利用PLC控制实现1台自耦变压器启动3台电动机  

One Autotransformer Achieved to Start Three Electric Motors by Using PLC Controller

作　　者：段宏君[1] 王素萍[1] 

机构地区：[1]安阳职业技术学院,河南安阳455000

出　　处：《煤矿机械》2010年第9期203-204,共2页Coal Mine Machinery

摘　　要：某煤矿风机以前均采用独立的自耦变压器降压起动方式,每台电动机均配有自耦变压器及控制系统,不仅投入大,且维护量也大,控制设备不能得到充分利用。介绍利用1台自耦变压器启动3台电机不同时启动的PLC控制方法,该系统减少了启动变压器的台数,在启动过程中不影响已启动的电机运行,并具有容错能力,能满足实际的使用要求。The fans start by a independent autotransformer step-down of voltage starting mode before in the coal mine. Each electric motor has autotransformer and control system. It inputs large and maintenances difficult. The control equipment hasn＇t utilized fully. One autotransformer starts three electric motors and doesn＇t start PLC at the same time. This system reduces the starting transformers and it doesn＇t influence the starting electric motors working. What＇s more it has fault tolerant capabilities. It can meet the operating requirements in practice.

关 键 词：可编程控制器 自耦变压器 控制 互锁 

分 类 号：TM34[电气工程—电机]