voltage change

The calculation formulae for flicker and relative voltage change which occurs during the continuous operation and the switching-option of wind turbines are given .

介绍了关于并网风电机组电能质量的国际电工标准IEC61400-21，给出了风电机组在持续运行与切换操作期间引起的闪变值和相对电压变动的计算公式。

When output voltage change , we should limit it .

当输出电压变化时，再对其进行限制。

A special voltage change index is proposed to evaluate the effects .

提出专门评价节点电压前后变化的指标。

Study on Capacitance Voltage Change in Permanent Magnet Propulsion System

永磁推进系统中换相电容电压控制规律的研究

But there is a problem of related voltage change for an autotransformer .

而自耦变压器中性点调压则会带来相关调压问题。

Simulation results indicate that V 2 control responses quickly to supply voltage change and load change .

仿真结果表明V2控制方法对于电源电压变化和负载变化都具有很快的响应速度。

It does , however , provide a means of keeping the voltage change per step within per miscible limits .

然而，这确实提供了保持每步电压变化在允许范围内的方法。

Average current control system can response to the input voltage change and adjust system faster through constructing the inductor current feedback loop .

平均电流控制通过引入电感电流构建内反馈环，能更快的反应输入电压变化，从而迅速的调节系统。

In temperature Measurement , turn the resistance change with the relative change of temperature into the voltage change and measure out , thus control the temperature .

在温度测量中，把电阻随温度的相对变化转化为电压变化测量出来，从而进行控温。

It has speed detecting motor , the rotating speed is constant , not affected by material viscosity and the voltage change of power supply .

带有测速发电机，转速恒定，不受物料粘度变化和电压影响。

The discharge mode depends on the voltage change rate ( dV / dt ) at the rising front or the falling front .

两种放电模式的转换主要取决于上升沿或下降沿电压对时间的变化率（dV/dt），当电压变化率较高时，放电工作在辉光模式，反之，放电工作在汤生放电模式。

Through the imposition of external magnetic field to study the weak magnetic field on the solution of dissolved sediment occurred whether the threshold voltage change .

通过施加外加弱磁场来研究磁场对溶液中沉积物发生溶解的电压临界值是否有改变。

In the same voltage change , the change range of the apparent contact angle of mercury on porous silicon increases with the depth of porous silicon .

在电压变化相同的情况下，随着多孔硅深度的增加，接触角的变化会增大。

It of the weakness is to output power smaller , its work frequency with output the variety of electric current and importation electric voltage change more and greatly .

它的缺点是输出功率较小，其工作频率随输出电流和输入电压的变化时变化较大。

Several Oe bias magnetic field needs to be applied along detected field to get high output voltage change and a closure magnetic circuit for high freguency field is needed .

为了提高电压输出变化灵敏度，需要沿被测场方向加几Oe的偏磁场并使高频磁场形成闭合回路。

If use oscillograph to diagnose imitate question mark actually to transmit medium voltage change , can see on oscillograph the graph of similar sound wave shows .

假如用示波器往实际侦测模拟讯号传输中的电压变化，则会在示波器上看到类似声波的图形显示。

The nearer is the underside of the dipole electrodes to the HDPE liner , the more obviously does the detection voltage change .

偶极子下沿距离HDPE膜越近，检测电压变化越明显。

After boron doping in semiconducting ( 8 , 0 ), the total transmission coefficients as functions of energy and bias voltage change from banded structure to separated island .

半导体（8,0）在硼掺杂后，随偏压和能量变化的体系总透射值由原来的带状结构变成离散的岛状。

Once the circuit is broken the amplifier detects the voltage change in this circuit and de-energises the magnetic clutch relay , turning the compressor off .

一旦线路断开，扩大器探测到线路上的压强变化，就会停止电磁离合继电器运行，关闭压缩机。

The study indicates that the influence of CT ′ s second loop break criterion upon transmission line differential protection is weakened greatly by using the criterion based on voltage change detection of two terminals and the protection performance is improved .

分析表明，两侧电压突变检测CT断线判据可以较有效地减少CT断线检测判据对线路差动保护灵敏度的影响，提高保护装置的整体性能。

The results of open circuit voltage change analysis and dissection analysis of the batteries showed that the main cause of spot-corrosion at low temperature was that the sealing was not air-tight resulted in oxygen diffusion into the battery .

对电池的开路电压变化分析和解剖研究的结果表明：封口不严导致氧气侵入电池，是造成低温点蚀的重要原因。

There are low rate of voltage change ( du / dt ) and few harmonic waves in the I / O of Diamond-HV series high-voltage converter , which is suitable for driving the ordinary asynchronous motors and with bright market prospect .

Diamond-HV系列高压变频器输入输出谐波含量低、du/dt小，可直接驱动普通异步电动机。

The results indicate that the average standard deviation between the curve of displacement over voltage change and the fit line achieves 2.795 nm , when the interval is 10 ms , the voltage distance is 0.3 V and the voltage range is in 206 ~ 222 V.

标定结果表明，电压在206~222V范围内，当步进电压为0.3V；时间间隔为10ms时，PZT电压-位移曲线与拟合直线的平均标准差可达到2.795nm。

After got the parameters of electromechanical transient model by PSO , the two models have the similar power reflection to the grid voltage change . ( 3 ) The electromagnetic and electromechanical transient models of wind-power system with doubly fed induction generator ( DFIG ) are studied .

通过仿真对比证实，机电暂态模型与电磁暂态模型在电网电压变化时功率响应特性接近。（3）研究了双馈风力发电系统的电磁暂态与机电暂态建模问题。

Owing to the electrooptical effect of the poled polymer , and the sensitive feature of its refractive index to the resonance obsorption peak of the guided mode , the voltage change can be determined through the measurement of the light intensity when applying voltage on the poled polymer .

通过两层金属膜对极化聚合物加电压，利用聚合物材料电光效应和导模共振吸收峰对聚合物折射率的敏感特性，通过反射光强的测量来确定作用电压的变化值。

Current following control of induction motors by using voltage vector change over

采用电压矢量切换的异步电机电流跟随控制

With a constant voltage , change of the conductance could be calculated by the change of current .

在恒定的电压下，通过检测传感器的电流的变化对其电导的变化量进行衡量。

It can reduce reactive power rush and solve voltage bicker change caused by power active violent change .

减少无功功率的冲击，解决了矿热炉在生产过程中由于功率变化剧烈而引起的电压闪变。

The controllable polymer fiber taper is investigated , namely piezoelectric ceramic ring used voltage control change diameter of fiber taper to less adjust angle .

提出可控的光纤光锥即利用电压控制压电陶瓷环使光锥直径变化，来进行角度的微调。

When a step change in firing angle occurs the zero crossing of the capacitor voltage will change suddenly and the subsequent electromagnetic transients appearing in the TCSC will make the conduction angle not to reach the desired value instantaneously .

当晶闸管触发角发生阶跃时，由于TCSC电路固有的电磁暂态特性，使得电容电压过零点发生偏移，因此导通角不会立刻达到预定目标值。