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.

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.

公开(公告)号：IN164330B

公开(公告)日：1989-02-18

申请号：IN821CA1986

申请日：1986-11-13

Applicant: UNITED TECHNOLOGIES CORP

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

IPC: F03D7/02 ,  F03D7/04 ,  F03D9/00 ,  H02P9/42 ,  F03B1/00

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.

公开(公告)号：BR8702048A

公开(公告)日：1988-02-09

申请号：BR8702048

申请日：1987-04-28

Applicant: UNITED TECHNOLOGIES CORP

Inventor： KOS JOSEPH MICHAEL ,  RAPP ALLEN FLOYD

IPC: F03D7/00 ,  F03D7/02 ,  F03D7/04 ,  F03D9/00 ,  H02P9/00 ,  H02P9/04 ,  H02P9/42 ,  G05D13/62

Abstract: A variable speed wind turbine is controlled in a way which avoids the turbine lingering at a critical speed which would otherwise tend to cause excessive vibration. The disclosed method and apparatus increases speed at a selected rate with respect to generator output power except in the vicinity of the critical speed. The selected rate is changed in the vicinity of the critical speed to a different rate which is selected slower in the selected embodiment, to avoid commanding the critical speed. After the output power increases or decreases beyond the critical point, a deliberate discontinuity in the speed command signal is induced. A rapid speed change through the critical speed is accompanied by a corresponding power output change. If the speed is increasing at a selected slower rate below the critical speed, and the speed command signal is stepped to a higher level just before reaching the critical speed, the speed will rapidly increase and quickly pass through the critical speed while the power output decreases. Similarly, if the speed is decreasing at a selected slower rate above the critical speed, and the speed command signal is stepped to a lower level just before reaching the critical speed, the speed will rapidly decrease and quickly pass through the critical speed while the power output increases.

公开(公告)号：NO871728L

公开(公告)日：1987-10-29

申请号：NO871728

申请日：1987-04-27

Applicant: UNITED TECHNOLOGIES CORP

Inventor： KOS JOSEPH MICHAEL ,  RAPP ALLEN FLOYD

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

Abstract: A variable speed wind turbine is controlled in a way which avoids the turbine lingering at a critical speed which would otherwise tend to cause excessive vibration. The disclosed method and apparatus increases speed at a selected rate with respect to generator output power except in the vicinity of the critical speed. The selected rate is changed in the vicinity of the critical speed to a different rate which is selected slower in the selected embodiment, to avoid commanding the critical speed. After the output power increases or decreases beyond the critical point, a deliberate discontinuity in the speed command signal is induced. A rapid speed change through the critical speed is accompanied by a corresponding power output change. If the speed is increasing at a selected slower rate below the critical speed, and the speed command signal is stepped to a higher level just before reaching the critical speed, the speed will rapidly increase and quickly pass through the critical speed while the power output decreases. Similarly, if the speed is decreasing at a selected slower rate above the critical speed, and the speed command signal is stepped to a lower level just before reaching the critical speed, the speed will rapidly decrease and quickly pass through the critical speed while the power output increases.

公开(公告)号：NO871728A

公开(公告)日：1987-10-29

申请号：NO871728

申请日：1987-04-27

Applicant: UNITED TECHNOLOGIES CORP

Inventor： KOS JOSEPH MICHAEL ,  RAPP ALLEN FLOYD

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

CPC classification number: F03D7/042 ,  F03D7/0272 ,  F03D7/0276 ,  F03D9/255 ,  F03D15/10 ,  F03D17/00 ,  F05B2270/101 ,  F05B2270/327 ,  F05B2270/335 ,  H02P9/42 ,  H02P2101/15 ,  Y02E10/723

Abstract: A variable speed wind turbine is controlled in a way which avoids the turbine lingering at a critical speed which would otherwise tend to cause excessive vibration. The disclosed method and apparatus increases speed at a selected rate with respect to generator output power except in the vicinity of the critical speed. The selected rate is changed in the vicinity of the critical speed to a different rate which is selected slower in the selected embodiment, to avoid commanding the critical speed. After the output power increases or decreases beyond the critical point, a deliberate discontinuity in the speed command signal is induced. A rapid speed change through the critical speed is accompanied by a corresponding power output change. If the speed is increasing at a selected slower rate below the critical speed, and the speed command signal is stepped to a higher level just before reaching the critical speed, the speed will rapidly increase and quickly pass through the critical speed while the power output decreases. Similarly, if the speed is decreasing at a selected slower rate above the critical speed, and the speed command signal is stepped to a lower level just before reaching the critical speed, the speed will rapidly decrease and quickly pass through the critical speed while the power output increases.

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.

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.

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

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.