查询词典 excitation voltage

Based on varying process of generator terminal parameters after excitation fault, shortages of excitation protective principle of static stability boundary and asynchronous impedance boundary are analyzed. It proposed that excitation fault research relates to large-disturbance stability. Because dynamic power-angle character of generator after excitation fault is non-sinusoidal, there are differences between dynamic power-angle character and static state power-angle character. So it isn't ideal to protective operation result based on small-disturbance stability and static stability boundary criterion. At the same time, it proposed that asynchronous boundary impedance criterion is a constant reactive power circle moving adown j Xd′. It can ensure complete loss-of-excitation generator measuring impedance enter into the circle, but can't ensure the other condition measuring impedance including impossible losing synchronism enter. So loss-of-excitation protection would be maloperation when system voltage drops short and recovers or generator rejects load.③Based on stability principle, it puts forward setting conditions and calculation method of generator loss-of-excitation protection by direct measuring power-angle.

以励磁故障后发电机端的相关参数的变化为基础，通过对以静稳定边界和异步阻抗边界作判据的两类三种现行励磁保护在原理上存在的缺陷分析，发现：励磁故障是一个大干扰稳定性问题，励磁故障后的发电机的动态功角特性与静态功角特性有很大的差异，已远非正弦曲线，因此基于小干扰稳定性原理、以静稳定边界作判据的保护必然动作不理想；异步边界阻抗判据是一个下移j Xd′的等无功阻抗圆，它可以保证完全失磁后的发电机测量阻抗能进入该阻抗圆，但不能保证完全失磁之外的其它状态不会进入该阻抗圆，因此在系统电压短时下降或发电机突然甩负荷等情况下可能启动该保护使之误动。

In Figure 8, transistors Q1 to Q4 perform the switching of the excitation voltage.

在图8，晶体管Q1到Q4的激励电压的运行转换

The results give experimental support to the implementation of low excitation voltage portable ultrasound systems.

编码激励实验结果为实现低发射电压的便携式超声诊断系统提供了实验基础。

For synchronous switching, it provides the logic control signals for switching the excitation voltage.

为了同步转换，它提供逻辑控制信号为转换成励磁电压

And the excitation voltage and output were also fed through the selector switch to the digital voltmeter.

其激励电压和输出也通过选择开关接到数字电压表上。

The three working pattern of he rotating-rectifier influence on the main generator excitation voltage.

文中详细说明了旋转整流器的三种工作模态，及旋转整流器对主发电机励磁电压的影响。

With feedback remote sensing, you connect extra sense wires to the point where the excitation voltage wires connect to the bridge circuit.

遥感与反馈，你连多余的意义在线路电压电线连接，激发桥电路。

When applied to precision measurement, it requires the excitation voltage be well controlled to keep the vibrating signal in the linear region of the curve.

微谐振器二次谐波响应的分析是一个创新，提供了微谐振器应用时消除二次谐波影响的完善途径。

Limit induced bifurcation by generator excitation voltage limit was studied, the critical limit was presented and a mechanism of LIB was proposed.

研究由于发电机励磁电压限制导致的极限诱导分岔，发现临界限值的存在并提出一种极限诱导分岔的机理解释。

The high resistance of the completion resistors helps minimize the current draw from the excitation voltage.

高电阻最小电阻帮助解决当前从中励磁电压。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。