公开(公告)号：US11220998B2

公开(公告)日：2022-01-11

申请号：US16484568

申请日：2017-03-21

Applicant: MHI VESTAS OFFSHORE WIND A/S

Inventor： Hideyasu Fujioka ,  Masayuki Hiraishi

IPC: F03D3/06 ,  F03D9/25 ,  H02K7/18 ,  F01D5/28 ,  F03D1/06

Abstract: A wind turbine blade includes: a blade body portion; and an anti-erosion layer disposed so as to cover a surface of the blade body portion partially. A center point of the anti-erosion layer in a circumferential length direction along a blade profile in a cross section orthogonal to a blade spanwise direction is shifted toward a pressure side from a leading edge of the blade body portion, at least in a part of an extension range of the anti-erosion layer in the blade spanwise direction.

公开(公告)号：US10767629B2

公开(公告)日：2020-09-08

申请号：US15473749

申请日：2017-03-30

Applicant: MHI Vestas Offshore Wind A/S

Inventor： Hideyasu Fujioka

IPC: F03D80/30 ,  F03D7/02 ,  F03D7/04

Abstract: A wind turbine power generation facility includes: at least one wind turbine power generating apparatus; a lightning sensor for detecting or predicting occurrence of lightning in an installation area of the at least one wind turbine power generating apparatus; and a controller for switching an operation mode of the at least one wind turbine power generating apparatus to a lightning-protection mode in which a rotor rotation speed is lower than a rated rotation speed, on the basis of an output signal of the lightning sensor.

公开(公告)号：US11028829B2

公开(公告)日：2021-06-08

申请号：US16461574

申请日：2017-11-17

Applicant: MHI VESTAS OFFSHORE WIND A/S

Inventor： Hideyasu Fujioka

IPC: F03D7/02 ,  F03D17/00 ,  F03D1/00 ,  F03D7/04 ,  G01F22/00 ,  G01W1/14

Abstract: There is presented a method (320) for controlling a wind turbine (100), wherein said wind turbine comprises a wind turbine rotor (102) with one or more blades (103), wherein the wind turbine has a rated angular rotation speed (214) of the wind turbine rotor, said method comprising providing (322) an estimated drop size (324) of rain drops impinging on the one or more blades, determining (326) whether an entry criterion for operation according to a reduced mode is fulfilled, wherein said determining is based at least partially on the estimated drop size (324), controlling (328) the wind turbine according to the reduced mode if the entry criterion is fulfilled, wherein in the reduced mode an angular rotation speed of the wind turbine rotor is limited below an angular rotation speed threshold (216), wherein the angular rotation speed threshold is smaller than the rated angular rotation speed of the wind turbine.

公开(公告)号：US11028827B2

公开(公告)日：2021-06-08

申请号：US16461591

申请日：2017-11-17

Applicant: MHI VESTAS OFFSHORE WIND A/S

Inventor： Hideyasu Fujioka ,  Alex Pericleous

IPC: F03D7/02 ,  F03D17/00 ,  F03D7/04 ,  F03D1/00

Abstract: There is presented a method (320) for controlling a wind turbine (100), wherein said wind turbine comprises a wind turbine rotor (102) with one or more blades (103), wherein the wind turbine has a rated angular rotation speed (214) of the wind turbine rotor, said method comprising obtaining (322) information (323) on ambient conditions, determining, based on said information, if an erosion criterion is fulfilled, controlling (328) the wind turbine according to an extended mode if the erosion criterion is fulfilled, wherein in the extended mode an angular rotation speed of the wind turbine rotor is allowed to exceed the rated angular rotation speed (214).