瞬时电流

利用焊接质量分析仪采集气体保护焊焊接过程中瞬时电流和电压波形特征，对测的数据进行数学统计，提出电源功率比率指数的概念。

Using transient current and voltage waveforms collected by welding quality analyzer Hannover in gas metal arc welding ( GMAW ) process , the power ratio indices was defined from date math statistical methods .

斩波调速中的瞬时电流微机控制

Microcomputer Control for Transient Current in Chopper Speed Variation

三相电路瞬时电流、功率的分解与Park空间分析

Decomposition of instantaneous current and instantaneous power of three-phase circuits and Park space-domain analysis

它们是基于预测瞬时电流的PWM控制。

They are based on a predictive instantaneous current PWM control .

瞬时电流闭锁电压速断保护整定计算原则

Discussion on Setting Calculation Principle of Current and Voltage Protection

单相光伏并网逆变器瞬时电流检测与补偿控制

Instantaneous Current Detection and Compensation of Single-phase Photovoltaic Grid-connected Inverter

三相系统中非正弦瞬时电流和功率的分解

Decomposition of nonsinusoidal instantaneous currents and power in three-phase systems

瞬时电流周期耐久性试验的实现&对片式熔断器标准的分析

Realization of Durability Test of Instantaneous Current Cycle : Analysis of Plate Fuse Standard

大型铝电解槽瞬时电流效率测定技术的研究

Study on measuring technique of instant current efficiency on large sized Al electrolytic cell

瞬时电流比较型逆变器的研究

Study of Current Transient Value Comparison Inverted

本文介绍基于数据采集的电机运行性能测试系统的设计实现，及其瞬时电流有效值分析算法、测量误差修正方法。

A measurement system based on digital data acquiring for working function of motor is introduced .

但这一方法是把三相瞬时电流变换到α-β两相正交的坐标上经过运算，反变换后来得谐波。

By converting three-phase instantaneous currents to orthogonal two-phase currents , computering and transversing , the method can get harmonic currents .

在总结前人已有的整定计算原则基础上，结合实际工作经验，提出了一种新的瞬时电流闭锁电压速断保护整定计算原则。

Based on the old principles and writers ' experience , a new setting calculation principle for current and voltage protection is proposed .

为了深入了解电弧弧根功率输入过程，从而对侵蚀过程进行合理建模，有必要对触头弧根瞬时电流密度进行测量。

In order to improve the modelling of the erosion process , it is imperative to measure the instantaneous current density on arc root .

最后通过瞬时电流跟踪控制使电机电流跟踪参考电流，完成电机的转矩控制。

The approach of transient current tracing control is implemented in this system to adjust the current in order to control the torque of the motor .

瞬时电流滞环控制技术由于实现简单，响应速度快和具有自然限流等优点而得到广泛地应用。

A hysteresis-band instantaneous current control PWM technique is popularly used because of its simplicity of implementation , fast current control response , and inherent peak current limiting capability .

理论分析和试验结果表明，采用变速切削加工时，电机瞬时电流确有一定程度的波动，但不影响机床电机的正常使用；

The theoretical analysis and experimental results demonstrate that the motor current has some fluctuation in vari-speed cutting process , but it is almost no effect on normal operation of machine tool .

为此，该文深入研究了不同电压空间矢量对直流侧电压平衡的影响，并针对交流传动系统四象限运行的要求，提出了一种基于瞬时电流检测的直流侧电容电压平衡控制方法。

Therefore , the effects of separate voltage space-vectors on the DC-voltage balance are deeply investigated , and a novel DC-voltage balance control method based on the instantaneous current detection is presented in this paper to meet the demands of AC drive four-quadrants operation .

提出了一种用离散傅里叶变换DFT（DiscreteFourierTransform）实现特殊滤波器的瞬时谐波电流的检测方法。

A simple and practical instantaneous harmonic current detecting method is introduced , which realizes a special filter based on DFT ( Discrete Fourier Transform ) .

并对p-q法，d-q法，UPF法和瞬时有功电流法进行了分析和比较。

P-q , d-q , unify power factor ( UPF ) and instantaneous active current ( IAC ) methods are analyzed and compared with each other .

高电压脉冲放电由于其本身的特点，可形成高电压、瞬时大电流，其放电电流的上升时间可小于1ns，便伴随有强电磁辐射，形成静电放电电磁脉冲。

High voltage pulse discharge will cause transient high voltage , large current , and great electromagnetic radiation .

同时，以典型的冲击性负荷为例（如电弧炉等），使用瞬时负荷电流和电压表示的功率平均值补偿算法，设计出一套SVC全数字控制系统。

Meanwhile , SVC digital controlled system is developed based on the typical impact loads ( such as electric arc furnace ) and with the mean power compensating algorithm expressed in current and voltage of the instantaneous load .

XeCl准分子激光器激励电路性能对激光器的输出特性有很大的影响，我实验室自制的XeCl准分子激光器创新性的采用了火花开关控制电路，对瞬时大电流进行控制，取得了满意的效果。

The stimuli circuit of the XeCl excimer laser has a great effect on the output characters of the laser . The spark gap switch was innovative and satisfied used to control the instant high current trigger signal of the XeCl excimer laser which was made by ourselves .

研制了压电陶瓷冲击驱动电源，冲击电压最高为165V，可以输出瞬时大电流驱动压电陶瓷，以达到瞬时冲击的实验效果。

Another power source of impact testing , which can provide the highest output voltage 165V , was also developed . Large transient current can be provided by this power .

利用三维空间矢量检测瞬时畸变电流

Using three-dimensional space vectors to observe the instantaneous distorted current

二是采用最新提出的故障分量瞬时值电流差动算法。

Another is using new differential algorithm based on fault component instantaneous value .

瞬时谐波电流检测方法的动静态特性分析

Analysis of the Static and Dynamic Characters of Instantaneous Harmonic Current Detecting Method

利用经典控制理论的方法建立了串联补偿器的传递函数模型，并且对由瞬时电容电流反馈和输出电压瞬时值反馈构成的双环反馈控制方式进行了动态特性的分析。

The system transfer function model is set up based on the classical control method .

瞬时谐波电流检测的一种新方法

A New Instant Harmonic Current Detecting Method

瞬时值电流控制逆变技术比较

Comparison of Instantaneous Current-Control Inverter Techniques