three-phase circuit

Abstract: the three-phase circuit is regarded as some of drive of the whole power system in actual project, it has its special meaning in practical application carry on correct use and particularly important control to it.

摘要：三相电路作为实际工程中整个电力系统的驱动部分，在实际应用中有其特殊的意义，因此对其进行正确的利用和控制尤为重要。

Active power filter can compensate current components which include distortion and negative sequence current components when it is used in unbalanced three-phase circuit.

电力有源滤波器能动态补偿不对称三相电路的畸变电流、负序电流分量。

Calculation on Three-phase Short Circuit of Power Distribution Network

配电网三相短路计算

Singlechip Control Method for the Trip-Pulses in Three-Phase Circuit

三相全控桥触发脉冲的单片机实现方法

The utility model discloses an energy consumption braking circuit of a three-phase asynchronous motor, which is composed of a three-phase asynchronous motor and a main control contactor.

本实用新型公开了一种三相异步电动机能耗制动电路。它由三相异步电动机与主控接触器构成。

When the three-phase circuit appears to break phase failure and phase stagger, the electric circuit can break to open the power supply circuit automatically, and to guarantee the normal movement of motors.

当三相电路出现断相错相故障时，该电路能自动断开三相电源线路，以保证电机的正常运行。

Analysis and Study on Instantaneous Power of Three-phase AC Circuit

三相交流电路中瞬时功率的分析和研究

This dissertation take the application of Internet in the long-distance control as research background, take accomplishment of three-phase circuit experiment in the distance as research purpose.

本论文以Internet在远程控制上的应用为研究背景，以远程完成三相电路实验为具体研究目的。

Waveshape and Vector Analysis of Interrupting Process in Three-phase Circuit

三相电路开断过程的波形和矢量解析法

Furthermore, we considered phasor dynamics of values of negative sequence and zero sequence. Analysis of Unbalance Three-phase Circuit and a Practical Circuit for Judging Phase Sequence

对于发电机的负序和零序，采用了等值的电路模型并考虑了其中电压和电流的相量动态。一种相序判定方法分析及其实用电路

3) Research on the zero-current-breaking control ( ZCBC) for intelligent AC contactor and realize the micro-arc-energy breaking control in three-phase circuit.

进行智能交流接触器零电流分断的研究，并实现了三相电路的微电弧能量分断控制。

A novel main circuit topology of the simulative appliance with three-phase parallel-connected load characteristic was proposed.

提出一种新颖的 三相 并联型负荷特性模拟装置及其相应的主电路拓扑结构.

Several Problems about Measuring the Power of Three-phase Circuit

测量三相电路功率常见的几个问题

We get a representative waveform by magnetic flux linkage's vector transform, when one IGBT is in circumstances of short circuit or open circuit in voltage source inverting three-phase circuit.

当逆变电路中一个IGBT出现短路和断路故障时电机的电流参数的变化，尤其是电机矢量变换后磁链的变化。

As for control circuit, a novel detecting method for harmonic current in single-phase circuit is introduced in detail, viewed as an extension of the idea of instantaneous reactive power theory in three-phase circuit.

在对三相电路瞬时无功功率理论的思想进行扩展的基础上，得到了单相电路谐波电流的瞬时检测方法。

Voltage-Drop Starting Control Circuit Analysis of Three-Phase Asynchronous Motor Autotransformer

三相异步电动机自耦变压器降压起动控制电路分析

Analysis and calculation on the instaneous reactive power of three-phase circuit

三相电路瞬时无功功率分析与计算

It can be seen that the proposed theory greatly generalizes the traditional transformation theory for three-phase circuit, and then, is in favor of establishing a theoretical foundation for harmonic detection, motor control, and fault diagnosis of multiphase system.

可以看到，该变换可以很好地包含传统的三相电路的坐标变换理论，而且它有助于建立多相电路谐波检测、多相电机独立控制、多相电路故障诊断等应用的理论基础。

The development and design of virtual experiment for measurement of three-phase AC circuit

三相交流电路测量的虚拟实验开发与设计三相交流同步发电机

Transients in unbalanced three-phase circuit and measurement of power factor

三相不平衡电路的暂态过程及功率因数的测量

Harmonic detection for three-phase circuit based on TLS algorithm

基于TLS算法三相系统的谐波检测

Aiming at the defects of the traditional circuit the method for the digital phase-shifted trigger in three-phase circuit is proposed on the basis of CPLD.

在介绍软并网控制系统的基础上，针对失速型风电机组的特点提出了一种简单、可靠的数字触发新算法&双余算法。

Research of asynchronous EM reactive power measurement under non-sinusoidal waveform in three-phase circuit

非正弦状态下三相异步电机无功功率测试研究

The control circuit of three-phase voltage source PWM rectifier is consisted by a PLC, a HMI ( Human Machine Interface), a power parameter measuring instrument and the central control unit.

文中的三相电压型PWM整流器系统的控制电路由PLC，人机界面HMI（Human Machine Interface），电力参数测量仪和中央控制单元组成。

Active Power and Power Factor Measurement Under Non-sinusoidal Waveform in Three-phase Circuit

非正弦状态下有功功率和功率因数测试

This paper introduces a novel circuit fault limiter applicable to the three-phase ungrounded power systems.

介绍了一种适用于三相不接地系统的短路故障限流器.

This paper mentions several ways of dealing with harmonic by computer program and the new method of harmonic control, At last part I will analysis the harmonic in symmetrical three-phase circuit and its effect on the measurement of Active Power.

文章也介绍了逆变电源谐波分析的几种方法，并提出了消谐控制的新思想，同时说明了谐波分析的另外几种编程计算方法。

The Circuit Loss Rate Analysis of Three-Phase Unbalanced Circuit

三相不平衡线路的线损分析

Harmonic Current Detection Algorithm of Three-Phase Circuit Based on DSP

基于DSP的一种三相电路谐波电流检测算法

Research on Improving Reactive Power Measure Precision for Complete Unbalanced Three-phase Circuit

完全不平衡三相电路无功功率测量精度的探讨