2、电机软起动与软起动器
2 、 soft starting of motor and soft starter
使电动机的起动电压从0V（初始电压可调）逐渐上升（上升速率可调）至额定电压，完成电动机的起动过程。这种起动方式是电动机软起动。
The starting voltage of the motor is gradually increased from 0V (initial voltage adjustable) to the rated voltage, and the starting process of the motor is completed. The starting mode is the soft starting of the motor.
现代软起动器主要有变频调速及晶闸管调压软起动器两种软起动器方案。其中，变频器调速软起动器常用于控制要求起动转矩较大的电动机。晶闸管调压软起动器用于一般电动机。
Modern soft starter has two soft starter schemes, which are frequency conversion speed regulation and thyristor voltage regulating soft starter. Among them, the frequency converter soft starter is often used to control the motor with large starting torque. Thyristor voltage regulating soft starter for general motors.
电机软启动系统工作时对电网无过大冲击，可大大降低系统的配电容量，机械传动系统振动小，起动、停车平滑稳定，可提高电动机的使用寿命和经济效益。
Motor soft start system work without too much impact on the grid, can greatly reduce the capacity of power distribution system, a mechanical transmission system of small vibration, smooth start and stop, can improve the service life of the motor and economic benefits.
电机软启动后，有启动器控制进入正常运行状态，并继续监控电机的运行。
After the soft start of the motor, the starter controls the normal running state and continues to monitor the operation of the motor.
