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    • 93. 发明申请
    • Wind Turbine with Adjustable Airfoils
    • 具有可调翼型的风力发电机
    • US20110020123A1
    • 2011-01-27
    • US12509236
    • 2009-07-24
    • Donald E. AndersonDaniel W. Christian
    • Donald E. AndersonDaniel W. Christian
    • F03D7/06
    • F03D3/068F03D7/06F05B2260/50F05B2260/70F05B2260/72Y02E10/74
    • The present invention concerns a wind turbine having a plurality of vertically extending airfoils forming a rotating carousel rotating about a central axis thereof. The airfoils pivot about their leading edges to adjust the pitch angle thereof to maximize energy harvest when the airfoils are rotating both in an upwind direction and in a down wind direction. This pivoting movement results from trailing edges of the airfoils being pivotally secured to rigid spokes or cables of a trailing edge hub. An adjustment mechanism is pivotally mounted between a carousel hub and the trailing edge hub and is used to control the separation between a central axis of the trailing edge hub and the axis of rotation of the carousel as they co-rotate. As the carousel rotates, the offset distance between the two axes determines the maximum achievable pitch angle of each airfoil. The airfoils then continually cycle between a positive and negative value of the maximum pitch angle so that each airfoil is at its most desirable pitch angle relative to its position around the carousel and relative to the existing wind direction in order to create maximum lift. A wind direction rudder is secured to the adjustment mechanism to provide for movement thereof resulting in movement of the trailing edge hub as wind direction changes so that the most desirable pitch angle of the airfoils relative to wind direction is maintained.
    • 本发明涉及具有多个垂直延伸的翼型件的风力涡轮机,其形成围绕其中心轴线旋转的旋转转盘。 翼型件围绕其前缘枢转以调节其俯仰角度,以便当翼型件沿逆风方向和向下风向旋转时最大化能量收集。 该枢转运动由翼型件的后缘枢转地固定到后缘轮毂的刚性轮辐或缆索。 调节机构枢转地安装在转盘毂和后缘毂之间,并且用于控制后轮毂的中心轴线与转盘的旋转轴线在它们共同旋转时的间隔。 当圆盘传送带旋转时,两个轴之间的偏移距离决定了每个翼型件的最大可实现桨距角。 翼型件然后在最大俯仰角的正值和负值之间连续循环,使得每个翼型件相对于其绕圆盘传送带的位置和相对于现有的风向是最理想的俯仰角,以便产生最大的升力。 风向舵被固定到调节机构以提供其运动,从而当风向改变时导致后缘毂的移动,使得翼型件相对于风向的最理想的桨距角得以维持。
    • 94. 发明申请
    • ROTOR BLADE ADJUSTMENT DEVICE FOR A WIND TURBINE
    • 用于风力发电机的转子叶片调整装置
    • US20100148506A1
    • 2010-06-17
    • US12600453
    • 2008-05-14
    • Heinz-Hermann Letas
    • Heinz-Hermann Letas
    • H02P9/04H02P7/298
    • F03D7/0224F03D7/0268F05B2260/70F05B2260/76Y02E10/721Y02E10/723
    • A wind turbine includes a rotor having adjustable rotor blades for driving a generator and an adjusting device for the rotor blades provided with an actuator that comprises at least an excitation winding. The adjusting device includes a torque-reducing device that automatically reduces drag torque of the actuator. The torque-reducing device includes a current divider that switches the current through the excitation winding in such a manner that the current flows completely through the excitation coil when the motor is in operation and the current only partly flows through the excitation coil when coasting (slip operation). As a result, when coasting, the magnetization of the excitation winding is reduced about the adjusting device, whereby the increase of the speed torque characteristic curve can be determined, thus improving the ratio of the adjusting device when coasting.
    • 风力涡轮机包括具有用于驱动发电机的可调节转子叶片的转子和用于具有至少包括励磁绕组的致动器的转子叶片的调节装置。 调节装置包括能够自动减小致动器的阻力矩的减速装置。 减速装置包括分流器,其以电流在运行中完全流过励磁线圈的方式切换电流通过励磁绕组,并且当滑行时电流仅部分地流过励磁线圈 操作)。 结果,当惯性滑动时,励磁绕组的磁化随着调节装置而减小,从而可以确定速度转矩特性曲线的增加,从而提高了惯性滑行时调节装置的比例。
    • 96. 发明申请
    • METHOD FOR OPERATING A WIND ENERGY PLANT AND WIND ENERGY PLANT
    • 风力发电厂和风能发电厂的运行方法
    • US20090212566A1
    • 2009-08-27
    • US12104099
    • 2008-04-16
    • Ulrich HarmsWolfgang KabatzkeMark Jurkat
    • Ulrich HarmsWolfgang KabatzkeMark Jurkat
    • F03D7/04F03D9/00H02P9/04
    • F03D7/043F03D7/0224F03D7/0276F03D7/028F05B2260/70F05B2270/1011F05B2270/1014F05B2270/1071F05B2270/327Y02E10/723
    • The invention relates to a method for operating a wind energy plant, the wind energy plant having a rotor with at least one rotor blade which has an adjustable pitch angle, the wind energy plant having a generator coupled to the rotor, and a regulation means which, if a there is a deviation of the rotation speed of the generator or rotor from a rotation speed set point, adjusts the pitch angle of the at least one rotor blade such that the rotation speed set point is reached again, wherein an electrical quantity provided by the wind energy plant by means of a generator and fed into a grid is reduced to a predetermined value in a short time by a reduction of a preset value for the generator, wherein prior to the regulation means noticing a deviation of the rotation speed of the rotor or generator from the rotation speed set point effected by the reduction of the preset value, an adjustment of the at least one rotor blade to a new pitch angle is initiated, wherein at the new pitch angle the rotation speed of the rotor or the generator reaches the rotation speed set point at the reduced electrical quantity and the current wind speed. In addition, the invention relates to a wind energy plant.
    • 本发明涉及一种用于操作风力发电设备的方法,所述风力发电设备具有转子,所述转子具有至少一个转子叶片,所述转子叶片具有可调节的俯仰角,所述风力发电设备具有耦合到转子的发电机,以及调节装置, 如果发电机或转子的旋转速度偏离转速设定点,则调整至少一个转子叶片的俯仰角,使得再次达到转速设定值,其中提供的电量 通过发电机的风力发电机通过发电机的预设值的减少而在短时间内被减少到预定值,其中在调节装置之前注意到转速的偏差 通过减小预设值来实现来自转速设定点的转子或发电机,开始将至少一个转子叶片调节到新的俯仰角,其中在新的桨距角t 转子或发电机的转速在减小的电量和当前的风速下达到转速设定值。 此外,本发明涉及一种风力发电设备。