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    VARIABLE SPEED WIND TURBINE
    1.
    发明专利
    VARIABLE SPEED WIND TURBINE 未知

    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

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

    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.

    2.
    发明专利
    未知

    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

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

    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.

    3.
    发明专利
    未知

    公开(公告)号：NO864565L

    公开(公告)日：1987-05-19

    申请号：NO864565

    申请日：1986-11-17

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： DIVALENTIN EUGENE D ,  HEALY HENRY STEPHEN

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

    Abstract: Apparatus and method for controlling a variable speed wind turbine-generator at improved efficiencies is disclosed. The method and apparatus of the invention control the rotor tip speed below the limiting torque of the wind turbine at a selected constant velocity ratio with respect to wind speed and. above the limiting torque, control the rotor tip speed at speeds greater than those dictated by the constant velocity ratio up to a speed or power limit. This may be accomplished by controlling tip speed above the point where limiting torque is attainable to maintain optimal wind turbine performance along the performance envelope.

    5.
    发明专利
    未知

    公开(公告)号：NO864564D0

    公开(公告)日：1986-11-17

    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

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

    TORQUE CONTROL FOR WIND TURBINE
    7.
    发明专利
    TORQUE CONTROL FOR WIND TURBINE 未知

    公开(公告)号：AU599283B2

    公开(公告)日：1990-07-12

    申请号：AU6552086

    申请日：1986-11-18

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： DIVALENTIN EUGENE D ,  HEALY HENRY STEPHEN

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

    Abstract: Apparatus and method for controlling a variable speed wind turbine-generator at improved efficiencies is disclosed. The method and apparatus of the invention control the rotor tip speed below the limiting torque of the wind turbine at a selected constant velocity ratio with respect to wind speed and. above the limiting torque, control the rotor tip speed at speeds greater than those dictated by the constant velocity ratio up to a speed or power limit. This may be accomplished by controlling tip speed above the point where limiting torque is attainable to maintain optimal wind turbine performance along the performance envelope.

    TORQUE CONTROL FOR WIND TURBINE
    10.
    发明专利
    TORQUE CONTROL FOR WIND TURBINE 未知

    公开(公告)号：AU6552086A

    公开(公告)日：1987-05-21

    申请号：AU6552086

    申请日：1986-11-18

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： DIVALENTIN EUGENE D ,  HEALY HENRY STEPHEN

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

    Abstract: Apparatus and method for controlling a variable speed wind turbine-generator at improved efficiencies is disclosed. The method and apparatus of the invention control the rotor tip speed below the limiting torque of the wind turbine at a selected constant velocity ratio with respect to wind speed and. above the limiting torque, control the rotor tip speed at speeds greater than those dictated by the constant velocity ratio up to a speed or power limit. This may be accomplished by controlling tip speed above the point where limiting torque is attainable to maintain optimal wind turbine performance along the performance envelope.

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