,039 B2
Wind turbine blade having a de-icing system
Lars Bo Hansen, Kolding (DK); Casper Kildegaard, Kolding (DK); and Mark Hancock, Eastleigh (GB)
Assigned to LM WIND POWER A/S, Kolding (DK)
Appl. No. 18/289,434
Filed by LM WIND POWER A/S, Kolding (DK)
PCT Filed Jun. 16, 2022, PCT No. PCT/EP2022/066486
§ 371(c)(1), (2) Date Nov. 3, 2023,
PCT Pub. No. WO2022/263596, PCT Pub. Date Dec. 22, 2022.
Claims priority of application No. PA202170304 (DK), filed on Jun. 16, 2021.
Prior Publication US 2024/0254972 A1, Aug. 1, 2024
Int. Cl. F03D 80/40 (2016.01)
CPC F03D 80/401 (2023.08) 20 Claims
OG exemplary drawing
 
1. A wind turbine blade comprising:
an aerodynamic shell body with a suction side shell part and a pressure side shell part that extends in a longitudinal direction between a root and a tip and in a transverse direction between a leading edge and a trailing edge, and
a de-icing system comprising:
a number of heating layers including a first heating layer, the number of heating layers each comprising electrically conductive fibres configured and arranged to extend in the longitudinal direction of the wind turbine blade along a longitudinal section of the aerodynamic shell body to provide resistive heating to the longitudinal section of the aerodynamic shell body;
a number of metallic patches including a first metallic patch, the number of metallic patches being arranged to contact at least the number of heating layers; and
a conductor cable that is electrically connected to the number of metallic patches and further is configured for electrically connecting to a power source,
wherein the electrically conductive fibres of the number of heating layers are configured for, upon receiving electrical power from the conductor cable via the number of metallic patches, supplying resistive heating to an outer side of the wind turbine blade so as to de-ice the wind turbine blade, and
wherein the number of heating layers includes a second heating layer, wherein the number of metallic patches is sandwiched between the respective first heating layer and the respective second heating layer.