公开(公告)号：US10897137B2

公开(公告)日：2021-01-19

申请号：US16345467

申请日：2017-10-26

Applicant: MHI Vestas Offshore Wind A/S

Inventor： Tusitha Abeyasekera ,  Salvador Año-Villalba ,  Soledad Bernal Pérez ,  Ramon Blasco-Gimenez

IPC: H02J3/38 ,  F03D7/02 ,  H02J3/18 ,  H02J3/36 ,  F03D9/25

Abstract: Embodiments herein describe operating a first wind turbine using an auxiliary control system when a high-voltage link coupling a wind park to a grid is not functioning. When using the auxiliary control system, the first wind turbine provides power to a local AC grid which can be used to power auxiliary system in a second wind turbine while the second wind turbine is shutdown. However, when the high-voltage link is functional, the first and second wind turbines provide power to the high-voltage link using a primary control system.

公开(公告)号：US11028831B2

公开(公告)日：2021-06-08

申请号：US16345419

申请日：2017-10-26

Applicant: MHI Vestas Offshore Wind A/S

Inventor： Tusitha Abeyasekera ,  Salvador Año-Villalba ,  Soledad Bernal Pérez ,  Ramon Blasco-Gimenez

IPC: F03D9/25 ,  F03D7/04 ,  H02J3/38

Abstract: Embodiments herein describe operating a control system for a wind turbine in a first mode and second mode of operation. When in the first mode, the wind turbine provides power to a local AC grid. However, when in the second mode, the wind turbine provides power to a high-voltage direct current (HVDC) link. The control system includes a reactive power control leg and an active power control leg. To switch from the first mode to the second mode, the control system activates a PI controller coupled between the reactive and active power control legs which increases the output voltage of the wind turbine until the magnitude of the voltage activates a diode rectifier and permits the power outputted by the wind turbine to be transmitted along the HVDC link.