三相负载

运用CAI课件分析不对称三相负载电路

CAI Courseware on asymmetric three-phase load circuit

控制方面，研究了IEEE中提出的SVC补偿系统的两种基本模型，设计了平衡三相负载、稳定母线电压的综合无功功率补偿调节器。

Control aspect , we study two basic models in the SVC compensation system ( proposed by the IEEE ) . Design a integrated reactive power compensation regulator , it can both balance the three-phase load and stability bus voltage .

Si3N4-SiC真空氮化炉三相负载不对称时的功率分析

Analysis on the Power of Asymmetric Three Phase Load in Si_3N_4 - SiC Vacuum Nitriding Kiln

本文就作者开发的不对称三相负载电路中点位移现象CAI课件之功能与操作方法予以简介，并通过三种情形举例说明该课件在教学中的具体应用与效果。

The functions and the operation methods of the courseware are briefly introduced , and the application and effectiveness of the courseware in teaching are illustrated in three circumstances .

在三相负载不平衡时，使用NFT会使三相输出电压不平衡。

Under unbalanced three-phase-load conditions , NFT 11 make the three-phase-output voltages unbalanced .

特性曲线是在冷态，三相负载下测得。

The characteristic curves are obtained in the cold state and3-pole loading .

计量芯片对三相负载的电压、电流、功率、功率因数以及谐波等参数进行测量。

Measurement chip will measure the three-phase load voltage , current , power and harmonic parameters .

三相负载电压或电流对称的条件&对称线电压下负载电压或电流的正序化

Symmetrical Condition of Voltage or Current of Three-Phase Load & Load Voltage or Current Positive-Sequence under Symmetrical Line Voltage

用电负荷大量为单相负荷，负荷变化随机性强，会造成三相负载的严重不平衡的现象；

The tremendous use of single-phase load and the randomness of load change lead to the unevenness of three-phase loading .

该控制方法不需要检测三相负载电流和三相电源电压，不需要使用任何乘法器，可以大大简化谐波检测电路和电流跟踪控制电路。

This method need not sense the three phase load currents or the three phase voltages , need not use any multipliers .

此方式不仅控制简单，还能有效保证中点电位的平衡、削减系统漏电流并可有效抑制三相负载不平衡。

This method can not only own simple control , but also guarantee the balance of midpoint potential , reduce leakage current of system , and depress three-phase load imbalance effectively .

建立了矿热炉三相负载模型，分析矿热炉冶炼过程中各相电量参数的变化，以及负载特性对矿热炉运行工况的影响。

A three-phase load model is established to analyze the changes of the phase electric parameters and the influence of the load characteristics on the working conditions during the smelting process .

本变压器绕组结构简单，适合于需要同时供给两相负载和三相负载，如牵引变电所用三相负载，高次谐波抑制或动态无功补偿等应用场合。

This transformer with simple winding structures may be utilized to two-phase and three loads such as three loads of traction transformer substation , high order harmonic suppress or dynamic reactive power compensation .

电力机车三相负载电动机采用接触器控制方式，可用微型单片机同时实现电流速断、反时限过流及单相接地等保护。

Contactor control is used by three-phase load motor in electric power locomotive . Current quick-break protection , inverse time over current protection and single-phase grounding protection can be realized by single chip micro-computer .

提出了一种以有源功率补偿器为核心的新型铁路牵引供电系统，以解决现有牵引供电系统对电力系统造成的三相负载不平衡、功率因数低及谐波污染等问题。

A novel traction power supply system with the active power compensator as its key part is proposed as a solution for unbalanced 3 phase load , low power factor and harmonic pollution , etc.

其中，对三相负载的电压、电流、功率以及谐波等参数的准确计量和具体抄表方式也成为电力部门和用户普遍关注的问题。

The three-phase load voltage , current , power as well as harmonic parameters of the accurate measurement and specific way of meter reading also become the common concern among power departments and the users .

三相不对称负载信号的频率检测法

A Method for Detecting the Frequency of Three-phase Asymmetrical Load Signals

组合式三相逆变器负载特性的分析与研究

Realization and Analysis of Three-Phase Combined Inverter

同步电机三相对称负载突然拉开瞬态过程的数学模型

The Transient Mathematical Model of Synchronous Machine in Suddenly Breaking with Three Phase Symmetric Load

三相非线性负载中线电流谐波分析及计算

Test , Analysis and Calculation of Waveform of Load Middle Current in Three-phase Symmetry Colour TV

三相不对称负载因中线阻抗升值引发过电压事故分析

Analysis on causing the trouble of over-voltage in the three-phase unbalanced load because of the increasing of the impedance of neutral conductor

仿真结果证明，有源电力滤波器对于三相平衡负载或三相不平衡负载的谐波电流都起到了很好的补偿作用；同时当负载电流突变时，有源电力滤波器具有良好的动态补偿特性。

The simulation results prove that Active Power Filter can not only eliminate harmonic current effectively , but also have well dynamic compensation characteristics .

本文导出了同步电机三相对称负载突然拉开，电机端电压与励磁电流在瞬态过程中的解析表达式。

In this paper , the breaking transient formulas of terminal voltage and field current of synchronous machine with three phase symmetric load have been derived .

针对可能出现的负载情况，如空载、满载、半载、突加负载、负载端电压波动、非线性负载和三相不对称负载等情况，分别进行了系统仿真。

Simulations were carried out in various load conditions , such as empty-load , full-load , half-load , sudden-load , voltage fluctuations at load terminal , non-linear load and three-phase asymmetric load .

由于单相负载，三相不对称负载，变压器绕组阻抗不相等，三相输电线路的串联阻抗不同等种种因素使得实际的电力分配系统存在一定程度的不对称性。

A practical power distribution system has always a certain degree of unbalance which can be caused by one or several factors such as the single-phase load , unbalanced three-phase loads , unequal impedances of transformer windings and asymmetrical series impedances of power lines or cables .

基于DSP控制的大功率抗三相不平衡负载光伏逆变电源

A Photovoltaic Inverter of high-power and anti three-phase uneven loads Based on DSP control

三相不平衡负载新型无功补偿算法的研究

Research on New Reactive-load Compensation Algorithm for Three Phase Unbalance Load

该系统可以避免三相不平衡负载对逆变器输出电压的影响。

Balancing compensation of3-Ph unbalanced load with cascade inverters based STATCOM ;

综合补偿三相不平衡负载的研究

Research on Integrated Compensation of Three Phase Unbalance Load

三相异步电动机负载率的现场测试方法

The Test Procedure on Working Site for Measuring the Loading Percentage of Three Phase Induction Motor