公开(公告)号：WO2021083469A1

公开(公告)日：2021-05-06

申请号：PCT/DK2020/050295

申请日：2020-10-28

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： SØGAARD, Morten Bagger ,  DANIELSEN, Niels Erik ,  JONES, Alun

IPC: H02H9/04

Abstract: A wind turbine (1) comprising a generator (2), an auxiliary system (6) comprising one or more electrical components (7), and an auxiliary transformer (5) having an internal impedance is disclosed. The auxiliary transformer (5) is connected on a primary side to the generator (2) and to a power grid (3), and on a secondary side to the auxiliary system (6). The wind turbine (1) further comprises an overvoltage protection device (8), being electrically arranged on the secondary side of the auxiliary transformer (5), and being arranged to be triggered by a voltage exceeding an overvoltage threshold. The triggering of the overvoltage protection device (8), due to a voltage being above the overvoltage threshold, causes a current exceeding a nominal current through the auxiliary transformer (5) to flow into the overvoltage protection device (8), thus causing a secondary side voltage of the auxiliary transformer (5) to be limited due to the internal impedance of the auxiliary transformer (5).

公开(公告)号：EP3969744A1

公开(公告)日：2022-03-23

申请号：EP20727145.3

申请日：2020-05-15

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： SØGAARD, Morten Bagger ,  DANIELSEN, Niels Erik ,  JONES, Alun ,  JENSEN, Carsten Lindgaard

IPC: F03D7/02 ,  H02J9/06 ,  H02J1/10

公开(公告)号：EP3970259A1

公开(公告)日：2022-03-23

申请号：EP20727146.1

申请日：2020-05-15

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： SØGAARD, Morten Bagger ,  DANIELSEN, Niels Erik ,  JONES, Alun ,  JENSEN, Carsten Lindgaard

IPC: H02J9/06 ,  F03D7/02