异步电机软启动控制系统研究

Research of Control System of Soft Starting for Induction Motor

针对传统的两相调压控制系统中存在两组晶闸管选型不一致的问题,本文先对带阻性负载的两相可控交流调压的三相电路,详细分析了负载电压的工作波形。并针对两组晶闸管选型不一致的缺陷提出了一种改进的两相调压软启动控制系统。在MATLAB/simul ink仿真平台上实现了两组晶闸管通电电流一致的控制,控制方式达到了预定的控制效果。

For the problem of the different between the type of the two groups of thyristors in the traditional two-phase adjust voltage control system.Based on a resistance of the load in the three-phase circuit which two-phase voltage can be charged,this paper detailed analysis the voltage work waveforms of the load.Then for that defect,one improved two-phase adjust voltage control system is proposed.On the simulation platform Matlab/simulink,the control of the same conduction currents in the two groups of thyristors are realized.Control system achieved preconcerted effect.