恒定电流

However, this modulation mode would not prevent the injection of DC current into the grid.

在双极性脉宽调制方式下，全桥逆变器的共模电压恒定，不产生共模电流。

The chip uses a constant frequency, current-mode control scheme to provide excellent line and load regulation.

采用了恒定频率、电流模式的控制结构以提供优秀的电源和负载稳压。

During the work process of electrical screw press, motors loaded with large inertia must alternate between positive and negative rotation frequently, and it is necessary to realize a quick and steady torque output and to avoid an abnormally high temperature rising.

电动螺旋压力机要求电动机在大惯量负载条件下、频繁起动时能够快速实现恒定的转矩输出，同时避免过高的起动电流，这取决于先进的交流调速方法的运用。

Constant primary winding current independent of load level is inherent in the proposed system so that power could be transmitted from power source to load in a stable manner.

额定频率下系统一次侧线圈电流保持恒定而与负载大小无关，保证电能由电源向负载的稳定传输。

The saturation behavior of stress current is studied.

文摘：基于一阶速率方程，讨论了恒定电压应力下应力电流的饱和行为。

The main factor affecting weld quality of spot welding is net voltage fluctuation and the change of secondary loop impedance.

影响点焊电流恒定输出的主要因素是网压波动和二次回路阻抗的变化，二次回路阻抗变化会导致负载功率因数角变化。

C. Sloped+limitting soft starting: the output voltage increase steadily according to starting time.

c。斜坡+限流软起动：输出电压以设定的起动时间平稳上升，电流保持恒定，直至起动完成。

The special tribo-electdc tester with high sliding speed and electric current was developed,which mail working parameters are, current density up to 2.5 A/mm~2, the sliding speed 100 m/s,the load over 500 N (3.2 MPa) and the pulsant strike pressure within 20 N. This testersuccessfully simulates the tribological and electric properties of strip materials. 2, By using the above tester, study on tdbological properties and carrying currentperformances of copper-base powder metallurgy material and metal impregnation carbonmaterial are carded out.

本论文开展的主要研究内容和所取得的成果如下： 1、首次开发了大电流、高速度和重载荷的载流摩擦磨损专用试验机，能够稳定提供恒定交流电流密度2.5 A／mm~2，相对滑动速度100 m／s(12000 r／min)，载荷可达500 N(3.2MPa)，脉动冲击载荷可达20 N，为研究提速接触网和滑板的高速载流摩擦学特性及其机理，以及开发新型高耐磨性、高载流性能滑板材料提供了先进可靠的试验手段(该机已获得一项实用新型专利，ZL 2006 2 0096036.5)。

The channel currents appear quantal in nature, transiting in a seemingly random manner between the"open"and the "closed", and have the characteristic of"all"or"none".

单通道电流信号具有&定量&特性，表现出&全有&和&全无&的特征，为一个个电流幅值高度恒定，持续时间宽度随机变化的矩形波，类似于随机电报信号。

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。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。