threephase

Threephase AC voltage regulation based on phase width modulation and on dual CPU scheme and circuit realization

利用双CPU方式的PWM消谐三相交流调压及电路实现

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The text relates the fundamental principles, structures and designs of phase-locked velocity servo loop for threephase asynchronous motor, and introduces the result of tests.

论述了三相异步电动机锁相式速度控制系统的基本原理、结构及其回路设计。并介绍了研制试验的结果。

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The Experimental Study on the Flow Patterns of Oil-gas-water Threephase Flow in Inverse U Tube

倒U形管内油气水三相流动流型分布的研究

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Economic Benefit of Reactive Terminal Compensation of a Threephase Asynchronous Motor

三相异步电动机无功终端补偿的经济效益

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By an accident to know the harmfulness of distribution transformer with unbalanced threephase load

从一起事故看三相负荷不平衡对配电变压器的危害

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It was analyzed why threephase load in unbalance can be taken place, the harmfulness resulted from distribution transformer with unbalanced threephase load was discussed emphatically and the importance of balanced threephase load was pointed out in this paper.

结合一起事故，分析了三相负荷不平衡产生的原因，着重论述了三相负荷不平衡对配电变压器产生的危害，指出了平衡三相负荷的重要性。

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Analysis on the Main Causes of the Technical Fluctuation in Manufacturing of Threephase Asynchronous Motor

浅析三相异步电动机制造工艺波动的主要原因

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Three equations for satisfying symmetrical condition of voltage or current of threephase three-wire load in the form of rotating factor am and admittance or impedance are introduced.

本文应用旋转因子a~m及导纳或阻抗的形式给出了对称线电压下，满足三相三线负载电压或电流对称条件的三个方程。

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Research on the damage factors of the threephase separator in Zhongyuan Oil Field

中原油田三相分离器损坏因素研究

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A detailed relationship between the lighting and the eyesight, and the methods and the advantages of putting a fluorescent lamp into a phase shift circuit and a threephase circuit are also discussed in details.

文中还就照明与视力的关系，荧光灯接入移相电路、三相电路的方法及优点作了阐述。

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The Methods and Error Analysis of ThreePhase Reactive Power Measurement

三相无功功率测量的方法及误差分析

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Analysis and calculation on wire Misconnection of Threephase Kilowatthour Meter

三相电能计量装置错接线分析与计算

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In this paper, the principle and the circuit of the power saver of the threephase induction motor are studied.

本文研究三相电动机节能器的电路和节能原理。

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The starting process of the threephase asynchronous motor of the track eddy current brake measuring system is calculated in anticipation with several methods.

采用解析法和计算机辅助分析法，对轨道涡流制动测试系统中的三相异步电动机起动过程进行了预期计算。

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This paper discusses basic theory of measuring threephase AC electric energy based on DSP.

论述了基于DSP的测量三相交流电能的基本原理。

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Phase Failure Protection for Small Threephase Asynchronous Motors

小容量三相异步电动机断相保护方法

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The purpose of this studying is to develop a kind of new electric material that are low cost, high resistivity and good mechanical property used for high torque special threephase asynchronous motor rotors, so that raising quality of motors and increasing economic profit.

该项研究是为了开发一种成本低、电阻率高和力学性能好的电工新材料，用于高起动转矩特种三相异步电动机转子上，以达到提高电机质量、提高经济效益的目的。

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Hydrodynamic Study of Threephase Slurry Reactor with High Solid Concentration

高固含率三相淤浆床反应器流体力学研究

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The design of a multifunctional threephase watthour meter based on DSP

一种基于DSP的多功能三相电能表的设计

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The harm of singlephase operation of threephase AC motor and its protection

三相交流电动机单相运转的危害及保护

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The solid particles in threephase flow could prevent and clean the fouling on heat transfer wall.

固体粒子的存在，能有效地防止和清除传热壁面上的污垢。

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Design of Threephase Asynchronous Motor Start Stop System Based on VC

基于VC的三相异步电机启停系统的设计

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Both theoretical analysis and experimental study on boiling heat transfer for threephase flow were carried out.

对三相流沸腾传热进行了理论分析和实验研究。

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Digital Control System for Thyristor Threephase Constant Voltage with Intermediate Frequency

一个晶闸管三相中频恒压电源的数字控制系统

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Network Solution of Leakage Magnetic Field Distribution of ThreePhase Transformers

应用等效磁网络方法分析电力变压器漏磁场分布

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The test circuit for measuring stray losses of threephase asynchronous motor by variable frequency feedback method is provided in this paper STRAY LOSSES OF ROTATING MAGNETIC FIELDS IN ELECTRICAL MACHINES WITH SHIELDS

依据国家标准规定，自行设计了实现用变频回馈法测三相异步电动机杂耗的试验线路，并进行了实际测量。旋转磁场中电机屏蔽的损耗

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The Threephase Asynchronous Motor Performance Integration Test System

三相异步电动机性能综合测试系统

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Study and Application on the liquid rate of gasliquid solid threephase jet loop bioreactor

气液固三相喷射环流生物反应器中液速研究及应用

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The study on the modification of new material used for high slip and special threephase asynchronous motor rotors

高转差率特种三相异步电动机转子新材料变质处理试验研究

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The threephase circuit is applied to production and life extensively, so the experiments of it are important and necessary, nevertheless the experiments are not only very dangerous, but also some of fault experiments are relatively hard to do.

在生产与生活中三相电路的应用最为广泛，针对三相电路运行工况的实验就显得重要而且必然，然而实际的三相电路实验不仅危险性较大，而且一些故障性试验较难进行。

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