公开(公告)号：US20160322165A1

公开(公告)日：2016-11-03

申请号：US14699234

申请日：2015-04-29

Applicant: General Electric Company

Inventor： Stefan Grubic ,  Nathaniel Benedict Hawes ,  Manoj Ramprasad Shah ,  Martin Kin-Fei Lee ,  Rui Zhou ,  Kevin Michael Grace ,  Qin Chen

IPC: H01G7/00

CPC classification number: H01G5/14 ,  H01G5/0136

Abstract: A switched capacitive device includes a stationary portion including a plurality of first electrodes extending at least partially in a longitudinal dimension. Each first electrode has a first substantially active electrode volume. The device also includes a translatable portion including a plurality of second electrodes proximate the plurality of first electrodes. Each second electrode has a second substantially active electrode volume. The first active electrode volume is greater than the second active electrode volume. The second electrodes are translatable with respect to the first electrodes. The second electrodes extend at least partially in the longitudinal dimension. The first electrodes are configured to induce substantially linear motion of the second electrodes in the longitudinal dimension through the use of an electric field induced by at least a portion of the first electrodes.

Abstract translation: 开关电容性装置包括固定部分，其包括至少部分地在纵向尺寸上延伸的多个第一电极。 每个第一电极具有第一基本有效的电极体积。 该装置还包括可平移部分，其包括靠近多个第一电极的多个第二电极。 每个第二电极具有第二基本上活性的电极体积。 第一活性电极体积大于第二活性电极体积。 第二电极可相对于第一电极平移。 第二电极在纵向尺寸上至少部分地延伸。 第一电极被配置为通过使用由至少一部分第一电极引起的电场而在纵向尺寸上引起第二电极的基本线性运动。

公开(公告)号：US20140303913A1

公开(公告)日：2014-10-09

申请号：US13858277

申请日：2013-04-08

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Prabhakar Neti ,  Pinjia Zhang ,  Stefan Grubic

IPC: G01R31/34

CPC classification number: G01R31/34 ,  G01R31/343 ,  H02P29/0241

Abstract: A method for detection of rotor bar faults in an electric machine is provided. The method includes acquiring electrical signals from the electric machine that are representative of the operative condition of the machine. The symmetrical components from the electrical signals are eliminated by squaring an instantaneous value of each data point from the electrical signals and summing the squared values. The method further includes the step of eliminating discontinuities in the electrical signals by applying a window function to compute weighted representation of the squared values. Furthermore, the method includes the step of normalizing the weighted representation to obtain spectral information. The faults in the rotor bar are detected by analyzing the spectral information obtained after normalization.

Abstract translation: 提供了一种用于检测电机中转子条故障的方法。 该方法包括从电机获取代表机器操作状态的电信号。 通过从电信号中平均每个数据点的瞬时值并对平方值求和来消除来自电信号的对称分量。 该方法还包括通过应用窗口函数来计算平方值的加权表示来消除电信号中的不连续性的步骤。 此外，该方法包括归一化加权表示以获得光谱信息的步骤。 通过分析归一化后获得的光谱信息来检测转子条中的故障。