交流电机软起动装置中管压降信号的应用

Application of the Voltage Drop Signals on SCR in the Soft Starting Device for AC Motor

本文提出了一个在交流软起动装置中应用管压降信号进行多功能检测的检测电路，叙述了它的原理。它结合微机控制系统的软、硬件，可实现多种功能。

This paper presents a detecting circuit using the signal of voltage drop on SCR in soft starting device forAC motor. Its principle is also described. With the software and hardware of microcomputer,the device can fulfil functions of detecting and protecting.