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127 records (took 0.024 seconds)

    41.
    发明专利
    未知

    公开(公告)号：FI831031L

    公开(公告)日：1983-10-03

    申请号：FI831031

    申请日：1983-03-25

    Applicant: UNITED TECHNOLOGIES CORP

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

    IPC: F03D7/04 ,  F03D7/02 ,  F03D13/20 ,  G05B

    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

    42.
    发明专利
    未知

    公开(公告)号：FI831030L

    公开(公告)日：1983-10-03

    申请号：FI831030

    申请日：1983-03-25

    Applicant: UNITED TECHNOLOGIES CORP

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

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

    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.

    43.
    发明专利
    未知

    公开(公告)号：DK285183D0

    公开(公告)日：1983-06-21

    申请号：DK285183

    申请日：1983-06-21

    Applicant: UNITED TECHNOLOGIES CORP

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

    IPC: F03D7/04 ,  F03D7/02 ,  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.

    44.
    发明专利
    未知

    公开(公告)号：DK136583D0

    公开(公告)日：1983-03-25

    申请号：DK136583

    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: 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.

    WIND TURBINE CONTROL SYSTEM
    45.
    发明专利
    WIND TURBINE CONTROL SYSTEM 未知

    公开(公告)号：AU526931B2

    公开(公告)日：1983-02-10

    申请号：AU4963079

    申请日：1979-08-07

    Applicant: UNITED TECHNOLOGIES CORP

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

    IPC: F03D9/00 ,  F03D7/02 ,  F03D7/04 ,  H02P9/04

    Abstract: A multi-mode electronic wind turbine control system establishes a reference blade angle BR for a two-bladed, horizontal axis, variable pitch wind turbine rotor, the blade angle being regulated by a hydraulic pitch change mechanism (38). The rotor (10), via appropriate shafts and a gearbox (20), is coupled to a synchronous generator (24) to produce electrical energy which is fed to a power utility grid. The control system (36) provides closed loop pitch control for rotor acceleration rate during start-up, for rotor deceleration rate during shut-down, for speed control when the synchronous generator is off-line, and for power control when the synchronous generator is on-line. A single control integrator is used for all closed loop operating modes, with a rate limiter circuit in front of the control integrator to prevent integrator overtravel. The integrator has maximum and minimum blade angle stops, the minimum stop being variable as a function of rotor speed and wind speed. When on-line, power control is provided by a unique shaft torque control using proportional plus integral plus derivative controls in combination.

    47.
    发明专利
    未知

    公开(公告)号：DK167235B1

    公开(公告)日：1993-09-20

    申请号：DK508483

    申请日：1983-11-07

    Applicant: UNITED TECHNOLOGIES CORP

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

    IPC: F03D7/04 ,  F03D7/02

    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.

    48.
    发明专利
    未知

    公开(公告)号：DE3687300T2

    公开(公告)日：1993-04-15

    申请号：DE3687300

    申请日：1986-09-29

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： HARNER KERMIT IVAN ,  SCHNEIDER ROY WILFRED ,  HARRIS MARK LINN

    IPC: B64C11/50 ,  H02P5/52 ,  G05D13/62 ,  B64C11/46

    Abstract: An improved slave propeller synchrophaser (l0) includes a first control (l4) responsive to a phase difference signal (28) and a phase difference reference signal (26) for providing a phase error signal (ll2) and for providing a propeller speed reference bias signal (40) for a speed governor (46), and also includes, according to the present invention, a second control (l2) responsive to the phase error signal (ll2) for providing an engine power reference bias signal (80) for an engine power control for providing a very limited amount of propeller fine speed control within the dead band of the propeller speed governor while at the same time substantially maintaining engine power at the commanded power level.

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