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公开(公告)号：NO830944L
公开(公告)日：1983-10-03
申请号：NO830944
申请日：1983-03-17
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：FI831030A0
公开(公告)日：1983-03-25
申请号：FI831030
申请日：1983-03-25
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：AU4963079A
公开(公告)日：1980-02-21
申请号：AU4963079
申请日：1979-08-07
Applicant: UNITED TECHNOLOGIES CORP
Inventor： KOS JOSEPH MICHAEL , PATRICK JOHN PETER , HARNER KERMIT IVAN
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.
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公开(公告)号：NO792639A
公开(公告)日：1980-02-19
申请号：NO792639
申请日：1979-08-14
Applicant: UNITED TECHNOLOGIES CORP
Inventor： KOS JOSEPH MICHAEL , PATRICK JOHN PETER , HARNER KERMIT IVAN
CPC classification number: F03D7/0224 , F03D7/026 , F03D7/0264 , F03D7/043 , F05B2220/70642 , F05B2270/101 , F05B2270/1016 , F05B2270/102 , F05B2270/1032 , F05B2270/309 , F05B2270/32 , F05B2270/327 , F05B2270/328 , F05B2270/706 , H02P9/04 , H02P2101/15 , Y02E10/723 , Y02E10/725
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公开(公告)号：FR2428749A1
公开(公告)日：1980-01-11
申请号：FR7915179
申请日：1979-06-13
Applicant: UNITED TECHNOLOGIES CORP
Inventor： HARNER KERMIT IVAN , KOS JOSEPH MICHAEL , PATRICK JOHN PETER
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Patent Agency Ranking
公开(公告)号：DE69200406T2
公开(公告)日：1995-02-16
申请号：DE69200406
申请日：1992-03-26
Applicant: UNITED TECHNOLOGIES CORP
Inventor： BRUUN EUGENE ROBERT , KOS JOSEPH MICHAEL
Abstract: A gas turbine engine bleed air system (10) in which air flow from a high pressure (HP) and a low pressure (LP) compressor stage of a gas turbine engine are mixed together, by controlling the pressure at the outlet of a proportional valve, (PRV) the pressure is controlled by modulating the flow area of the proportional valve (HPSOV) through which the high pressure air flows in order to achieve a scheduled pressure value, where the scheduled pressure value is determined as a function of a temperature error at a location downstream of the proportional valve (PRV) in the bleed air system.
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公开(公告)号：ES2000996B3
公开(公告)日：1991-07-01
申请号：ES87630072
申请日：1987-04-24
Applicant: UNITED TECHNOLOGIES CORP
Inventor： KOS JOSEPH MICHAEL , RAPP ALLEN FLOYD
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公开(公告)号：DE3767020D1
公开(公告)日：1991-02-07
申请号：DE3767020
申请日：1987-04-24
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：AU582981B2
公开(公告)日：1989-04-13
申请号：AU6536686
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：ES2000996A4
公开(公告)日：1988-04-16
申请号：ES87630072
申请日：1987-04-24
Applicant: UNITED TECHNOLOGIES CORP
Inventor： KOS JOSEPH MICHAEL , RAPP ALLEN FLOYD
Abstract: UNA TURBINA DE VIENTO QUE SE CONTROLA DE UNA FORMA QUE EVITA QUE LA TURBINA PERSISTA EN UNA VELOCIDAD CRITICA QUE PODRIA OCASIONAR VIBRACION EXCESIVA. EL METODO Y APARATO DECUBIERTOS INCREMENTAN LA VELOCIDAD EN UNA PROPORCION SELECCIONADA CON RESPECTO AL GENERADOR DE SALIDA DE POTENCIA, EXCEPTO EN LA PROXIMIDAD DE LA VELOCIDAD CRITICA. LA PROPORCION SELECCIONADA SE CAMBIA EN LA PROXIMIDAD DE LA VELOCIDAD CRITICA A UNA PROPORCION DIFERENTE QUE SE SELECCIONA INFERIOR, A FIN DE EVITAR LA VELOCIDAD CRITICA. DESPUES DE QUE LA POTENCIA DE SALIDA SE INCREMENTE O SE DECREMENTE POR DEBAJO DEL PUNTO CRITICO, UNA DISCONTINUIDAD DELIBERADA EN LA SEÑAL DE COMANDO DE LA VELOCIDAD SE INDUCE. UN RAPIDO CAMBIO A TRAVES DE LA VELOCIDAD CRITICA SE ACOMPAÑA POR EL CORRESPONDIENTE CAMBIO DE SALIDA DE POTENCIA. SI LA VELOCIDAD SE INCREMENTA EN UNA CANTIDAD SELECCIONADA POR DEBAJO DE LA VELOCIDAD CRITICA, Y LAS SEÑALES DE COMANDO DE LA VELOCIDAD SUBEN A UN NIVEL SUPERIOR JUSTO ANTES DE ALCANZAR LA VELOCIDAD CRITICA, LA VELOCIDAD SE INCREMENTARA RAPIDAMENTE Y PASARA RAPIDAMENTE A TRAVES DE LA VELOCIDAD CRITICA MIENTRAS LA SALIDA DE POTENCIA SE REDUCE. SIMILARMENTE, SI LA VELOCIDAD SE ESTA REDUCIENDO EN UNA CANTIDAD SELECCIONADA CERCA DE LA VELOCIDAD CRITICA, Y LAS SEÑALES DE CONTROL DE LA VELOCIDAD BAJAN A UN NIVEL INFERIOR JUSTO ANTES DE ALCANZAR LA VELOCIDAD CRITICA, LA VELOCIDAD SE REDUCIRA RAPIDAMENTE Y RAPIDAMENTE PASARA A TRAVES DE LA VELOCIDAD CRITICA MIENTRAS LA SALIDA DE POTENCIA SE REDUCE.
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