-
公开(公告)号：DE2961688D1
公开(公告)日：1982-02-18
申请号：DE2961688
申请日：1979-08-02
Applicant: UNITED TECHNOLOGIES CORP
Inventor： KOS JOSEPH MICHAEL , HARNER KERMIT IVAN , PATRICK JOHN PETER
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：DE2922972A1
公开(公告)日：1980-01-03
申请号：DE2922972
申请日：1979-06-06
Applicant: UNITED TECHNOLOGIES CORP
Inventor： HARNER KERMIT IVAN , KOS JOSEPH MICHAEL , PATRICK JOHN PETER
-
公开(公告)号：DE3687300D1
公开(公告)日：1993-01-28
申请号：DE3687300
申请日：1986-09-29
Applicant: UNITED TECHNOLOGIES CORP
Inventor： HARNER KERMIT IVAN , SCHNEIDER ROY WILFRED , HARRIS MARK LINN
Abstract: An improved slave propeller synchrophaser (l0) includes a first control (l4) responsive to a phase difference signal (28) and a phase difference reference signal (26) for providing a phase error signal (ll2) and for providing a propeller speed reference bias signal (40) for a speed governor (46), and also includes, according to the present invention, a second control (l2) responsive to the phase error signal (ll2) for providing an engine power reference bias signal (80) for an engine power control for providing a very limited amount of propeller fine speed control within the dead band of the propeller speed governor while at the same time substantially maintaining engine power at the commanded power level.
-
公开(公告)号：FI77917C
公开(公告)日：1989-05-10
申请号：FI832192
申请日：1983-06-16
Applicant: UNITED TECHNOLOGIES CORP
Inventor： HARNER KERMIT IVAN , PATRICK JOHN PETER , VOSSELLER KENNETH FRANKLYN
-
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.
-
Patent Agency Ranking
公开(公告)号：FR2528916B1
公开(公告)日：1988-07-22
申请号：FR8309739
申请日：1983-06-13
Applicant: UNITED TECHNOLOGIES CORP
Inventor： HARNER KERMIT IVAN , PATRICK JOHN PETER , VOSSELLER KENNETH FRANKLYN
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：ES2002016A6
公开(公告)日：1988-07-01
申请号：ES8602286
申请日：1986-09-29
Applicant: UNITED TECHNOLOGIES CORP
Inventor： HARNER KERMIT IVAN , SCHNEIDER ROY WILFRED , HARRIS MARK LINN
Abstract: UN SINCRONIZADOR DE FASE (10) PERFECCIONADO PARA HELICE ESCLAVA, EL CUAL INCLUYE UN PRIMER CONTROL (14) QUE RESPONDE A UNA SEÑAL DE DIFERENCIA DE FASE (28) Y UNA SEÑAL DE REFERENCIA DE DIFERENCIA DE FASE (26) PARA PROPORCIONAR UNA SEÑAL DE ERROR DE FASE (112) Y PARA PROPORCIONAR UNA SEÑAL DERIVADA DE REFERENCIA DE LA VELOCIDAD DE LA HELICE (40) PARA UN MANDO DE GOBIERNO DE VELOCIDAD (46), Y TAMBIEN INCLUYE, DE ACUERDO CON EL PRESENTE INVENTO, UN SEGUNDO CONTROL (12) QUE RESPONDE A LA SEÑAL DE ERROR DE FASE (112) A FIN DE PROPORCIONAR UNA SEÑAL DERIVADA DE REFERENCIA DE LA POTENCIA DEL MOTOR (80) PARA UN CONTROL DE LA POTENCIA DEL MOTOR, A FIN DE PROPORCIONAR UNA CANTIDAD MUY LIMITADA DE CONTROL PARA EL AJUSTE DE LA VELOCIDAD DE LA HELICE DENTRO DE LA BANDA MUERTA DEL MANDO DE GOBIERNO DE LA VELOCIDAD DE LA HELICE, MIENTRAS QUE EL MISMO TIEMPO MANTIENE LA POTENCIA DEL MOTOR SUSTANCIALMENTE AL NIVEL DE POTENCIA DE GOBIERNO.
-
公开(公告)号：BR8605672A
公开(公告)日：1987-08-18
申请号：BR8605672
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.
-
公开(公告)号：DE3371673D1
公开(公告)日：1987-06-25
申请号：DE3371673
申请日：1983-11-04
Applicant: UNITED TECHNOLOGIES CORP
Inventor： HARNER KERMIT IVAN , NIESSEN FRANK RICHARD , SHERMAN ROBERT
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：NO864564A
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
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.
-
-
-
-
-
-
-
-
-
Search Results
127
records
(took 0.025 seconds)
