Lightning magnetic flux density reduction in wind turbines
AssigneeSiemens Gamesa Renewable Energy A/S
InventorsSajeesh Sulaiman, Aravind Devaraj
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Abstract
Provide is a nacelle for a wind turbine includes: an external surface exposed to a magnetic flux induced by lightning, an electrical generator rotating about a rotational axis, the electrical generator including a rotor, a stator, an airgap separating the rotor and the stator, and a plurality of electrical conductors wound in the rotor or the stator adjacently to the airgap, a lightning protection arrangement including at least one waveguide between the rotor and the stator and interposed between the external surface and the airgap for providing a shielding to the electrical conductors from the magnetic flux induced by lightning.
Claims16
A nacelle for a wind turbine comprising:
- a surface exposed to a magnetic flux induced by lightning;
- an electrical generator rotating about a rotational axis, the electrical generator comprising a rotor, a stator, an airgap separating the rotor and the stator, and a plurality of electrical conductors wound in the rotor or the stator adjacently to the airgap;
- and
- a lightning protection arrangement including at least one waveguide between the rotor and the stator and interposed between the surface and the electrical conductors for providing a shielding to the electrical conductors from the magnetic flux induced by lightning, wherein the at least one waveguide extends between a first plate connected to the stator and a second plate connected to the rotor that faces the first plate, wherein a distance between the first plate and the second plate defines a width of the at least one waveguide.
Dependencies are inferred from the claim text.