磁芯采用高频脉冲电流励磁，信号处理电路由峰值检波、低通滤波及差动电路构成。
The toroidal core was excited by sharp pulse current. The sensor circuit is composed of peak value detector, Butterworth low-pass filter and differential amplifier.
本文介绍了国内现有的典型低励失磁保护判据，分析了现有判据存在的一些问题。
It introduces the domestic existing partial or total loss of excitation protection criterion, analyzed the problem of existing criterion.
论述励磁系统中设置低励检测限制单元环节对电力系统及发电机安全稳定运行的作用和意义。
This article introduces low-excitation inspection and limiting in excitation system and its role in electric network, safe and steady operation.
为了保证机组正常进相运行，其励磁控制系统中的低励限制单元不仅要按要求投运，而且要正确整定。
In order to assure operating properly in phase lead, the low exciting limit unit in the exciter control system should not only be put into operation as equirement but also be adjusted correctly.
发电机低励失磁故障是一种严重的故障形式，低励失磁保护也是发电机保护的重点和难点。
For synchronous generator, loss of excitation is a serious fault and the corresponding protection often refuse to operate.
应用神经网络识别变励磁电压判据的动作区，提出应用神经网络的发电机低励失磁保护方案。
Then the author uses a three-layer ANN to distinguish excitation-loss fault, and brings forward a scheme of excitation-loss protection using ANN for generator.
介绍ABB公司励磁系统低励限制的定值整定，分析北京热电分公司1号发电机进相运行时的动作情况以及ABB励磁系统低励限制与失磁保护之间的关系。
In this paper, the author introduced the fixed value setting of underexcited limitation in ABB excitation system. And also analyzed the condensive operation of No. 1 generating unit.
该结构设计新颖、构思独特，励磁损耗低，调磁效果显著，具有创新性，已经申请了专利。
This novel design possesses the advantages of small excitation loss and effective field regulation, so the unique idea of this new configuration has applied and granted a patent.
永磁同步电机与其它电机相比具有低转动惯量、高转矩电流比、低噪声、无励磁损耗等一系列的优点。
Compared with other motors, Permanent Magnet Synchronous motor (PMSM) has the advantages of low inertia, high torque-current ratio, low noise, no excitation loss.
灯泡贯流式水轮发电机转子采用悬臂式结构，整个机组安装在水里，机组转速低，磁极对数多，励磁回路发生接地的故障机率较大，而产生的后果严重。
The rotor of bulb tubular hydro generating unit adopts cantilever structure. The whole machine was installed under water with low rotation speed and more magnetic poles.
目的是解决现有混合励磁开关磁阻电机绕组下线困难，工艺难度较大，槽满率低问 题。
The invention aims to solve problems of the prior hybrid exciting switched reluctance motor, such as difficult winding, great process difficulty and low filling ratio.
“发电厂并网运行安全性评价”要求验证低磁励限制与失磁保护的整定关系，在实际校核中，发现低磁励限制是在P-Q平面进行计算的，而阻抗型失磁保护是在R-X阻抗圆平面进行分析的。
Through check, it is found that minimum excitation limit is calculated in P-Q plane, while impedance type loss-of-field protection is analyzed in R-X plane.
“发电厂并网运行安全性评价”要求验证低磁励限制与失磁保护的整定关系，在实际校核中，发现低磁励限制是在P-Q平面进行计算的，而阻抗型失磁保护是在R-X阻抗圆平面进行分析的。
Through check, it is found that minimum excitation limit is calculated in P-Q plane, while impedance type loss-of-field protection is analyzed in R-X plane.
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