会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明申请
    • MONITORING OF BLADE FREQUENCIES OF A WIND TURBINE
    • 风力涡轮机叶片风速的监测
    • WO2009021900A1
    • 2009-02-19
    • PCT/EP2008/060385
    • 2008-08-07
    • SIEMENS AKTIENGESELLSCHAFTEGEDAL, PerSTIESDAL, Henrik
    • EGEDAL, PerSTIESDAL, Henrik
    • G05B23/02
    • G05B23/0237F03D17/00F05B2270/807G01H1/006
    • The present invention relates to a method for monitoring blade frequencies of a wind turbine and a monitoring system for performing the method. By the invention an accelerometer is attached in the center of the rotating hub of a wind turbine and thereby measuring the vibrations of the hub. To extract the vibration signals originating from each blade, the vibration signals are combined with the measuring signals from the azimuth angle sensor (rotating angle), which is normally used for pitch control. Alternatively the azimuth angle is found by using the measured accelerations in two directions representing the centrifugal forces and vibrative forces of the hub in these directions and feeding these signals into a phase locked loop (PLL) unit which establishes a phase of the rotating hub representing the azimuth angle. To further extract each blade frequency a Fast Fourier Transformation (FFT) is used on the signals from the accelerometer. To further monitor a severe and alarming change in each blade frequency each blade frequency is compared to the other blade frequencies and an alarm is set if a given level is reached and the wind turbine is stopped.
    • 本发明涉及一种用于监视风力涡轮机的叶片频率的方法和用于执行该方法的监视系统。 通过本发明,加速度计附接在风力涡轮机的旋转轮毂的中心,从而测量轮毂的振动。 为了提取源自每个叶片的振动信号,振动信号与通常用于俯仰控制的方位角传感器(旋转角度)的测量信号组合。 或者,通过使用表示轮毂在这些方向上的离心力和振动力的两个方向上测量的加速度来找到方位角,并将这些信号馈送到锁相环(PLL)单元中,该单元确定了旋转轮毂的相位, 方位角。 为了进一步提取每个叶片频率,对来自加速度计的信号使用快速傅里叶变换(FFT)。 为了进一步监测每个叶片频率的严重和令人震惊的变化,每个叶片频率与其他叶片频率进行比较,并且如果达到给定水平并且风力涡轮机停止,则设置报警。
    • 4. 发明申请
    • METHOD OF ATTACHING A MAGNET TO A ROTOR OR A STATOR OF AN ELECTRICAL MACHINE
    • 将电磁铁连接到电机或电机的定子的方法
    • WO2011107168A1
    • 2011-09-09
    • PCT/EP2010/059399
    • 2010-07-01
    • SIEMENS AKTIENGESELLSCHAFTSTIESDAL, Henrik
    • STIESDAL, Henrik
    • H02K15/03H02K1/27
    • H02K1/28H02K1/274H02K1/278H02K15/03Y02E10/725
    • The invention describes a method of attaching a magnet (1) to a rotor (2) or a stator of an electrical machine, which method comprises the steps of arranging a magnet (1) along a surface of the rotor (2) or stator; arranging a pair of retainers (3A, 3B) one on each side of the magnet (1); enclosing the rotor (2) or stator, magnet (1) and retainers (3A, 3B) in a vacuum bag (5); and performing vacuum evacuation to consolidate the magnet (1) to the retainers (3A, 3B) by means of adhesive (6A, 6B, 6C). The invention further describes a magnet mounting arrangement (8) for a rotor (2) or a stator of an electrical machine. The invention also describes a wind turbine with a generator comprising a rotor (2) and a stator and such a magnet mounting arrangement (8). The invention also describes the use of the inventive method in mounting a plurality of magnets (1) to the rotor (2) of a generator of a wind turbine.
    • 本发明描述了一种将磁体(1)附接到电机的转子(2)或定子的方法,该方法包括沿着转子(2)或定子的表面布置磁体(1)的步骤; 在磁体(1)的每一侧上设置一对保持器(3A,3B); 将转子(2)或定子,磁体(1)和保持器(3A,3B)封装在真空袋(5)中; 并且通过粘合剂(6A,6B,6C)进行真空排气以将磁体(1)固定到保持器(3A,3B)。 本发明还描述了一种用于转子(2)或电机的定子的磁体安装装置(8)。 本发明还描述了具有发电机的风力涡轮机,该发电机包括转子(2)和定子以及这种磁体安装装置(8)。 本发明还描述了将本发明的方法用于将多个磁体(1)安装到风力涡轮机的发电机的转子(2)上的用途。