公开(公告)号：FI89533C

公开(公告)日：1993-10-11

申请号：FI864699

申请日：1986-11-18

Applicant: UNITED TECHNOLOGIES CORP

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

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

公开(公告)号：DK159286B

公开(公告)日：1990-09-24

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.

公开(公告)号：NO161190B

公开(公告)日：1989-04-03

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.

公开(公告)号：FI76867C

公开(公告)日：1988-12-12

申请号：FI814151

申请日：1981-12-23

Applicant: UNITED TECHNOLOGIES CORP

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

IPC: F03D7/04 ,  F03D7/02

公开(公告)号：NO158557C

公开(公告)日：1988-09-28

申请号：NO792639

申请日：1979-08-14

Applicant: UNITED TECHNOLOGIES CORP

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

IPC: F03D7/02 ,  F03D7/04 ,  F03D9/00 ,  H02P9/04 ,  G05D3/00

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：NO158557B

公开(公告)日：1988-06-20

申请号：NO792639

申请日：1979-08-14

Applicant: UNITED TECHNOLOGIES CORP

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

IPC: F03D7/02 ,  F03D7/04 ,  F03D9/00 ,  H02P9/04 ,  G05D3/00

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：NO158110B

公开(公告)日：1988-04-05

申请号：NO832216

申请日：1983-06-20

Applicant: UNITED TECHNOLOGIES CORP

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

IPC: F03D7/02 ,  F03D7/04

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：ZA868593B

公开(公告)日：1987-06-24

申请号：ZA868593

申请日：1986-11-12

Applicant: UNITED TECHNOLOGIES CORP

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

IPC: F03D7/02 ,  F03D9/00 ,  H02P9/42 ,  F03D7/04 ,  F01D ,  F03D ,  G05D ,  H02P

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.

公开(公告)号：IT1163197B

公开(公告)日：1987-04-08

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：AU555786B2

公开(公告)日：1986-10-09

申请号：AU1566883

申请日：1983-06-09

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.