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汉语拼音：lì cí

采用并联电阻分流磁场线圈中的电流，或采用在磁场线圈上抽头的方法，改变电枢电流和磁场强度间的关系，以控制电动机车或柴油电动机车的串激电动机的速度。

• In the paper, three field circuit ground protections with low frequency voltage injection which have been used are introduced.

  文章对国内目前已经投入运行的三种低频电压注入式励磁回路接地保护进行介绍。

• it offers 24-bit resolution, an on- chip programmable gain amplifier and a pair of matched RTD excitation current sources.

  它提供24位分辨率，一个在芯片可编程式获取放大器和一对协调的RTD励磁电流来源。

• As an application of the proposed method, the excitation control of a three-node power system with nonlinear load is discussed.

  作为该算法的应用，讨论了带有非线性负荷的三节点电力系统的励磁控制问题，设计了非线性励磁控制器。

• The failure of crystal brake-tube in the static excitation system is one of common failures. The reasons of causing such failure are many.

  静止励磁系统中晶闸管损坏是其常见故障之一，但造成晶闸管损坏的原因很多。

• A synchronous generators cloud model excitation controller and a cloud model valve controller are designed respectively.

  分别设计了同步发电机云模型励磁控制器与云模型汽门控制器。

• Then carry out a research and analysis to excitation system and give the mathematical model of excitation system.

  本文随后对励磁系统进行了研究分析，给出了励磁系统的数学模型。

• So far, the core problem of transformer differential protection is still how to precisely identify the magnetizing inrush current.

  迄今，变压器差动保护的核心题目仍然是如何正确识别励磁涌流。

• This scheme removes the errors associated with dc excitation at the expense of a more complex design.

  这个配置消除相关的误差，而直流励磁要花费更复杂的设计。

• Synchronous generator excitation system is an important part, directly affect the operating characteristics of generating units.

  励磁系统是同步发电机组的重要组成部分，直接影响到发电机组的运行特性。