公开(公告)号：IN164700B

公开(公告)日：1989-05-13

申请号：IN835CA1986

申请日：1986-11-17

Applicant: UNITED TECHNOLOGIES CORP

Inventor： DIVALENTIN EUGENE ,  HEALY HENRY STEPHEN

IPC: F03D7/04 ,  F03D7/02 ,  H02P9/00 ,  H02P9/04 ,  H02P9/42 ,  F03B15/04

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.

公开(公告)号：CA1258092A

公开(公告)日：1989-08-01

申请号：CA522369

申请日：1986-11-06

Applicant: UNITED TECHNOLOGIES CORP

Inventor： DOMAN GLIDDEN S ,  KOS JOSEPH M ,  HARNER KERMIT I ,  DIVALENTIN EUGENE ,  HEALY HENRY S

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

Abstract: A VARIABLE SPEED WIND TURBINE 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：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.