瞬时电压

The appliance used to limit transient over voltage and discharge the surging current, it includes one of non-linear element at least.

用于限制瞬时过电压和泄放电涌电流的电器，它至少包含一个非线性的元件。

The transformation of the instantaneous value symmetry component applied,the positive sequence space vector of fault component of the voltage and current can be derived.

应用瞬时值对称分量变换，可提取电压、电流故障分量的正序空间向量。

This system which can do correlation analysis among vacuum arc imagine, light intensity spectrum density, electron density, vacuum arc voltage, vacuum arc current has a series of properties like synchronous exposure, high sampling speed, good quality with comparatively low price, strong functional software, friendly user's interface and so on.

本课题研制成功了真空电弧动态图象高速微机采集系统，该系统具有同步曝光、采样速度快，性能价格比高，软件功能强，用户界面好等特点，该系统可对瞬时的真空电弧形态，光强密度，电子密度，电弧电压，电弧电流进行相关分析。

When the operator presses the normally closed momentary-contact pushbutton switch, S1, current flows through R1 and R2 to gro

当操作者按下常闭瞬时接触按钮开关S1，电流通过R1和R2流到地，不断提高栅源极电压到足够打开Q1和为IC1和微处理器供能。

When the operator presses the normally closed momentary-contact pushbutton switch, S1, current flows through R1 and R2 to ground, developing sufficient gate-to-source voltage to turn on Q1 and apply power to voltage regulator IC1 and the microprocessor.

当操作者按下常闭瞬时接触按钮开关S1，电流通过R1和R2流到地，不断提高栅源极电压到足够打开Q1和为IC1和微处理器供能。

When the operator presses the normally closed momentary-contact pushbutton switch, S1, current flows through R1 and R2 to gro und, developing sufficient gate-to-source voltage to turn on Q1 and apply power to voltage regulator IC1 and the microprocessor.

当操作者按下常闭瞬时接触按钮开关S1，电流通过R1和R2流到地，不断提高栅源极电压到足够打开Q1和为IC1和微处理器供能。

Unlike most of the existing schemes, this paper presented a novel quasi direct power control method for PWM rectifier in stationary frame based on instantaneous power theory.

通过分析电压型PWM整流器的瞬时功率，在两相静止坐标系下提出一种新型的准直接功率控制策略。

The control signals of the PWM rectifier are obtained by comparing the current of AC side with triangular wave (or saw-tooth wave) directly, which can implement the steadiness of the voltage of DC side and unit capacity factor of the system. At the same time, harmonic component of the system is abstracted through Instant Reactive Power Method, which can be smoothed by Integrated Learning Boost Converter Control.

本文采用重复学习Boost变换技术，利用滑模变结构控制技术对单相PWM整流器恒频Boost变换进行了分析，提出将交流侧电流直接与三角波相比较得到开关控制信号的方法，实现直流电压恒定不变及系统单位功率因数；同时，利用瞬时无功功率法分析系统谐波，并在谐波域内使用重复学习的控制方法，结合Boost变换技术，有效滤除系统谐波有功电流。

When the contacts are connected into direct circuit, we can judge whether the contacts are open or not through analyzing the voltage instantaneous values across the two contacts.

当有触点电器的触头接入直流电路中时，可通过触头两端电压瞬时值来判断它是打开还是闭合。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。