公开(公告)号：US20230133674A1

公开(公告)日：2023-05-04

申请号：US17794226

申请日：2021-01-19

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Bo SUN ,  Ciprian BIRIS ,  Catalin Gabriel DINCAN ,  Philip Carne KJÆR

IPC: H02J3/38 ,  H01F29/04 ,  H02J3/00 ,  H02M1/00

Abstract: A method of operating a power generating system for a wind turbine connected to an electrical grid, the power generating system comprising a power generator, a converter, a transformer and a tap changer, the method comprising; when operating the power generating system in a grid-forming configuration, monitoring a signal for detecting a voltage of the electrical grid which requires an increase in output voltage from the power generating system in order to maintain the grid voltage within a predetermined voltage range; and operating the tap changer to tap-up the transformer to provide at least part of the voltage increase required to maintain the grid voltage within the predetermined voltage range.

公开(公告)号：US20230048911A1

公开(公告)日：2023-02-16

申请号：US17794203

申请日：2021-01-19

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Ciprian BIRIS ,  Bo SUN

IPC: H02J3/38 ,  H02J3/18 ,  H02J3/00

Abstract: A method of operating a power generating system for a wind turbine connected to an electrical grid, the power generating system comprising a power generator, a converter, a transformer and a tap changer, the method comprising; monitoring a signal for detecting an over-voltage condition in the electrical grid which requires a reduction in the output voltage from the power generating system; initiating a convertor response mode configured to provide at least part of the required voltage reduction; and initiating a transformer response mode configured to provide at least part of the required voltage reduction; wherein the transformer response mode comprises operating the tap changer to adjust the output voltage from the power generating system.

公开(公告)号：US20210226452A1

公开(公告)日：2021-07-22

申请号：US17155017

申请日：2021-01-21

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Ciprian BIRIS ,  Bo SUN ,  Philip Came KJÆR

IPC: H02J3/38 ,  H02J3/18 ,  F03D9/25

Abstract: A method of operating a power generating system for a wind turbine connected to an electrical grid, the power generating system comprising a power generator, a converter, a transformer and a tap changer, the method comprising; monitoring a signal for detecting a voltage in the electrical grid which requires an increase in output voltage from the power generating system; determining a partial-load condition of the converter, which corresponds to the converter being configured to output a voltage which is substantially below its maximum output voltage; and upon determining the partial-load condition, operating the tap changer to tap down the transformer, and operating the converter to provide the required increase in output voltage from the power generating system.