Wind turbine system for satisfying low-voltage ride through requirement
    4.
    发明授权
    Wind turbine system for satisfying low-voltage ride through requirement 有权
    风力发电系统满足低压乘车要求

    公开(公告)号:US07709972B2

    公开(公告)日:2010-05-04

    申请号:US11896152

    申请日:2007-08-30

    IPC分类号: H02P9/04 F03D9/00

    摘要: A wind turbine system is provided with a wind turbine rotor, a pitch control mechanism, and an emergency power supply mechanism. The wind turbine rotor includes a blade having a variable pitch angle. The pitch control mechanism drives the blade to control the pitch angle. The emergency power supply mechanism generates electric power from rotation of the wind turbine rotor and feeds the electric power to the pitch control mechanism, in response to occurrence of an accidental drop of a system voltage of a power grid.

    摘要翻译: 风力涡轮机系统设置有风力涡轮机转子,俯仰控制机构和应急供电机构。 风力涡轮机转子包括具有可变桨距角的叶片。 俯仰控制机构驱动叶片以控制桨距角。 响应于电网的系统电压的意外下降的发生,应急电源机构从风力涡轮机转子的旋转产生电力并将电力馈送到俯仰控制机构。

    Wind turbine generator system and control method of the same
    7.
    发明授权
    Wind turbine generator system and control method of the same 有权
    风力发电机组系统及其控制方法相同

    公开(公告)号:US07982327B2

    公开(公告)日:2011-07-19

    申请号:US12916196

    申请日:2010-10-29

    IPC分类号: F03D9/00 H02P9/00

    摘要: A wind turbine generator system includes: a wind turbine rotor including a blade having a variable pitch angle; a generator driven by the wind turbine rotor; and a control unit controlling the output power of the generator and the pitch angle of the blade in response to the rotational speed of the wind turbine rotor or the generator. The control unit performs a first control in which the output power is controlled in accordance with a predetermined power-rotational speed curve until the rotational speed is increased to reach a predetermined rated rotational speed, and performs a second control in which the output power is controlled to a predetermined rated power when the rotational speed exceeds the rated rotational speed; the control unit is responsive to the pitch angle for maintaining a state of performing the second control is or for switching to a state of performing the first control, when the rotational speed is reduced below the rated rotational speed after the control unit is once placed into the state of performing the second control.

    摘要翻译: 风力涡轮发电机系统包括:风力涡轮机转子,其包括具有可变桨距角的叶片; 由风力涡轮机转子驱动的发电机; 以及控制单元,其响应于风力涡轮机转子或发电机的转速控制发电机的输出功率和叶片的俯仰角。 控制单元执行第一控制,其中根据预定的功率 - 转速曲线来控制输出功率,直到转速增加达到预定的额定转速,并执行输出功率被控制的第二控制 当转速超过额定转速时达到预定的额定功率; 控制单元响应于俯仰角以保持执行第二控制的状态,或者为了切换到执行第一控制的状态,当控制单元一旦被放置到转速之后,当转速降低到额定转速以下时 执行第二控制的状态。

    Wind power generator system
    9.
    发明申请
    Wind power generator system 有权
    风力发电系统

    公开(公告)号:US20100237618A1

    公开(公告)日:2010-09-23

    申请号:US12801133

    申请日:2010-05-25

    IPC分类号: F03D7/00 F03D9/00

    摘要: A wind power generator system includes a windmill rotor including a blade whose pitch angle is variable; a generator driven by the windmill rotor; and a control unit controlling output power of the generator and the pitch angle of the blade. The control unit performs a first control in which the output power is controlled in accordance with a predetermined power-rotational speed curve until the rotational speed is increased to reach a predetermined rated rotational speed, and a second control in which the output power is controlled to a predetermined rated power when the rotational speed exceeds the rated rotational speed. The control unit is responsive to the pitch angle for maintaining the second control or for switching to the first control, when the rotational speed is reduced below the rated rotational speed after the control unit is once placed into the state of performing the second control.

    摘要翻译: 风力发电机系统包括风车转子,其包括桨距角可变的叶片; 由风车转子驱动的发电机; 以及控制发电机的输出功率和叶片的俯仰角的控制单元。 控制单元执行第一控制,其中根据预定的功率 - 转速曲线来控制输出功率,直到旋转速度增加到达预定的额定转速为止,以及第二控制,其中输出功率被控制到 当转速超过额定转速时,预定的额定功率。 当控制单元一旦被置于执行第二控制的状态之后,当转速降低到额定转速以下时,控制单元响应于俯仰角度来维持第二控制或切换到第一控制。