公开(公告)号：US20210151975A1

公开(公告)日：2021-05-20

申请号：US16627457

申请日：2018-06-15

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Arran WOOD ,  Stephen BUGGY ,  John BENGTSON

IPC: H02H3/08 ,  G01R31/327 ,  F03D17/00 ,  F03D80/40 ,  F03D7/02 ,  H02H3/04

Abstract: The present invention relates to a method of identifying an electrical contact fault in a wind turbine blade electrical heating system, comprising inserting a predetermined enforced off cycle between or within a switching duty cycle, wherein the switching duty cycle controls the switching of one or more electrical contacts in the electrical heating system, measuring a current consumption during the predetermined enforced off cycle, determining if the measured current consumption exceeds a predetermined threshold, and wherein if the measured current consumption exceeds the predetermined threshold shutting down at least part of the electrical heating system. The present invention also relates to a wind turbine with one or more wind turbine blades that can identify an electrical contact fault.

公开(公告)号：US20190331094A1

公开(公告)日：2019-10-31

申请号：US16472969

申请日：2017-12-12

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Lars Rohrmann ANDERSEN ,  John BENGTSON ,  Karl Axel PETURSSON

IPC: F03D17/00

Abstract: A method of measuring electrical characteristics of a transducer in a wind turbine generator control system is described. The method comprises measuring one or more electrical characteristics of a transducer of the control system, and comparing the measured electrical characteristics to one or more reference electrical characteristics, the reference electrical characteristics being one of (a) previously measured electrical characteristics of that transducer, (b) reference electrical characteristics stored in a database, and (c) previously measured electrical characteristics of an identical or similar transducer in another wind turbine generator.

公开(公告)号：US20190072071A1

公开(公告)日：2019-03-07

申请号：US16077685

申请日：2017-02-08

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Keld HAMMERUM ,  John BENGTSON

IPC: F03D7/02 ,  F03D7/04

Abstract: The present invention relates to control of a wind turbine, and in particular it relates to a distributed control system including a blade controller for each blade of the wind turbine. The electrical connection between each blade controller and the power supply of the blade controller is arranged to be functionally isolated from the electrical connection of each other blade controller and the power supply of the respective blade controllers.