CAJ | 학술논문

设计一种软启动器，以可控硅做主控元件，单片机控制软启动策略，实现对异步电动机的软启动。STM32系列微控制器通过控制可控硅导通的周期波数，进而改变异步电动机启动电压的平均值，从而减少启动电流对电网的冲击。同时进行相位检测，确定启动电流的过零触发，克服了一般软启动器产生严重谐波污染的问题。
설계일충연계동기，이가공규주주공원건，단편궤공제연계동책략，실현대이보전동궤적연계동。STM32계렬미공제기통과공제가공규도통적주기파수，진이개변이보전동궤계동전압적평균치，종이감소계동전류대전망적충격。동시진행상위검측，학정계동전류적과령촉발，극복료일반연계동기산생엄중해파오염적문제。
A soft starter which takes SCR as master element and single-chip for the soft-start control is designed to achieve soft-start of the asynchronous motor. The average value of the startup voltage of asynchronous motors can be changed by the series of STM32 microcontroller according to the periodic wave number generated by controlling the breakover of SCR,so as to achieve asynchronous motor soft-start and reduce the starting current impact of grid. While detecting phase,it always determines the zero trigger of starting current. It overcame the serious harmonic pollution caused by soft starter.