基于PLC控制系统的高压大电机磁控软起动装置研究  

Research on Soft Starter for High Voltage Electric Machines based on MCR

作　　者：陈博[1] 

机构地区：[1]华中科技大学电气与电子工程学院,湖北武汉730074

出　　处：《科技创业月刊》2012年第4期137-139,共3页Journal of Entrepreneurship in Science & Technology

摘　　要：针对高压电机起动过程中的电网电压凹陷,以及电网枢纽点的母线电压波动等电能质量问题,提出了一种基于PLC调控自给直流励磁磁阀式可控电抗器的新型高压电机软起动方式。该方法克服了传统软起动方式装置体积大,谐波较大,对环境要求高,可靠性低,价格昂贵等缺点。结合自励式磁控软起动器基于恒流起动的控制策略,开发出基于16位单片机(Intel 80C196KC)和可编程逻辑控制器(PLC,Siemens S7-200)相结合的软起动器控制装置。To the voltage sag during the starting of medium-voltage（MV,3～10kV） motors,and voltage fluctuations of bus bar in high-voltage power grid,the paper researches a new high-voltage soft starter based on PLC regulated auto-excitation MCR,which have overcame the traditional soft starter bulky,greater harmonics,highly demands on the environment,low reliability,high cost and other disadvantages.This paper researches constant current starting control strategies of auto-excitation MCR soft starter,develops the controller based on 16-bit microcontroller（Intel 80C196KC） and programmable logic controller（PLC,Siemens S7-200）.

关 键 词：PLC 高压电机 软起动 自励磁 磁控电抗器 

分 类 号：TM923[电气工程—电力电子与电力传动]