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    MULTI-MODE CONTROL SYSTEM FOR WIND TURBINES
    1.
    发明授权
    MULTI-MODE CONTROL SYSTEM FOR WIND TURBINES 失效

    公开(公告)号：KR840002220B1

    公开(公告)日：1984-12-03

    申请号：KR790002702

    申请日：1979-08-08

    Applicant: UNITED TECHNOLOGIES CORP

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

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

    Abstract: The multi-mode electronic wind turbine control system establishes a reference blade angle for a two-bladed, horizontal axis, variable pitch wind turbine rotor. The blade angle is regulated by a hydraulic pitch change mechanism. The rotor is coupled to a sync. generator. The control system provides closed loop pitch control for rotor acceleration/deceleration speed and power. 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 over-travel.

    3.
    发明专利
    未知

    公开(公告)号：DK159286C

    公开(公告)日：1991-02-18

    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

    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.

    4.
    发明专利
    未知

    公开(公告)号：NO161190C

    公开(公告)日：1989-07-12

    申请号：NO833993

    申请日：1983-11-02

    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.

    6.
    发明专利
    未知

    公开(公告)号：FI77917B

    公开(公告)日：1989-01-31

    申请号：FI832192

    申请日：1983-06-16

    Applicant: UNITED TECHNOLOGIES CORP

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

    IPC: F03D7/04 ,  F03D7/02

    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.

    8.
    发明专利
    未知

    公开(公告)号：DK547786A

    公开(公告)日：1987-05-19

    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 ,  H02P9/00

    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.

    9.
    发明专利
    未知

    公开(公告)号：NO156257B

    公开(公告)日：1987-05-11

    申请号：NO814360

    申请日：1981-12-21

    Applicant: UNITED TECHNOLOGIES CORP

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

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

    Abstract: A blade pitch angle control for a wind turbine-generator establishing an optimum power or torque reference signal which, when operating conditions so warrant, is not limited by the nominal torque or power ratings of various turbine generator components. The reference signal is indicative of a maximum blade angle setting for safe operation of the wind turbine. An integral or lag compensation circuit for enhanced transient and steady-state operation may be employed.

    10.
    发明专利
    未知

    公开(公告)号：IT1163511B

    公开(公告)日：1987-04-08

    申请号：IT2159483

    申请日：1983-06-13

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： HARNER KERMIT IVAN ,  PATRICK JOHN PETER ,  VOSSELLER 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.

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