三相交流电

公共直流母线技术主要由整流单元和逆变单元组成，三相交流电经过整流单元以后，变成一定功率的直流电，再经过逆变单元变成频率和电压可调的交流电源，用来控制交流电机的速度。

Common DC bus is mainly composed of rectification and inverter unit , with which three-phase alternating current becoming into fixed power direct current , then direct current is again converted into frequency and voltage adjustable alternating current by inverter to control motor speed .

本文介绍了由三相交流电产生的行波磁场为原理做成的磁分离器。

In this paper , electromagnetic separator in which the travelling wave field is generated by three-phase alternating current , is introduced .

论述了基于DSP的测量三相交流电能的基本原理。

This paper discusses basic theory of measuring threephase AC electric energy based on DSP .

基于MSP430在三相交流电监测系统中的应用

Application of MSP430-based on Three-phase Electric Power Monitor System

采用三次谐波励磁的同步发电机，通过AVR电路产生稳定的380V三相交流电，可以带动打磨机、空气压缩机等功率较大的电动工具；

It can generate a steady 380 V three phase alternating current through an AVR circuit , and can drive heavy electric tools such as polisher , air compressor and so on .

此外，发电机提供的380V三相交流电，作为辅助电源可带动打磨机、空气压缩机等电动工具。

In addition , the generator can provide a steady 380V three-phase alternating-current , which can drive heavy load tools such as a polishes an air-compressor and so on .

一种获得低压三相交流电的简易方法

A simple method for getting low - voltage tricritical alternating current

三相交流电相序的逻辑判别及其应用

Logical Decision of Three-Phase AC Phase Sequence and Its Application

三相交流电Y形连接的不对称计算

Calculate bout unsymmetrical Three-phase Alternating current of Y-shaped join

三相交流电相序、缺相检测保护电路设计

Three-phase AC phase sequence , with lack of protection of the detection circuit

基于单片机的三相交流电监测系统

Monitor System for 3-phase AC based on Single Unite

单片机三相交流电断相报警器

SCM three - phase AC phase breaking alarm

飞机三相交流电计算机检测系统

Computer Test System for Aircraft Three-phase Alternating Current

数字式工频三相交流电参数仪

Digital Industrial-frequency Three-phase Alternating Current Parameters Instrument

将对称三相交流电加载在实验小室上，便可得到旋转磁场。

It can be obtained rotating magnetic field when symmetrical three-phase AC is loaded in the experimental chamber .

文章所介绍的测量方法适用于采用Y形接法的各种电机三相交流电参数测试。

The method presented in this paper is suitable for measurements of AC parameters of all motors that in Y mode connections .

三相交流电的电参数的计算和监测对于实现电力系统高效、安全、经济的运行是很重要的。

To realize high efficient , safe , economic operation of power system , it is very important to calculate and monitor three-phase ac electric parameter .

该晶闸管触发器采用集成运数放大器，移相触发脉冲的形成是根据三相交流电的各相与移相控制电压直接比较原理实现的。

The shift trigger pulse of the thyristor trigger circuit with integration amplifier is generated by comparing directly principle of three-phase AC and shift-phase control voltage .

励磁电机的转子电枢产生的三相交流电通过旋转整流器变成直流，给主发电机励磁。

The three phase AC current generated by excitation generator is transformed to DC current and then pass it to main generator as its excitation current .

电路原理及实验考试改革的一次实践&将单相交流电转变为三相交流电的研究

A Practice in the Exam Reform of " Circuit Theory and Experiment " & A project concerning on how to convert a single-phase AC source to three-phase one

高压直流输电是将三相交流电通过换流站整流变成直流电，然后通过直流输电线路送往另一个换流站逆变成三相交流电的输电方式。

HVDC transmission is three-phase ac converter will through rectifier into d , and then through the dc transmission lines to another into the ac inverter three-phase converter transmission mode .

电力变换电路由硬件电路实现，可将发电机输出的不稳定的三相交流电转换为电压恒定的直流电，供电子防滑器直接使用及为铅酸蓄电池充电。

The former can convert the unstable three-phase alternating current output of the generator into constant direct voltage , which will be used by the anti-skid device and the lead-acid battery .

根据三相交流电彼此相位相差120°的原理，提出了一种新的三相移相触发设计方案，叙述了它的工作原理及接线方式。

On the basis of phase difference of 120 degrees for three phases , a new design plan for three phase phase shift triggering is put forward describing its operation principle and wiring .

充电系统整流电路采用恒流恒压智能模块对三相交流电进行整流，利用工控机对其整流输出电压和电流进行精确的控制。

The rectify circuit of charging system adopted constant current and constant voltage intelligent modules to rectify 3-phase AC , the output voltage and current of which can be controlled precisely by computer .

本文以目前电熔镁砂生产行业中应用最广泛的三相交流电熔镁炉电极调节系统为研究背景，分别从机理建模和人工智能方法辨识两方面进行了模型研究和仿真实验。

In this thesis , it is studied in mechanism modeling and artificial intelligent method identification separately , under the background of researching the electrode regulating system of three phase electrical smelting furnace for magnesia which is widely used in electrical smelting magnesia areas .

9033三相工频交流电参数数据采集模块。

Three-phase alternating current parameter data sampling module eda9033 .

采用电力电子器件电子开关控制的有源逆变把直流电能逆变成三相工频交流电能并将其回馈电网，是节能的一项重大技术措施，在工业生产中得到广泛应用。

Active inverter controlled by power electronic switch to reverse the DC power into AC three-phase frequency power , and feedback network . This is a major energy-saving technology , and has been widely used in industrial production .

采用电生磁的原理，给对称三相绕组通以对称三相交流电产生旋转磁场。

According to the principle of electrophysiological magnetic , to electrify symmetrical three-phase winding with symmetrical three-phase alternating current to produce a rotating magnetic field .

三相正弦波信号经功率放大器放大后成为对称三相交流电。

Three-phase sine wave wave signal can be symmetrical three-phase alternating current after power amplifying .

此外，针对三相电网电压相序问题，提出了一种基于同步旋转变换的相序识别方法，并在此基础上，实现了三相交流电相序自适应APF控制。

In addition , this thesis proposed one software phase-sequence identification method based on the synchronous rotation transform and the phase-sequence adaptive control of APF is realized .