1) three-phase and four-line slip energy recovering system
三相四线制串级调速系统
1.
A slip energy recovering system with eight pluses exchanged current inverter,a system with rotor-side shortcircuit switch and a novel three-phase and four-line slip energy recovering system are respectively analyzed.
分别分析了一种由八脉冲换流逆变器构成的串级调速系统、一种转子侧加短路开关的串级调速系统、一种新型的三相四线制串级调速系统,分别阐述了它们能提高功率因数的原理。
2) three-phase four-wire system
三相四线制系统
1.
From view of reactive power compensation in three-phase four-wire systems,the authors logically analyze and compare the p-q-r theory with other kinds of instantaneous power theories which are widely applied in power compensation on current detecting algorisms in three-phase four-wire system thoroughly.
为深入分析应用于三相四线制系统的3种瞬时功率理论,由3种瞬时功率的定义出发,利用自由度观点和能量守恒原理,分析了各种瞬时功率理论的各自特点,并利用仿真软件MATLABLE建立了三相四线制带不对称负荷的仿真模型,对比了3种瞬时功率理论的分析结论。
2.
Because of the three-phase four-wire system, i_p-i_q method is improved in this paper.
针对设计目标,本文随后介绍了并联型有源电力滤波器的基本原理,讨论了主电路的构成,提出了两种三相四线制系统的主电路结构,分析了它们的特点及使用场合,确定了本文中系统的主电路拓扑结构,并在此基础上选定了开关器件和主要元件参数。
4) cascade control system
串级调速系统
1.
Modeling and simulating of new three-phase four-wire cascade control system;
新型三相四线制串级调速系统的建模与仿真
2.
Thyristor cascade control system is a low-cost system,but the traditional cascade control system has some shortages,such as a low power factor,serious harmonic pollution etc.
晶闸管串级调速系统是一种廉价、简易的调速系统,但是传统串调系统存在着诸如功率因数低、谐波污染严重等弊端。
5) cascade speed control system
串级调速系统
1.
This paper introduces the double-closed-loop cascade speed control system, expounds the methods for optimizing the parameters of RPM governor and current regulator by using the genetic algorithm, and carries out the simulation analysis.
介绍了双闭环串级调速系统,阐述了利用遗传算法优化转速调节器和电流调节器参数的方法,进行了仿真分析。
2.
The double close-loop cascade speed control system by chopper is designed to suit the demand of electric driving motor system for piercing mill.
介绍斩波式串级调速系统的工作原理,说明其具有较硬的机械特性,适用于穿孔机的周期性短时工作负载。
3.
Firstly, the principle of traditional cascade speed control system is presented in the paper, and power factor of the system are analyzed.
本文首先详述了传统串级调速系统的工作原理,分析了传统串级调速系统功率因数低的原因,并利用MATLAB/SIMULINK搭建了传统串级调速系统的仿真模型,得到系统功率因数随触发角变化的曲线;其次,介绍了斩波式串级调速系统的工作原理,提出斩波式串级调速系统功率因数分析计算的基本方法,并且利用MATLAB/SIMULINK搭建的斩波式串级调速系统仿真模型对该计算方法的计算结果进行了验证;然后分析了影响斩波式串级调速系统功率因数的因素;最后,用并联电容器的方式对斩波式串级调速系统进行无功功率补偿。
6) three-phase four-wire system
三相四线系统
1.
A new one-cycle control scheme of dynamic voltage regulator (DVR) for three-phase four-wire system is proposed.
提出了一种三相四线系统动态电压调节器(dynamic voltage regulator,DVR)的单周控制模型。
2.
In this paper,a three-dimensional space vector modulation(3DSVM) algorithm principle is presented and the principle is applied to DSTATCOM in three-phase four-wire system.
提出了一种三维空间矢量算法原理,并将其用于三相四线系统配电网静止无功发生器(DSTATCOM)中。
补充资料：调元制
1.任命宰相的制诏。
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