公开(公告)号：US10044221B2

公开(公告)日：2018-08-07

申请号：US15105463

申请日：2014-11-28

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Paw Rosenvard ,  Lars Ulrich Nielsen ,  Sander J. Larsen

IPC: H02J11/00 ,  H02J9/00 ,  H02J3/38 ,  F03D9/25 ,  F03D7/02

Abstract: Auxiliary power is required by each generator to orient the rotor blades to face the wind direction and also for other control and safety functions. This auxiliary power is normally extracted from the power generated within each wind turbine generator. During servicing, auxiliary power is supplied from neighbouring generators using dedicated low-voltage cables. In the event of a fault in the high-voltage cable, connecting one of the groups of generators to the sub-station, these low-voltage cables are used to supply the generators within this group with auxiliary power from the output of one or more of the generators, in the other group of generators.