三相电流

江陵换流站GIS串内三相电流不平衡的原因分析及故障处理

Cause Analysis and Fault Measures of Three Phase Current Unbalance at GIS in Jiangling Convert Station

三相电流型Z源交流-交流变流器电路

Three-Phase Current - Fed Z - Source AC - AC Converter

基于改进空间矢量脉宽调制的三相电流型PWM整流器研究

Research for Three-Phase Current-Source PWM Rectifier Based on Improved Space-Vector Pulse-Width Modulation

基于FPGA三相电流型逆变器SVPWM控制研究

The Study of Three-Phase SVPWM Controlled Current Type Inverter based FPGA

基于DSP和CPLD的三相电流源型变流器

3-phase current-source-rectifier based on DSP and CPLD

提出了三相电流型PWM整流器的一种新型实用的功率因数控制方法。

A new and practical power factor control strategy for three phase PWM current source rectifier was proposed .

大功率三相电流型晶闸管SVPWM整流器多桥并联技术

Multi-Bridge Parallel Technique of Three-Phase High Power SVPWM SCR-CSR

研究了一种新的三相电流型PWM整流器（CSR）的拓扑结构及其多桥并联技术。

A new three-phase current source rectifier ( CSR ) topology and its multi-bridge parallel technique are studied in the paper .

该仪器可以带电测量电潜泵的三相电流、三相电压、有功功率和功率因数等参数，采用LCD点阵液晶显示屏显示，掉电数据保存，测量精度0.5级。

This instrument can measure such parameters as three-phase current , three-phase voltage , active power and power factor of an ESP well .

最后根据ABC三相电流极性判断出需补偿的电压空间矢量，从而更改相应DSP比较寄存器的值。

Finally , voltage space vector needed to be compensated can be judged according to polarities of three-phase currents , moreover the values of compare registers in DSP are changed .

仿真并网系统正常、孤岛、短路等11种运行状态，采集各状态下并网点的三相电流信号，并在Matlab中实现特征提取。

The simulation simulates eleven kinds of operating status , such as normal , islanding and a variety of short circuits . Collect the three-phase current signals of each state and extract the feature in Matlab .

讨论了基于神经网络对电弧炉电极进行智能控制的方法，运用神经网络的BP、RBF以及双隐层BP模型，分别对电弧炉电极的单相电流及三相电流进行了分析和仿真。

The method of intelligent control based on neural network is applied in electrode current of arc furnace . The electrode current is analyzed and simulated by the BP and RBF models of neural network .

提出了一种三相电流法测量阻性电流，并在理论分析的基础上，研制了MOA带电测量装置。

A three-phase current method is presented to measure resistive current , based on which an electrified measuring instrument for MOA is developed .

通过测量用户低压侧三相电流相量，通过特定的算法处理，准确判定用户高计TA的实际变比是否与铭牌一致。

Through measuring three-phase current of low voltage at user side and handling by specific algorithm , TA ratio of HV measuring can be accurately judged whether is consistent with data plate .

对电网不平衡条件下的三相电流型PWM整流器进行了研究，提出了一种在电网电压不平衡状态下，抑制三相电流型PWM整流器网侧电流负序分量的补偿方法。

The three-phase current-mode PWM rectifier under the conditions of power imbalances has been studied , and a compensation method of three-phase current curb-side PWM rectifier current net negative sequence components in the state of voltage unbalanced .

随着超导技术和电力电子技术的发展，三相电流源型变流器（CSC）在超导储能领域依然占有主导地位。

With the development of the technology of superconducting and power electronics , three-phase current source converter remains its dominant status in superconducting magnetic energy storage field .

新一代智能电动机综合保护器采用高性能单片微机以及模似、数字电路和三相电流、三相电压、漏电三种互感器，LCD显示；

The new intelligent and integrated protection device for motor is developed , which used the high-performance MCU , analog and digital circuit , LCD display , current transducer , voltage transducer and leakage current transducer , and so on .

利用该装置进行了模拟阻性电流增大的实验，结果表明，三相电流法能够正确测量出阻性电流的增量，可以方便地对MOA早期故障进行判断。

An experiment of simulative resistive current increase is carried out . The results show that the three-phase current method can measure the increment of resistive current correctly , which easies the detection of early MOA fault .

该文针对永磁同步电机的矢量控制系统，详细分析了空间矢量PWM中死区效应对输出电压的影响，并结合空间矢量图，讨论了输出电压矢量位置与三相电流方向的关系。

As for a vector control system of a permanent magnet synchronous motor , this paper analyzes the influence of dead-time on output voltage in detail , and discusses the relationship between the position of output voltage vector and the direction of three-phase current in a space vector figure .

KIWA综合节电装置以其独特结构形式，通过调整三相电流和电压的平衡，消除电网高次谐波。

KIWA synthetic power saver with his unique structure form eliminates higher harmonic of the electrical network by way of the balance in adjusting three-phase current and voltage .

提出了基于改进ip-iq法的补偿指令电流检测算法，该算法能实时地检测出三相电流的基波正序有功分量，提高了补偿指令电流检测的速度和精度。

An improved I p - iq algorithm for detecting compensation reference current is mentioned . It can real-timely decompose the fundamental positive sequence active component of three-phase current , witch improves the speed and accuracy of compensation reference current detection .

该方法应用一个多层前馈神经网络（MLFNN），对当前采样时刻和上一采样时刻的三相电流采样值进行分析计算，得出三相电流的谐波分量。

It analyses and calculates the three-phase current of current sample time and of the last by a multi-layer feedforward neural network ( MLFNN ), then the harmonic components of the three-phase current are got .

仿真结果表明，在Boost-buck变换器之前增加滤波器，并不能改善系统直流输出电压脉动情况，反而会造成发电机三相电流谐波含量增大，对发电机产生不利的影响。

Simulation results show that the ripple cannot be improved if the filter is added to the system in front of the boost-buck converter . The filter produces more content of harmonic currents in the generator , which can make bad effect on the generator .

三相电流型整流器的空间矢量调制技术研究

Study of Space Vector Modulation for Three Phase Current Rectifier

基于数字信号处理器与复杂可编程逻辑器件的三相电流源型超导储能不间断电源及其控制策略

3-Phase Current-source SMES-UPS and Its Control Strategies Based on DSP and CPLD

大型电机应该使用三相电流。

Three-phase current should be used for large motors .

电热前床三相电流平衡智能集成控制策略

Integrated intelligent control scheme for three-phase current balance in electric heating fore well

基于可变电抗的矿热炉三相电流平衡技术

The three phases current balance of smelting electric furnace based on variable reactor

基于巨磁阻的电力系统三相电流测量及其应用

Three-phase current measurement in power system based on GMR

不完全换位引起的输电线路三相电流不平衡分析

Unbalance Analysis for Three Phase Current in Power Ling Caused by Incomplete Transposition