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.