A zero-sequence component imposed vector control system of induction machine based on three-level NPC(Neutral Point Clamped) inverter is proposed,which adopts direct rotor-flux-oriented vector control mode.
提出一种基于三电平中点箝位(NPC)逆变器的零序分量注入型感应电动机矢量控制方案。
Because there is no need for acquiring the zero-sequence component,this principle can eliminate the effect of zero-sequence mutual inductance between coupling lines.
由于该方法中没有用到线路两端的零序分量,消除掉耦合线路之间零序互感对测距的影响。
The new scheme uses zero sequence components as operation component and negative sequence components as restraint component to discriminate whether the fault is in the internal or external zone.
提出一种用零序分量做动作量,负序分量做制动量的综合序分量接地距离继电器。
Zero-Sequence Signal of Space Vector Modulation for Three-Level Neutral-Point-Clamped Inverter Based on Vector Diagram Partition
基于矢量分区的三电平SVPWM模式零序分量分析
Object Oriented Optimal Control Method for Three-Level PWM Rectifier by Zero-Sequence Voltage Injection
基于零序分量注入的三电平PWM整流器目标优化控制
Study on Zero-sequence Distributed Parameter Live Line Measurement of Transmission Lines with Mutual Inductance
互感输电线路零序分布参数带电测量方法研究
Principle Analysis and Algorithm Achievement about Selecting the Ground Wire Based on Power Component of Zero-sequence Current
基于零序电流有功分量的接地选线原理分析及算法实现
To check for( i) correct dimensions,( ii) cosmetic defects or( iii) criteria as specified in checklist/ work procedures/ instruction/ engineering drawings/ customer requirements.
根据质量控制程序，对原材料或分供方提供的零件进行进货检验。
Measurement and research of the zero sequence impedance of the 500 kV transmission line
500kV输电线路零序阻抗的测量及研究
Analysis of zero-sequence protection resist-operation in 110kV line
一起110kV线路零序保护拒动分析
Reason Analysis of a 6kV Zero Protection Misoperation
一起6kV零序保护误动的原因分析
Study and Experiment of Zero-sequence Mutual Inductance Parameter Measurement of Transmission Line;
输电线路零序互感测量方法的研究与实验
Research and Realization on Zero Sequence Phasor Method for On-Line Fault Location in the Distribution Network
配电网在线故障定位零序相量法的研究与实现
Parameters Estimation for Zero-sequence Parameter On-line Measurement of Transmission Lines with Mutual Inductance
互感线路零序参数在线测量中的参数估计
Key words: low current earth electrical network, transient earth fault, zero-sequence energy, energy variation.
关键词：小电流接地电网，间歇性电弧接地故障，零序能量，能量变化。
Analysis and countermeasure of leapfrog trip in main transformer zero-sequence protection
一起主变零序保护越级跳闸事故分析与处理
Mathematical statistic analysis on capacity index of quenching heat treatment process
基于数理统计的零件热处理工序能力分析
Analysis of A Water Feeding Pump Motor Zero Sequence Protection Malfunctioning Accident
一起电厂给水泵电机零序保护事故的分析
Zero-sequence mutual inductance on the ground distance elements impact analysis
零序互感对线路接地距离保护的影响分析
Analyze of Zero Sequence Voltage Protection Scheme for Shunt Capacitor Bank
并联电容器零序电压保护的改进方法分析
Analysis of the reason of pilot zero sequence directional protection mal-function and study of negative sequence directional element on parallel double-circuit lines
平行双回线路纵联零序方向误动原因分析及负序功率方向研究