公开(公告)号：BR8301455A

公开(公告)日：1983-11-29

申请号：BR8301455

申请日：1983-03-22

Applicant: UNITED TECHNOLOGIES CORP

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

IPC: F03D7/04 ,  F03D7/02 ,  F03D13/20 ,  F03D9/00

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.

公开(公告)号：DE3308564A1

公开(公告)日：1983-10-13

申请号：DE3308564

申请日：1983-03-10

Applicant: UNITED TECHNOLOGIES CORP

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

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

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

公开(公告)号：AU1248183A

公开(公告)日：1983-10-06

申请号：AU1248183

申请日：1983-03-11

Applicant: UNITED TECHNOLOGIES CORP

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

IPC: F03D7/04 ,  F03D7/02 ,  F03D13/20 ,  F16F15/02

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

公开(公告)号：DK136683A

公开(公告)日：1983-10-03

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

公开(公告)号：FI832192A0

公开(公告)日：1983-06-16

申请号：FI832192

申请日：1983-06-16

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.

公开(公告)号：IT8320368D0

公开(公告)日：1983-03-30

申请号：IT2036883

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: 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.

公开(公告)号：IT8125807D0

公开(公告)日：1981-12-23

申请号：IT2580781

申请日：1981-12-23

Applicant: UNITED TECHNOLOGIES CORP

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

IPC: F03D7/02 ,  F03D7/04 ,  F03D

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.

公开(公告)号：FI792440A

公开(公告)日：1980-02-15

申请号：FI792440

申请日：1979-08-06

Applicant: UNITED TECHNOLOGIES CORP

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

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

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.

公开(公告)号：FR2273955A1

公开(公告)日：1976-01-02

申请号：FR7517389

申请日：1975-06-04

Applicant: UNITED TECHNOLOGIES CORP

Inventor： HARNER KERMIT IVAN ,  SCHNEIDER ROY WILFRED

IPC: F02C9/28 ,  B64D31/06 ,  F02C9/44 ,  F02C9/54 ,  F02C9/58 ,  F02K1/15 ,  F02K3/06 ,  F02K3/04 ,  F01D1/30 ,  F01D7/00 ,  F02C9/02

Abstract: A coordinated fan pitch, fuel flow and fan exhaust nozzle area control for a gas turbine powered aircraft propulsor of the bypass duct, variable pitch and exhaust nozzle configuration serves to effectuate reverse pitch change through feather, by minimizing forward thrust excursion and shaft torque to obtain rapid reverse thrust response.

公开(公告)号：NO178905B

公开(公告)日：1996-03-18

申请号：NO864564

申请日：1986-11-17

Applicant: UNITED TECHNOLOGIES CORP

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

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

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.