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.
起动控制由起动器根据电机的转速自动完成，彻底避免了其它起动装置不能根据负载的大小，自动跟踪电机起动过程而造成电机或起动器损坏等不良现象。
It avoids the phenomena that some damage to motor and starter from other equipment can not trace the starting process of motor by overload.
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.
感应电机采用传统的硬起动会给定子的转矩和电流带来较大冲击，故需研究电机的软起动过程。
The soft start-up process of electronic induction motor is studied in order to avoid the enormous impulsion to its starting stator current and torque brought by direct start.
针对柴油发电机的压缩空气起动过程，给出了压缩空气起动装置数学模型，提出了新的系统仿真模型。
A new simulation model was proposed for the starting process of diesel-generator by compressed air, and the mathematics model of starting equipment by compressed air was put forward.
列举了三个较为典型的解题及绘图程序、即直流电机电枢绕组的机械特性、起动过渡过程的计算与绘制。对每个程序要解决的教学问题及编程的特点作了扼要叙述。
Three typical programs are given, They can be used to compute and draw the armature winding ofd-c motor, the torque speed characteristics and the starting transients of the motor are given.
采用该控制器有效解决了电机在起动过程中产生的大冲击电流的问题，避免了水锤现象的产生，使得水泵机组的运行安全平稳。
Use of the controller gave an effective solution to the large shock current in starting of the motor, and avoided the occurrence of water …
采用该控制器有效解决了电机在起动过程中产生的大冲击电流的问题，避免了水锤现象的产生，使得水泵机组的运行安全平稳。
Use of the controller gave an effective solution to the large shock current in starting of the motor, and avoided the occurrence of water …
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