查询词典 current converter

This paper describes the screwdown auto-control system of a pilger seamless tube mill which is composed of screwdown motor, frequency converter, PLC and absolute encoder.

本文介绍了由压下电动机、变频器、 PLC 和绝对值编码器构成的周期轧管机的压下自动控制系统。

So the smaller turns ratio of the flyback transformer in the forward-flyback hybrid bi-directional DC-DC converter helps to transfer power with higher efficiency.

文章研究了采用不同的正激、反激变压器匝比对传输功率的分配比例、电流纹波等影响，并进行了试验验证。

An internal two-bit digital to analog converter provides programmability of the output currents.

一个内部2位数字到模拟转换器提供的输出电流的可编程性。

A multi-resonant DC/DC converter, which is very fit for ultra-high frequency applications is analyzed.

分析了一种非常适合工作在超高频下的多谐振DC/DC变换器。

The paper introduces an underfeed winder control system mainly composed of Siemens S7-400 PLC, TP270 hand touch screen, 6SE70 AC converter. It successfully implements all AC drive control for the underfeed winder.

摘 要：介绍了由西门子S7-400 PLC、TP270触摸屏、6SE70变频器组成的下引纸复卷机的控制系统，通过公共直流母线系统和基于PROFIBUS-DP总线的分级控制的应用，实现了下引纸复卷机的全交流传动控制。

Unfortunately, there is inevitably difference in characteristics of the induction motors and converters in a parallel AC drive system, therefore each induction motor as well as converter can not operate at the same working point, some may be overload, some underload.

并联着的各个交流调速系统的负载是不均衡的，这是因为逆变器所带的负载—异步电动机参数及特性不可避免地存在差异，两或多台逆变器作为电源，其等效参数也很难一致，各驱动轮径总存在偏差，因此各台逆变器的输出电流和各台异步电动机的定子电流是不相一致的，有的逆变器、异步电动机可能过载，有的还可能欠载。

Simulation and test results show that the proposed converter can reduce output voltage and implement unit power factor correction, and its dynamic performance is satisfactory.

仿真分析和实验结果均表明，该变换器的输出电压大大降低，可实现单位功率因数校正，具有良好的动态性能。

Reversible PWM converter can realize unit power factor, constant voltage output and bidirectional transformation of energy.

可逆PWM整流器能实现单位功率因数、稳压输出以及能量的双向流动。

1Driving form: speed-regulate of frequency converter + universal shaft coupling + synchronous belt with high accuracy in synchronism, high in mechanism and guarantee in lifetime of the components.

传动型式：变频器调速+万向联轴器+同步带，同步精度高，机械效率高，构件使用寿命保证。

A DC-to-DC converter includes a pulse width modulation circuit cooperating with at least one power switch for supplying power from a source to a load over a range between a lower limit and an upper limit to thereby control an output voltage for the load.

一种直流-直流转换器，包括一个与至少一个的电源开关协作，以在一个上限和下限的范围内由电源向负载供电，从而为负载控制输出电压的脉宽调制电路。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。