公开(公告)号：US20210119562A1

公开(公告)日：2021-04-22

申请号：US17132724

申请日：2020-12-23

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Jesper HILLEBRANDT ,  Philip Carne Kjær

IPC: H02P13/06 ,  F03D9/25

Abstract: The invention relates to a method for controlling a wind turbine which comprises a transformer has a variable turns ratio such as an on load tap changer transformer. The adjustment of the turns ratio is possible when a primary side current or a secondary side current of the transformer is less than a switching current threshold. The method comprises operating the wind turbine so that the primary or secondary side current is above the switching current threshold. In response to obtaining a condition for changing the turns ratio of the transformer, the wind turbine is operated so that the primary or secondary side current is reduced below the switching current threshold so that the turns ratio can be changed during the temporary current reduction.

公开(公告)号：US10914288B2

公开(公告)日：2021-02-09

申请号：US16504090

申请日：2019-07-05

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Jesper Hillebrandt ,  Philip Carne Kjær

IPC: F03D7/04 ,  F03D7/02 ,  H02P9/00

Abstract: The invention relates to a method for controlling a wind turbine configured with an on load tap changer transformer which enables adjustment of a current ratio of a primary side current of the transformer and a secondary side current of the transformer. The method comprises detecting that a network voltage on the primary side or secondary side of the transformer is outside a pre-determined voltage range, and in response determining a current reference for the primary side current based on the detected network voltage. The power converter of the wind turbine is controlled to generate an increase of the primary side current towards the current reference, and the current ratio of the transformer is adjusted towards a higher ratio of the current ratio.

公开(公告)号：US10910975B2

公开(公告)日：2021-02-02

申请号：US16504077

申请日：2019-07-05

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Jesper Hillebrandt ,  Philip Carne Kjær

IPC: H02P13/06 ,  F03D9/25

Abstract: The invention relates to a method for controlling a wind turbine which comprises a transformer has a variable turns ratio such as an on load tap changer transformer. The adjustment of the turns ratio is possible when a primary side current or a secondary side current of the transformer is less than a switching current threshold. The method comprises operating the wind turbine so that the primary or secondary side current is above the switching current threshold. In response to obtaining a condition for changing the turns ratio of the transformer, the wind turbine is operated so that the primary or secondary side current is reduced below the switching current threshold so that the turns ratio can be changed during the temporary current reduction.

公开(公告)号：US20140086723A1

公开(公告)日：2014-03-27

申请号：US14008666

申请日：2012-03-28

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： John Bengtson ,  Victor Donescu ,  Philip Carne Kjær ,  Kenneth Skaug

IPC: F03D11/00

CPC classification number: F03D17/00 ,  F03D7/047 ,  F05B2260/845 ,  F05B2270/1074 ,  G05B9/03 ,  Y02E10/723

Abstract: The present invention relates to a fault-tolerant control system for a wind turbine comprising a plurality of controllable wind turbine components, the control system comprising control means for generating a replica of essentially concurrent set-point values, a data communication network for transmitting the replica of essentially concurrent set-point values to the plurality of wind turbine components, and a plurality of decentralised voting means being arranged so that a decentralised voting means is assigned to each wind turbine component, each decentralised voting means being adapted to select one set-point value out of the replica of set-point values. The present invention further relates to a wind turbine and to an associated method.

Abstract translation: 本发明涉及一种用于风力涡轮机的容错控制系统，包括多个可控制的风力涡轮机部件，所述控制系统包括用于产生基本上并发的设定点值的副本的控制装置，用于发送副本的数据通信网络 基本上并发的设定点值到多个风力涡轮机部件，并且布置多个分散投票装置，使得分散的投票装置被分配给每个风力涡轮机部件，每个分散投票装置适于选择一个设定点 从设定值的副本中取值。 本发明还涉及一种风力涡轮机及其相关方法。