VARIABLE SPEED WIND TURBINE
    52.
    发明专利

    公开(公告)号:AU6536686A

    公开(公告)日:1987-05-21

    申请号:AU6536686

    申请日:1986-11-17

    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.

    YAW OSCILLATION MINIMIZATION SYSTEM

    公开(公告)号:AU2099883A

    公开(公告)日:1984-05-17

    申请号:AU2099883

    申请日:1983-11-04

    Abstract: Yaw (fishtail) oscillations in large wind turbines (10) are minimized by damping provided by a drive motor (65) connecting the turbine to the supporting tower (50) therefor at, for example, a yaw bearing (45). The drive motor drives the wind turbine in yaw and maintains desired yaw setting of the turbine. The motor is also capable of being driven by yaw oscillations of the wind turbine and in being so driven, dissipates the energy of such oscillations.

    55.
    发明专利
    未知

    公开(公告)号:FI834073A0

    公开(公告)日:1983-11-07

    申请号:FI834073

    申请日:1983-11-07

    Abstract: Yaw (fishtail) oscillations in large wind turbines (10) are minimized by damping provided by a drive motor (65) connecting the turbine to the supporting tower (50) therefor at, for example, a yaw bearing (45). The drive motor drives the wind turbine in yaw and maintains desired yaw setting of the turbine. The motor is also capable of being driven by yaw oscillations of the wind turbine and in being so driven, dissipates the energy of such oscillations.

    56.
    发明专利
    未知

    公开(公告)号:DE3113384A1

    公开(公告)日:1982-04-08

    申请号:DE3113384

    申请日:1981-04-02

    Abstract: A wind turbine adapted to rotationally drive a load such as an electric power generator 50 includes in the turbine drive train, resiliently mounted gearing 55 which isolates and damps the load from drive train disturbances caused by wind gusts and wind stream dyssemmetry and inherent torsional vibration without assistance from modulation of turbine blade pitch.

Patent Agency Ranking