三相对称电源,three-phase symmetry load
1)three-phase symmetry load三相对称电源
2)three-phase symmetrical current source三相对称电流源
1.In order to change the traditional measurement of reactance value of reactor,a method based on the PWM control can be carried out under the rated current in the impedance measurement,and is thethree-phase symmetrical current source.为了改变传统测量电抗器电抗值,介绍了一种基于PWM控制的方法,能够在额定电流下进行阻抗测量,且电源为三相对称电流源。
2.In order to change the traditional measurement of reactance value of reactor,this paper presents a method based on the PWM control which can be carried out impedance measurement under the rated current,and the power is thethree-phase symmetrical current source.传统电抗器电抗值的测量方法为外加三相对称电压源的方法,而电抗器的设计是按三相对称电流源设计的,在实际运行中电抗器两端相当于外接一个对称三相电流源,因此,用传统的测量方法必定引起测量误差。
3)three-phase symmetrical voltage current三相对称电压源
4)three-phase voltage asymmetry三相电压不对称
英文短句/例句
1.A New Method of Compensation Current for DSTATCOM Under Asymmetrical Three-phase VoltageDSTATCOM在三相电压不对称下一种新的补偿电流方法
2.How to Test the Several Order Components of the Three phase Asymmetric Voltage;如何检测三相不对称电压的各序分量
3.The Analytical Calculation Approach of Asymmetrical Magnitudes of Three-Phase Voltages三相电压幅值的不对称量的分析计算方法
4.To Analyze the Reactive power Measure Error of Non-balance Three-phase Circuit with Balance-Phasor Method;用对称分量法分析不对称三相电路无功电能的测量误差
5.Design and Realization of Software Phase-Locked Loop under Grid Voltage Dissymmetry电压不对称情形下基于DSP软件锁相环的设计
6.The Annexed Line Losses Caused by the Asymmetry of Three-phase Current and its Loss-reduction Methods;三相电流不对称引起的附加线损与降损措施
7.The Research on Asymmetric Voltage Regulator with Distributed Generation分布式发电不对称电压调节器的研究
8.Analysis and Suppression of Influence on D-STATCOM Under Unbalanced Voltage of Power System电网电压不对称对D-STATCOM的影响分析及抑制
9.Analysis of three phase voltage imbalance on the 6.3 kV side of high voltage auxiliary transformer of substation高厂变6.3kV侧三相电压不平衡分析
10.non-symmetric varistor非对称型电压敏电阻器
11.A Symmetrical Three-Section PWM for Three-Level Rectifier With Medium Vectors Being Eliminated三电平整流器弃用中矢量的对称三区电压矢量调制策略
12.Analysis of Electromagnetic Transients of Three-phase Transformer"s Non-synchronous Closing and Its Influence on Protection三相不同期合闸下变压器电磁暂态分析及对保护的影响
13.Distributed power generation based asymmetric voltage regulator simulation基于分布式发电的不对称电压调节器仿真
14.No-load Voltage Waveform Optimization of Hydro-generator With Asymmetric Poles采用不对称磁极优化水轮发电机空载电压波形
15.Design and Realization of Phase Locked Loop under Three-phase Unbalance Voltages三相电压不平衡条件下锁相环的设计与实现
16.Analysis and Calculation about Star-Angle Connection in Symmetrical Three-Phase Circuit;对称三相电路中星—角连接的分析与计算
17.Research on output symmetrical control strategies for combinatorial high power three phase inverter组合式大功率三相逆变电源输出对称性研究
18.Discussion on Reactive Power Measurement of Symmetric Three Phase Circuits关于对称三相电路无功功率测量的讨论
相关短句/例句
three-phase symmetrical current source三相对称电流源
1.In order to change the traditional measurement of reactance value of reactor,a method based on the PWM control can be carried out under the rated current in the impedance measurement,and is thethree-phase symmetrical current source.为了改变传统测量电抗器电抗值,介绍了一种基于PWM控制的方法,能够在额定电流下进行阻抗测量,且电源为三相对称电流源。
2.In order to change the traditional measurement of reactance value of reactor,this paper presents a method based on the PWM control which can be carried out impedance measurement under the rated current,and the power is thethree-phase symmetrical current source.传统电抗器电抗值的测量方法为外加三相对称电压源的方法,而电抗器的设计是按三相对称电流源设计的,在实际运行中电抗器两端相当于外接一个对称三相电流源,因此,用传统的测量方法必定引起测量误差。
3)three-phase symmetrical voltage current三相对称电压源
4)three-phase voltage asymmetry三相电压不对称
5)unbalanced voltages不对称三相电压
1.Three-phaseunbalanced voltages have great effects on the performance of an induction motor.对不对称三相电压供电感应电动机起动过程进行了仿真,计算了不同C_(VUF)时感应电动机的起动过程,研究了起动过程中的峰值转矩、起动时间、达到稳态后的三相电流不平衡因数、转速、转速波动、转矩波动与C_(VUF)的关系,得出了相应结论。
6)unbalanced three-phase currents不对称三相电流
延伸阅读
三相电源三相电源three-phase sourcessonxlongd}。ny口。门三相电源(three一phase sourees)能同时提供三个频率相同而初相位互异的电源。三相发电机就是一种常用的三相电源。三相同步发电机的工作原理图1是两极三相同步发电机的示意图。其中，AX、BY和CZ是三个完全转子绕组图1两极三相同步发电机示意图一样而彼此间隔12护的定子绕组，分别称为A相、B相和C相绕组。A、B、C是各绕组的始端，X、Y、Z是各绕组的末端。直流电流通过转子绕组，转子被磁化成一对磁极。当转子以角速度。匀速作顺时针旋转时，在相绕组AX、BY和CZ中分别感应出正弦电动势。A、。B和eC，它们分别称为A相、B相和C相电动势。这一组三相电动势的振幅(或有效值)相同，角频率均为。。若设每一相电动势的参考方向都规定由相绕组的末端指向始端，则在相位上印要比。、滞后12丁，ec又比eB滞后120”。三相电动势的瞬时值的表示式为 召、一了万~Esin、，。。一护厄叮Esin(。t一12。。)， 。C一了厄-Esi。(、一2400)它们的相量表示式为 瓦一E丝，宜。一E/一1200，它。一E/一2400图2(a)一和(b)分别是这一组三相电动势的波形图和相量图。图2三相电动势的波形图和相量图(a)波形图;(b)相量图相序一电动势eA、eB和、通过具有相同斜率同一值(例如通过正最大值)的次序。如图2(a)中，最先通过正最大值的是eA、其次是eB、再其次是ec，故相序为A一B一C，称为正序。如果三相电动势通过正最大值的次序A一C一B，则相序为负序。通常，三相电动势的相序都是正序。相绕组的连接方式三柑电源的相绕组有两种基本接法:星形连接(Y形连接)和三角形连接(△形连接不把只个相绕组的末端连在一起，成为公共节点N，而始端入、B、C则分别与端线(传输线)相接，这便是星形连接。N称为电源的中性点，见图称(a)。若将每一相绕组的末端与它紧邻的后一相相绕组的始端相连后，再将一A、玖C分别与端线相接，这就是三角形连接，见图3(b)。 一二公丝劣卿。塑冷赞Y里铆B(C相)}(A相)Xz生担)c，(B相》Yc(a)(b)图3三相电源的连接方式(a)星形连接;(b)三角形连接星形连接的三相电源简称为星形电源，三角形连接的三相电源简称为三角形电源。相绕组中的感应电动势用电压源反映，考虑到相绕组有阻抗，故星形电源和三角形电源的等效电路图如图4(a)、(b)所示。
