公开(公告)号：US10480490B2

公开(公告)日：2019-11-19

申请号：US15536302

申请日：2015-12-18

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Anders Niels Hansen ,  Morten Bagger Søgaard ,  Claus Grøn Lyngby ,  Gert Lading

IPC: F03D80/30 ,  F03D1/06

Abstract: A lightning current transfer unit for a wind turbine, the wind turbine comprising a first part and a second part being rotatable relative to each other, wherein the lightning current transfer unit is arranged to provide electrical contact between the first and second parts, the lightning current transfer unit comprising: a first current transfer portion comprising a first slider and configured to be electrically coupled to a first electrically conducting slideway of the first part of the wind turbine, the first slider being rotatable relative to the first slideway; a second current transfer portion configured to be electrically coupled to an electrically conducting portion of the second part of the wind turbine; a first main spring biasing the first slider towards the first slideway; wherein the first slider comprises: a primary contact biased towards the first slideway by the first main spring; a secondary contact arranged to move relative to the primary contact; and a secondary spring arranged between the first main spring and the secondary contact such that the secondary spring biases the primary contact away from the first slideway and biases the secondary contact towards the first slideway.

公开(公告)号：US10151303B2

公开(公告)日：2018-12-11

申请号：US15429045

申请日：2017-02-09

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Claus Grøn Lyngby ,  Hans V. Erichsen

IPC: B64C11/06 ,  F03D11/00 ,  F03D80/30 ,  H01T4/08 ,  F03D1/06

Abstract: A lightning current transfer arrangement for a wind turbine enables lightning current and electrostatic discharge current to be discharged between first and second parts of the wind turbine that are rotatable relative to each other. The lightning current transfer arrangement comprises a current transfer unit electrically coupled to the first part, and an electrically conductive slideway electrically coupled to the second part and rotatable relative to the current transfer unit. The current transfer unit comprises a slider elastically biased towards the slideway, where the slider comprises a slide piece formed of a conductive plastic material, and a metal electrode rigidly coupled with the slide piece.