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.
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。
Programmable soft-start can eliminate the inrush current when this converter starts up.
具有可编程的软启动功能，可以避免启动时的电感电流过冲；
Three soft start-up technique for voltage loop are compared with each other, which are the reference of DC bus voltage gradually increasing, constant charging current and different PI modulation.
电流环软启动通过输出电流指令递增实现，电压环软启动则比较了直流侧电压指令逐步升高法、恒定电流充电法、变PI参数调节法三种策略。
The results show that the soft starter could start up smoothly and reliably, and the starting current of the asynchronous motor is controlled.
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 of the simulation proved that the soft starting control can effective reduce start current as high voltage induction motor start up directly and the motor could start up smoothly.
仿真结果表明软起动控制可以有效地减小高压异步电动机的起动电流，使电机平稳起动。
The results of the simulation proved that the soft starting control can effective reduce start current as high voltage induction motor start up directly and the motor could start up smoothly.
仿真结果表明软起动控制可以有效地减小高压异步电动机的起动电流，使电机平稳起动。
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