定子

The result shows that not only it can be used to detect the characteristic signal of the rotor bar broken fault with great sensitivity but also be used to evaluate the severity of the fault.

有关方法报道很多[1，2]，利用小波分析对定子电流中所产生的谐波分量进行提取、实现实时、非接触性检测，是一种有效的手段。

Once broken rotor bar fault occurred in induction motors, there would be Edge Frequency components induced in the stator current.

笼型异步电动机一旦发生转子断条故障，在其定子电流中将出现边频分量。

Firstly, a method to estimate the rotor speed, which is based on BP neural network, is introduced in this paper. Secondly, the Park Vector approach is used to monitor and diagnose the inter-turn fault of the stator winding. Finally, this paper studies thoroughly a novel approach to detect rotor bar breaking fault, which is based on the perfect combination of the Hilbert Transform and digital filter.

具体工作如下：采用BP神经网络对异步电动机转子转速进行无速度传感器估计；对定子绕组匝间短路故障，采用派克矢量方法进行监测与诊断；对于转子断条故障，详细介绍了一种新的基于希尔伯特变换与数字滤波的在线监测方法。

Rotor bar fault is one of the ordinary faults in induction motors. The traditional method for the diagnosis of rotor bar fault is checking the (1-2s)f1 component in stator current by FFT.

转子断条是鼠笼型感应电动机常见故障之一，对定子电流进行信号处理，根据其中(1-2s)f1特征频率的分量，可以方便地进行故障的诊断。

The conjunct fault, which broken rotor bar and stator inter-turn short circuit fault occur simultaneously, has been studied in this paper based on multi-loop model of squirrel cage induction motor.

针对笼型异步电动机转子断条与定子绕组匝间短路双重故障进行了仿真研究。

The adaptive filter approach, the Park transform approach,the Hilbert transform approach and the instantaneous power approach are usually utilized to detect the rotor bar breaking fault on-1ine.

针对异步电动机轴承故障，本文就基于振动信号分析和定子电流信号分析的轴承故障检测方法分别进行了讨论。

The necessity and the application of over current protection during start-up course are discussed. gas turbine generator ; start-up with varied frequency ; SFC ; overcurrent with protection low frequency ; relay protection

此外，还有一种观点认为：在变频起动过程中如果发电机定子回路及其引出线发生相间短路，由于变频起动装置内部的可控硅作用，能

The state equation of induction motor with G-type parameters was established and a flux observer was designed based on U-N model. The speed adaptive law was deduced by the theory of Lyapunov stability. A method of model reference adaptive speed estimation based on the full order flux observer was proposed and a scheme of induction motor direct torque control without speed sensor was studied.

建立了基于异步电机G-型参数的状态方程，给出了基于U-N模型的定子磁链观测器；基于李雅普诺夫稳定性理论推出了速度自适应律，给出了基于这种全阶磁链观测器方案的模型参考自适应速度辨识方法。

The normal direction motion of the head block tips is excited by the anti-symmetrical mode.

利用定子的对称和反对称振动模态，在驱动足上形成椭圆振动轨迹。

In this paper, the structure feature, performance principle, control strategy of three-phase induction generator based on static excitation are analyzed and summarized.

本文对带有静止励磁调节器的三相笼型异步发电机的结构特点、工作原理、控制策略进行了系统地分析和总结，对两种定子双绕组笼型异步发电机的工作原理和技术现状分别进行了详细地分析，并分别总结了系统的技术特点。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。