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    11.
    发明专利
    未知

    公开(公告)号：IT1163196B

    公开(公告)日：1987-04-08

    申请号：IT2036783

    申请日：1983-03-30

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： KOS JOSEPH MICHAEL ,  PATRICK JOHN PETER ,  HARNER KERMIT IVAN

    IPC: F03D7/04 ,  F03D7/02 ,  F03D13/20 ,  F03D

    Abstract: Damping of the primary bending mode of a tower (12) mounting a wind turbine having a control (36) for providing a pitch blade angle reference signal (40) to modulate the pitch of the turbine blades (1) through a pitch change mechanism (38) for constant power is provided by generating the pitch blade angle reference signal as the integral (104) of the summation (266) of a torque/power controlling blade pitch angle reference rate signal (98) with an estimated acceleration signal (255) generated by filtering (250, 252, 254) the blade pitch angle reference signal (40) with the following transfer function

    12.
    发明专利
    未知

    公开(公告)号：DK547786D0

    公开(公告)日：1986-11-17

    申请号：DK547786

    申请日：1986-11-17

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： DIVALENTIN EUGENE D ,  DOMAN GLIDDEN SWEET ,  HARNER KERMIT IVAN ,  HEALY HENRY STEPHEN ,  KOS JOSEPH MICHAEL

    IPC: F03D7/04 ,  F03D7/02 ,  F03D9/00 ,  H02P9/42 ,  H02P ,  F03D

    Abstract: A variable speed wind turbine includes a frequency converter which converts variable frequency AC from a turbine driven AC generator to fixed frequency AC for delivery to a power grid. The frequency converter is typically an electronic cycloconverter or rectifier-inverter and is also used to control the power flow from the AC generator to the grid which thereby controls the air gap torque between the generator stator and rotor. The turbine speed is maneuvered to increase efficiency by precisely controlling the air gap torque according to a schedule defining sensed generator speed versus sensed generated power.

    15.
    发明专利
    未知

    公开(公告)号：NO832216L

    公开(公告)日：1983-12-23

    申请号：NO832216

    申请日：1983-06-20

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： HARNER KERMIT IVAN ,  PATRICK JOHN PETER ,  VOSSELER KENNETH FRANKLYN

    IPC: F03D7/02 ,  F03D7/04 ,  F03D

    Abstract: A blade feathering system for wind turbines includes a feather actuator (299), control means (330 and 335) operatively connected thereto and an adjustment means (340) operatively connected to the control means for selectively varying the rate of operation of the feather actuator for feathering the wind turbine blades (10 and 15) at a variable rate.

    PREDICTED MOTION WIND TURBINE TOWER DAMPING
    16.
    发明专利
    PREDICTED MOTION WIND TURBINE TOWER DAMPING 未知

    公开(公告)号：ZA831632B

    公开(公告)日：1983-11-30

    申请号：ZA831632

    申请日：1983-03-09

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： KOS JOSEPH MICHAEL ,  PATRIC JOHN PETER ,  HARNER KERMIT IVAN

    IPC: F03D7/04 ,  F03D7/02 ,  F03D13/20 ,  F03B ,  F03D ,  G01P ,  H02K

    Abstract: Damping of the primary bending mode of a tower (12) mounting a wind turbine having a control (36) for providing a pitch blade angle reference signal (40) to modulate the pitch of the turbine blades (1) through a pitch change mechanism (38) for constant power is provided by generating the pitch blade angle reference signal as the integral (104) of the summation (266) of a torque/power controlling blade pitch angle reference rate signal (98) with an estimated acceleration signal (255) generated by filtering (250, 252, 254) the blade pitch angle reference signal (40) with the following transfer function

    17.
    发明专利
    未知

    公开(公告)号：FI834074A0

    公开(公告)日：1983-11-07

    申请号：FI834074

    申请日：1983-11-07

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： HARNER KERMIT IVAN ,  NIESSEN FRANK RICHARD ,  SHERMAN ROBERT

    IPC: F03D7/04 ,  F03D7/02 ,  F03D

    Abstract: A blade pitch angle control system for a wind turbine includes an improved control means (95) for providing a minimum pitch angle reference signal indicative of desired blade pitch at wind velocities less than rated. The control means includes means (35 and 30) for providing signals indicative of generated (output power or torque and the rotational frequency of the wind turbine rotor. The output and rotor speed signals are input to a function generator which, in rsponse to such signals, provides a signal indicative of the minimum pitch angle.

    18.
    发明专利
    未知

    公开(公告)号：DE3308566A1

    公开(公告)日：1983-10-13

    申请号：DE3308566

    申请日：1983-03-10

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： KOS JOSEPH MICHAEL ,  PATRICK JOHN PETER ,  HARNER KERMIT IVAN

    IPC: F03D7/04 ,  F03D7/02 ,  F03D13/20

    Abstract: An accelerometer (1) disposed on the support tower (12) of a wind turbine electric generating system in the vicinity of the rotor (10, 16) thereof provides a signal (1) indicative of acceleration of the tower in the direction of the rotor rotational axis. The signal (2) is passed through a band-pass filter (4) for summation (9) with a torque/power controlled (100) blade pitch angle reference rate signal (98), the integral (104) of which provides a blade pitch angle reference signal (40) to control the pitch angle of the rotor blades (10) through a pitch change mechanism (38), thereby to provide additional, positive aerodynamic damping to the tower while modulating blade angle for constant torque/power in response to wind turbulence.

    20.
    发明专利
    未知

    公开(公告)号：DK136683D0

    公开(公告)日：1983-03-25

    申请号：DK136683

    申请日：1983-03-25

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： HARNER KERMIT IVAN ,  KOS JOSEPH MICHAEL ,  PATRICK JOHN PETER

    IPC: F03D7/04 ,  F03D7/02 ,  F03D13/20 ,  F03D

    Abstract: Damping of the primary bending mode of a tower (12) mounting a wind turbine having a control (36) for providing a pitch blade angle reference signal (40) to modulate the pitch of the turbine blades (1) through a pitch change mechanism (38) for constant power is provided by generating the pitch blade angle reference signal as the integral (104) of the summation (266) of a torque/power controlling blade pitch angle reference rate signal (98) with an estimated acceleration signal (255) generated by filtering (250, 252, 254) the blade pitch angle reference signal (40) with the following transfer function

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