公开(公告)号：WO2017101951A1

公开(公告)日：2017-06-22

申请号：PCT/DK2016/050437

申请日：2016-12-16

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： GUPTA, Anurag ,  MIRANDA, Erik Carl Lehnskov ,  HILLEBRANDT, Jesper ,  KJÆR, Philip Carne ,  BAUN, Torben Ladegaard

IPC: F03D1/02 ,  F03D9/25 ,  F03D80/80

CPC classification number: F03D1/02 ,  F03D9/255 ,  F03D9/257 ,  F03D80/82 ,  Y02E10/72

Abstract: Aspects of the present disclosure are generally directed to a multi-rotor turbine having with a common line-side converter (LSC) (DC to AC converter) for each of a plurality of machine-side converters (AC to DC converters). For example, the multi- rotor turbine may include a plurality of machine-side converters (MSC), each configured to receive an alternating current (AC) input signal from one of a plurality of rotors of the multi-rotor turbine and generate a DC signal based on the input AC signal. The multi-rotor turbine may also include a line-side converter (LSC) configured to receive the DC signals from each of the plurality of MSCs and generate an output AC signal based on the DC signals.

Abstract translation: 本公开的方面通常涉及一种多转子涡轮机，其具有用于多个机器侧转换器中的每一个的公共线路侧转换器（LSC）（DC至AC转换器）（ AC到DC转换器）。 例如，多旋翼涡轮机可以包括多个机器侧变流器（MSC），每个机器侧变流器被配置为接收来自多旋翼涡轮机的多个转子中的一个的交流（AC）输入信号并且产生DC 信号基于输入的交流信号。 多旋翼涡轮机还可以包括线路侧变流器（LSC），其被配置为从多个MSC中的每一个接收DC信号并且基于DC信号生成输出AC信号。

公开(公告)号：WO2020098889A1

公开(公告)日：2020-05-22

申请号：PCT/DK2019/050337

申请日：2019-11-06

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： HILLEBRANDT, Jesper

IPC: H01F27/12 ,  H01F27/14 ,  F03D80/80

Abstract: Wind turbine installation (1) comprising a tower (2), a nacelle (3), - a liquid immersed power electrical device (6) having an expansion vessel (7), an air dehydrating breather (8) comprising a moisture absorbing agent (9), and a conduit (10) fluidly connecting the expansion vessel (7) and the air dehydrating breather (8), wherein the wind turbine installation (1) comprises a barrier (11) separating a restricted zone (12) from a non-restricted zone (13) in said wind turbine installation (1), wherein the electrical device (6) is located in the restricted zone (12), wherein the air dehydrating breather (8) is located in the non-restricted zone (12) and wherein the conduit (10) extends through the barrier (11) and a method of maintaining a wind turbine installation (1).

公开(公告)号：EP3881342A1

公开(公告)日：2021-09-22

申请号：EP19802065.3

申请日：2019-11-06

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： HILLEBRANDT, Jesper

IPC: H01F27/12 ,  H01F27/14 ,  F03D80/80

公开(公告)号：EP2771894B1

公开(公告)日：2016-03-09

申请号：EP12784430.6

申请日：2012-10-26

Applicant: Vestas Wind Systems A/S

Inventor： HILLEBRANDT, Jesper ,  SCHALOW, Frank

IPC: H01F27/40

CPC classification number: H01F27/125 ,  H01F27/40 ,  H02K7/183

Abstract: A transformer assembly for a wind turbine is described. The transformer assembly includes a liquid-filled main transformer and an auxiliary transformer connected on the high-voltage side of the main transformer. The auxiliary transformer benefits from improved power quality in this configuration.

公开(公告)号：EP3591821A1

公开(公告)日：2020-01-08

申请号：EP19184064.4

申请日：2019-07-03

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： HILLEBRANDT, Jesper ,  KJÆR, Philip Carne

IPC: H02M1/32 ,  H02J3/38 ,  H01F29/02 ,  H01F29/04 ,  H01H9/00 ,  H02M1/00

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：EP3591785A1

公开(公告)日：2020-01-08

申请号：EP19184072.7

申请日：2019-07-03

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： KJÆR, Philip Carne ,  HILLEBRANDT, Jesper

IPC: H02J3/12 ,  H02J3/18 ,  H02J3/38 ,  H02J3/50

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：EP2771894A1

公开(公告)日：2014-09-03

申请号：EP12784430.6

申请日：2012-10-26

Applicant: Vestas Wind Systems A/S

Inventor： HILLEBRANDT, Jesper ,  SCHALOW, Frank

IPC: H01F27/40

CPC classification number: H01F27/125 ,  H01F27/40 ,  H02K7/183

Abstract: A transformer assembly for a wind turbine is described. The transformer assembly includes a liquid-filled main transformer and an auxiliary transformer connected on the high-voltage side of the main transformer. The auxiliary transformer benefits from improved power quality in this configuration.