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公开(公告)号：AU7221487A
公开(公告)日：1987-10-29
申请号：AU7221487
申请日：1987-04-28
Applicant: UNITED TECHNOLOGIES CORP
Inventor： KOS JOSEPH MICHAEL , RAPP ALLEN FLOYD
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.
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公开(公告)号：ZA8608593B
公开(公告)日：1987-06-24
申请号：ZA8608593
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
CPC classification number: H02P9/42 , F03D7/0272 , F03D9/255 , F03D15/10 , F03D17/00 , F05B2220/706 , F05B2260/96 , F05B2270/101 , F05B2270/1016 , F05B2270/1032 , F05B2270/20 , F05B2270/327 , H02P2101/15 , Y02E10/723 , Y02E10/725
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.
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公开(公告)号：NO864564L
公开(公告)日：1987-05-19
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
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.
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公开(公告)号：FI864699A
公开(公告)日：1987-05-19
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
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.
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公开(公告)号：FI864699A0
公开(公告)日：1986-11-18
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
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.
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Patent Agency Ranking
公开(公告)号：AU552913B2
公开(公告)日：1986-06-26
申请号：AU1248183
申请日：1983-03-11
Applicant: UNITED TECHNOLOGIES CORP
Inventor： KOS JOSEPH MICHAEL , HARNER KERMIT IVAN , PATRICK JOHN PETER
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
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公开(公告)号：ZA831631B
公开(公告)日：1983-11-30
申请号：ZA831631
申请日：1983-03-09
Applicant: UNITED TECHNOLOGIES CORP
Inventor： KOS JOSEPH MICHAEL , PATRICK JOHN PETER , HARNER KERMIT IVAN
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.
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公开(公告)号：ZA8301632B
公开(公告)日：1983-11-30
申请号：ZA8301632
申请日：1983-03-09
Applicant: UNITED TECHNOLOGIES CORP
Inventor： KOS JOSEPH MICHAEL , PATRIC JOHN PETER , HARNER KERMIT IVAN
CPC classification number: F03D7/043 , F03D7/0224 , F03D7/0292 , F03D9/25 , F03D80/00 , F05B2240/912 , F05B2260/821 , F05B2260/96 , F05B2270/1033 , F05B2270/322 , F05B2270/335 , Y02E10/723 , Y02E10/728
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
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公开(公告)号：GB2117933A
公开(公告)日：1983-10-19
申请号：GB8305992
申请日：1983-03-04
Applicant: UNITED TECHNOLOGIES CORP
Inventor： KOS JOSEPH MICHAEL , PATRICK JOHN PETER , HARNER KERMIT IVAN
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.
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公开(公告)号：FR2524570A1
公开(公告)日：1983-10-07
申请号：FR8305316
申请日：1983-03-31
Applicant: UNITED TECHNOLOGIES CORP
Inventor： KOS JOSEPH MICHAEL , PATRICK JOHN PETER , HARNER KERMIT IVAN
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
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