Siemens Gamesa Renewable Energy A/s

Aravind Devaraj

Sajeesh Sulaiman

Haritha Subramanian Kalyanaraman

Rajanikanth Reddy Dasari

Ramakrishnan Manickam

A connector arrangement for a wind turbine down conductor is provided, including a lightning conductor cable, a first connection element, a second connection element and a tube, wherein a first end of the cable is connected to the first connection element and a second end of the cable is connected to the second connection element, wherein the tube surrounds at least a portion of the cable between the first end and the second end of the cable, wherein the tube is fixedly attached to the first connection element and relatively movable to the second connection element.

Connector arrangement for a wind turbine down conductor, and wind turbine

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.

Lightning magnetic flux density reduction in wind turbines

Provided is a rotor for a wind turbine, including: a blade, a hub, a pitch bearing being configured to support the blade rotatably about a longitudinal axis of the blade and relative to the hub, and one or more metal arcs for conducting a lightning current from the blade to the hub, the one or more metal arcs including: a first arc portion electrically and mechanically connected to the blade, a second arc portion electrically and mechanically connected to the hub, and a bent portion connecting the first and second arc portions. The metal arcs being configured such that, when the blade rotates relative to the hub, the first arc portion is shifted relative to the second arc portion and a length of the first arc portion is reduced or increased at the expense of an increase or decrease of a length of the second arc portion.

Growing community of inventors

Kerala, India

Aravind Devaraj