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It is widely interested how to construct an active power filter to suppress the harmonics in three phase four wire system. 三相四线制系统中如何使用有源电力滤波器来抑制线路中的谐波，这一问题越来越被人们所重视。
This paper analyses the reason that neutral current is not zero when linear three phase system load connects to three phase four wire system source in Y connection. The resolution is also given. 分析了线性三相对称负载Y联接在对称三相四线制电源时 ;中线电流不为零的原因 ;并给出了解决的方法 .
AC three phase four wire system with neutral earthed 中性点接地的交流三相四线系统
two phase four wire system 双两相四线制
three phase four wire system 三相四线制
A new algorithm for random harmonic current detection based on ip-iq principle without phase lock loop in three phase four wire system 三相四线制任意次谐波电流的无锁相环ip-iq检测新方法
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A two wire SYSTEM then requires two twisted pair, and a four wire SYSTEM requires three twisted pair. 一个二线制系统两个双绞双绞线对，一个四线制系统需要三个双绞线对。
three - phase four - wire system 三相四线
Phase four wire active power filter with one 基于单周控制的三相四线制有源电力滤波器
Main Circuit Structure Type and Control of The Active Power Filter Use For Three Phase Four Wire 三相四线制有源电力滤波器主电路的结构形式与控制
Three phase four wire couper 三相四线耦合器
The principle and application research of supercritical fluid extraction,aqueous tow phase extraction,and etc.new techniques is summarized. 概述了超临界流体萃取、双水相萃取等各种新型技术的原理和应用研究情况。
three-phase four wire system [电] 三相四线系统
Stop it! You're killing me! I think I just moved on to Phase Four! 别说了!你们杀掉我吧!我想我就要到达第四阶段了!
Three phase four wire plugs 三相四线插头
three phase four wire 三相四线制
Figure 1 illustrates the concept of a multiplex wiring system. 图一表明多路传输接线系统的原理。
A line of communication between two points in a telephone or similar wired system. 电讯线在电话或相类似的有线系统中两端之间的通讯线路
The structure and the component of an automotive electronic parking brake(EPB) by wire system are introduced. 论述了一种汽车线控驻车制动系统的基本结构、组成及功能。