降低起动过程中对电网的电气冲击。
Soft starter reduce the electric shock to the electrical net.
电子软起动在起动过程中可降低电流水平。
Electronic soft starting reduces current levels during starting.
分析了异步电动机在起动过程中电流和转矩的变化情况。
It is analyzed the variation of current and torque during induction motor starting process.
同时该方法克服了外同步起动过程中易产生的振荡和失步现象。
The hunting and outofstep are conquered in the process of start.
分析了一起母线失电后快切装置动作时电动机起动过程中差动保护的误动事故。
In course of motor starting after no-voltage bus, a malfunction fault of motor differential protection was analyzed.
得出了进气预热在电控柴油机起动过程中对转速、起动时间、HC排放的影响规律。
Influence rules of air intake preheating on revolution speed, starting time and HC emission in the starting process of electronic controlled diesel engine were acquired.
通过对高压电动机起动过程中电气参数变化的研究，提出高压电动机过热保护的整定计算方法。
Through the study of the electric machine parameter changing during the starting of the high voltage motor, provided the setting calculation method for high voltage motor overheat protection.
结果表明，该软起动器在软起动过程中，限制了电动机的起动电流，实现了电动机的平稳起动。
The results show that the soft starter could start up smoothly and reliably, and the starting current of the asynchronous motor is controlled.
分析了带有液体粘性传动装置的长距离带式输送机，在软起动过程中起动时间的长短对振动载荷的影响。
There are a lot of factors which affect dynamic load of the belt conveyors, and the smooth starting time is a improtance factor.
本文正是从实际应用的角度出发，来研究凸极同步电动机在起动过程中的电磁场和电机转子温升变化规律。
From the aspect of practical application, this paper studies electromagnetic fields and rotor temperature rise change of salient synchronous motor in the process of starting.
主机和电动机通过液力偶合器连接，能够缩短电机起动时间，减少起动过程中的平均电流，防止动力过载。
Main machine and motor connected through the fluid coupling, it can shorten the motor start-up time, reduce the average current during start and prevent overload of the power.
对电动机在不同性质的负载下，恒电流起动过程中起动时间与电压率、起动电流倍数的关系进行了理论分析。
The paper analyses the relation of the starting-time and the multiple of starting current and voltage in the current-limited starting process of motor with different character load .
计算结果显示，在贯流泵站起动过程中，闸门开启延时时间以及闸门开启速度对起动过渡过程均有明显影响。
The results show that, in the tubular pump start the process, the delay time of opening gate and the speed of the starting gate are significant influence the transition process.
提出了一种实用的晶闸管触发方法，这种方法以电流的过零时刻作为触发基准，保证起动过程中电流的关断角稳定。
A new thyristor trigger method is proposed. This method takes the current crossing point as the trigger base and keeps the current hold off Angle stationary.
分析了微机电动机保护装置在此次事故中的动作情况，并使用emtp仿真工具仿真电动机在自起动过程中的电流波形。
The operation condition of motor microcomputer-based protection was analyzed in this fault, and the current waveform in the course of starting was simulated using EMTP simulation tool.
预测了紧急停车和起动过程中突然停电等工况下带式输送机的动态特性，并通过选择飞轮质量来达到控制和优化其性能的目的。
Dynamic characteristics of the belt conveyor under conditions that power supply fails suddenly during stopping and starting are predicted by simulation to control and optimize them.
软启动器可以限制感应电机的起动电流及起动转矩，减少了电机起动过程中对电网的冲击，延长了电气设备和机械结构的使用寿命。
Soft-starter can limit the start current and torque of the induction-motor, reduce the influence to the power circuit in the starting process, and prolong electrical equipments' working life.
分析起动过程中输送带的动张力的影响因素及危害，绘制了常用速度图下的动张力曲线并进行了分析比较，为设计计算提供了理论依据。
In this paper, the affect and hazard of dynamic stress are analysed in the course of belt, the dynamic stress curves are plotted and analysed, the foundation is supplied for designing and computing.
利用本文提出的动态模型变参数数学模型，在国际上首次对燃料电池起动过程进行了动态模拟，揭示了燃料电池热态起动过程中，电池温度在三维空间上随时间的变化规律。
The three dimensional variation rule of the temperature of the cell with the time is presented during the process of the startup. A MCFC-ST combined generation system is presented and designed.
在计算过程中，比较完整地考虑了各种阻力矩对起动过程的影响，同时重点考察了平直管出水流道，具有快速闸门带小拍门断流装置形式的起动效果。
All kinds of resisting moment effects upon pump start-up process are fully considered and the different operational results of outlet gate with little flap valve are also reviewed.
在计算过程中，比较完整地考虑了各种阻力矩对起动过程的影响，同时重点考察了平直管出水流道，具有快速闸门带小拍门断流装置形式的起动效果。
All kinds of resisting moment effects upon pump start-up process are fully considered and the different operational results of outlet gate with little flap valve are also reviewed.
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