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69 条记录 (耗时 0.013 秒)

    System and method for braking a wind turbine rotor at an overspeed condition
    2.
    发明公开
    System and method for braking a wind turbine rotor at an overspeed condition 审中-公开
    系统与Verfahren zum Abbremsen eines Windturbinenrotors beiÜberdrehzahl

    公开(公告)号：EP2698534A2

    公开(公告)日：2014-02-19

    申请号：EP13179572.6

    申请日：2013-08-07

    申请人： General Electric Company

    发明人： Perley, Thomas Franklin ,  Gerber, Brandon Shane ,  Yarbourgh, Aaron

    IPC分类号： F03D7/02

    CPC分类号： F03D7/0248 ,  F03D7/0244 ,  F03D7/0252 ,  Y02E10/723

    摘要： A system and method for braking a wind turbine 10 includes monitoring rotation of the wind turbine generator rotor 18. A braking torque is applied to reduce the rotational speed of the rotor 18 at a first setpoint rotational speed. The braking torque is proportionally increased as the rotational speed of the rotor 18 increases beyond the first detected setpoint rotational speed up to a maximum braking torque.

    摘要翻译： 用于制动风力涡轮机10的系统和方法包括监测风力涡轮发电机转子18的旋转。施加制动转矩以在第一设定转速下降低转子18的转速。 当转子18的旋转速度超过第一检测到的设定点转速直到最大制动转矩时，制动转矩成比例地增加。

    WIND TURBINE HAVING SECONDARY ROTORS
    3.
    发明公开
    WIND TURBINE HAVING SECONDARY ROTORS 有权
    - 二次ROTORS风力发电机

    公开(公告)号：EP1390615A1

    公开(公告)日：2004-02-25

    申请号：EP02735087.5

    申请日：2002-04-23

    申请人： Forskningscenter Ris (Ris National Laboratory)

    发明人： MADSEN, Helge, Aagaard ,  RASMUSSEN, Flemming

    IPC分类号： F03D1/02 ,  F03D11/00

    CPC分类号： F03D7/0252 ,  F03D1/02 ,  F03D1/0608 ,  F03D5/00 ,  F05B2240/2022 ,  F05B2240/34 ,  Y02E10/70 ,  Y02E10/721 ,  Y02E10/723

    摘要： The present invention comprises a wind turbine design where the preferred layout is a two bladed teetered downwind rotor with fixed pitch and with a smaller secondary rotor coupled to an electric generator mounted at the tip of each main rotor blade for extraction of the power of the main rotor as well as the power of the tip vortices of the main rotor. The functions of tip rotors are two-fold: They constitute the energy conversion system and the safety braking system. Coning of the main rotor in combination with the considerable weight at the blade tips is used to balance the wind loads and thus reducing the flapwise blade root moment. Speed control of the secondary rotors constitutes the main control of the wind turbine and they also act as a safe brake system as their thrust coefficient becomes high when they speed up at a power loss situation.

    Overspeed protection system and method for wind turbines
    8.
    发明公开
    Overspeed protection system and method for wind turbines 审中-公开
    超速保护系统和方法，用于风力涡轮机

    公开(公告)号：EP2400150A3

    公开(公告)日：2014-07-09

    申请号：EP11170690.9

    申请日：2011-06-21

    申请人： General Electric Company

    发明人： Menke, Detlef ,  Loh, Friedrich

    IPC分类号： F03D7/02 ,  F03D7/04

    CPC分类号： F03D7/0224 ,  F03D7/0252 ,  F03D7/0268 ,  F03D7/047 ,  F05B2270/1011 ,  F05B2270/327 ,  Y02E10/723

    摘要： An overspeed protection system 200 for a wind turbine 100 having a hub 110 and at least one rotor blade 108 mounted to the hub includes a rotation sensor adapted for measuring a rotor speed of said wind turbine; a comparator connected to the rotation sensor and adapted for comparing the measured rotor speed with a predetermined threshold value of the rotor speed wherein the comparator outputs a signal indicative of the comparison; and an auxiliary pitch drive controller connected to the comparator and adapted to receive the signal indicative of the comparison, the auxiliary pitch drive controller being further adapted for controlling a pitch drive unit of the wind turbine 100 independently of a main turbine controller 202 and, if the threshold value is exceeded, to adjust a pitch angle of the rotor blade of the wind turbine so that aerodynamic braking of the wind turbine is effected.

    Wind turbine blade with lift-regulating means
    9.
    发明公开
    Wind turbine blade with lift-regulating means 审中-公开
    Windturbinenschaufel mit hubregulierenden Mitteln

    公开(公告)号：EP2549097A1

    公开(公告)日：2013-01-23

    申请号：EP11174627.7

    申请日：2011-07-20

    申请人： LM Wind Power A/S

    发明人： Bæk, Peter

    IPC分类号： F03D7/02 ,  F03D1/06

    CPC分类号： F03D1/0675 ,  F03D7/022 ,  F03D7/0252 ,  Y02E10/721 ,  Y02E10/723

    摘要： A wind turbine blade (10) comprises an airfoil region (26) with a longitudinally extending lift-regulating means (12) allowing for a reduction of the lift in a longitudinally extending zone. The lift-regulating means (12) comprises a duct (40) extending transversely between the pressure side (36) and the suction side (38), and a closure means (42) provided on the suction side (38) and being movable between a closed position relative to the duct (40) and an open position relative to the duct (40). The position of the closure means (42) is controlled by an activating means, such as a linear actuator (54) connected to a control unit connected to a load sensor arranged on the blade.

    摘要翻译： 风力涡轮机叶片（10）包括翼型区域（26），其具有纵向延伸的提升调节装置（12），允许在纵向延伸区域中降低升力。 提升调节装置（12）包括在压力侧（36）和吸力侧（38）之间横向延伸的管道（40）和设置在吸力侧（38）上的封闭装置（42） 相对于管道（40）的关闭位置和相对于管道（40）的打开位置。 关闭装置（42）的位置由一个启动装置控制，诸如连接到布置在叶片上的负载传感器的控制单元的线性致动器（54）。