公开(公告)号：US10544777B2

公开(公告)日：2020-01-28

申请号：US16008081

申请日：2018-06-14

Applicant: MHI VESTAS OFFSHORE WIND A/S

Inventor： Tsuyoshi Wakasa ,  Satoshi Iwasaki ,  Yukio Yamashita ,  Yoshiyuki Hayashi

IPC: F03D7/02 ,  F03D7/04 ,  B63B35/44

Abstract: A method of controlling a floating-body wind turbine power generating apparatus including a wind turbine generator disposed on a floating body includes a pitch-angle increasing step of increasing a pitch angle of a blade of the wind turbine generator when the wind turbine generator is stopped, so that an aerodynamic braking force is applied to a rotor of the wind turbine generator. In the pitch-angle increasing step, a first change rate of the pitch angle of the blade in a first period during which the wind turbine generator is in an inclining motion toward an upwind side from a vertical direction due to sway of the floating body, is smaller than a second change rate of the pitch angle of the blade in a second period during which the wind turbine generator is in an inclining motion toward a downwind side from the vertical direction due to the sway of the floating body.

公开(公告)号：US10024303B2

公开(公告)日：2018-07-17

申请号：US14655335

申请日：2012-12-27

Applicant: MHI VESTAS OFFSHORE WIND A/S

Inventor： Tsuyoshi Wakasa ,  Satoshi Iwasaki ,  Yukio Yamashita ,  Yoshiyuki Hayashi

IPC: F03D7/02 ,  F03D7/04 ,  B63B35/44

Abstract: A method of controlling a floating-body wind turbine power generating apparatus including a wind turbine generator disposed on a floating body includes a pitch-angle increasing step of increasing a pitch angle of a blade of the wind turbine generator when the wind turbine generator is stopped, so that an aerodynamic braking force is applied to a rotor of the wind turbine generator. In the pitch-angle increasing step, a first change rate of the pitch angle of the blade in a first period during which the wind turbine generator is in an inclining motion toward an upwind side from a vertical direction due to sway of the floating body, is smaller than a second change rate of the pitch angle of the blade in a second period during which the wind turbine generator is in an inclining motion toward a downwind side from the vertical direction due to the sway of the floating body.