One is power failure, mainly on AC phase-loss consisting of SCR failure, the failure of SCR's trigger circuit , there phases AC switches'failure and the failure of CRDM coil;
对于控制装置故障，主要表现为电源缺相，而导致电源缺相的子事件主要有：可控硅失效、可控硅触发电路失效、三相电源开关失效、电感线圈失效；
An analog signal is composed of four basic components: DC and AC magnitudes, frequency, and phase.
模拟信号由直流和交流分量、频率和相位四部分组成。
The thesis introduces a three phase AC motor's mathematical model in static reference frame and a simulation system for AC motors to develop a vector control inverter system.
针对三相异步电机矢量控制系统的要求，根据在静止坐标系统中异步电机的数学模型，进行了系统仿真。
Using multi loop analysis method, the dynamic characteristics of ac excited generator are analyzed based on phase coordinate.
采用多回路的分析方法，对建立在相坐标下的交流励磁发电机的动态性能进行了分析。
Verify ac line voltage phase and frequency with the controller data plate on the enclosure door prior to connecting ac power.
在连接交流电源之前，请验证交流电压、相位和频率是否与控制装置外壳门参数板上的相应数据相同。
In ac circuits, the current amplitude changes continuously that the concept of phase or time becomes very important.
在交流电路中，电流的幅度是连续不断地变化的，因此相位和时间的概念变得十分重要了。
Regardless of DC or AC magnetic field, the hard phase in weld metal overlay is fine and distributed "the hexagon" in optimum parameters, then hardness and wear extent in weld metal overlay are higher.
在最佳的磁场参数作用下，无论是直流磁场还是交流磁场，堆焊层中硬质相细小且成“六角形”分布，此时堆焊层金属的硬度和磨损量均达到最佳状态。
The steady principle of the inverter with a high frequency pulse AC link and the unipolarity phase shifting control strategy are investigated.
该文深入分析研究了高频脉冲交流环节逆变器稳态原理特性与单极性移相控制策略。
On the basis of the mathematical model of AC induction motor in two phase axis system, the static measurement of electrical parameter for AC motor is completed using pulse voltage and pulse current.
根据交流感应电动机在两相静止坐标系上的数学模型，采用脉冲电流法、脉冲电压法实现了对交流电动机电气参数的静态测试。
This paper provides the major results of research for the automatic phase balance of AC bridge.
本文提供了关于电桥相位自动平衡研究的主要结果。
By using a double phase lock in amplifier to measure the AC strain, the measurement error can be decreased to 0.4% of the total measurement range.
如果使用双相位锁相放大器测量交变的被测量，误差将减小到全量程的0.4%以内。
When added to the ac voltage across it and the chip frequency of the resonant frequency of the phase are equal, the maximum energy output, sensitivity is highest.
当加到它两端的交流电压的频率和晶片的共振频率相相等时，输出的能量最大，灵敏度也最高。
The designed installation is mainly used in synthetic protection of small AC motor. It has the functions of phase failure protection and overload short protection.
本设计装置主要用于中小型交流电动机的综合保护，它具有断相、过载短路保护功能。
SVC(TND)SERIES single phase high precision full automatic ac voltage regulator composable of contact auto voltage regulator, servo motor automatic control circuit etc.
系列单相高精度全自动交流稳压器，由接触式自耦调压伺服式电动机、自动控制电路等组成。
The broad application of AC three - phase asynchronous motor has put higher requirements to the starting of motors.
交流三相异步电动机的广泛使用，对电动机的启动提出了越来越高的要求。
Firstly, based on the selecting of trigger methods' and ascertaining of the phase shift range of ac voltage-regulate soft starter, reliability of each trigger method is researched.
首先，从触发方案选择和移相范围的确定两方面出发，研究了各触发方案的可靠性。
A new static phase shifter based on PWM AC controller is presented in this paper.
介绍一种基于脉冲宽度调制(PWM)交流控制技术的新型静止移相器。
For avoiding the math models of three-phase AC electromotor and frequency inverter, adopt the simple similarity of ascending curve method to ensure the math models of every loop.
为避开三相交流异步电动机和变频器的数学模型，利用飞升曲线法简单近似确定各环节的数学模型。
Electrical products which have LCD time counter, Layer sensor, Three-phase AC fault protection relay and so on.
其中电器类产品有液晶显示计时计数器、平层感应器、断相错相三相交流保护继电器等等。
The principle of pure digital PWM of the three-phase AC motor is analyzed.
分析了三相交流电机全数字脉宽调制的原理。
This paper researches the testing requirement of voltage and current when relay closed or opened if the relay loaded AC single phase separate step motor.
本文研究交流单相异步电动机作为继电器负载时，继电器闭合与分断时电压与电流的试验条件。
Based on the need to develop and test the products, a single phase DSPbasedprogrammable AC power supply is designed.
基于产品研发和测试的需要，本课题设计了一种单相可编程交流电源。
The characteristic and application conditions of three-phase ac intelligent thyristor power module (ITPM) and load characteristic of klystron are presented.
简要叙述了三相交流晶闸管智能模块(ITPM)的性能特点、应用情况以及速调管的负载特性。
A circuit topology family of inverters with high frequency pulse AC link and a double polarities phase-shifting control strategy are proposed and deeply investigated.
提出并深入研究了高频脉冲交流环节逆变器电路拓扑族及其双极性移相控制策略。
The shift trigger pulse of the thyristor trigger circuit with integration amplifier is generated by comparing directly principle of three-phase AC and shift-phase control voltage.
该晶闸管触发器采用集成运数放大器，移相触发脉冲的形成是根据三相交流电的各相与移相控制电压直接比较原理实现的。
With its high maturity three-phase ac drive technology has become the standard for practically all new vehicles.
交流电传动技术的不断成熟，使其真正成为所有新机车动车的标准。
In ac power network, the way of phase-shifting capacitors to compensate reactive power loss is always adopted to raise network power factor.
在交流电网中，常常采用移相电容器补偿无功功率损耗的方法来提高网络的功率因数。
AC brushless synchronous excitation generator is a rotating-armature synchronous generator, which has a module of three-phase rectification bridge.
无刷交流励磁机为旋转电枢式的同步发电机，旋转整流器为模块式的三相整流桥。
AC brushless synchronous excitation generator is a rotating-armature synchronous generator, which has a module of three-phase rectification bridge.
无刷交流励磁机为旋转电枢式的同步发电机，旋转整流器为模块式的三相整流桥。
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