基于电力电子电抗器的软启动器等效电路模型  

Equivalent Circuit Model of Soft Starter Based on Power Electronic Reactor

作　　者：黄文聪[1,2] 常雨芳[1] 袁佑新[2] 徐操[1,2] HUANG Wencong;CHANG Yufang;YUAN Youxin;XU Cao(Hubei Collaborative Innovation Center for High-efficiency Utilization of Solar Energy,Hubei University of Technology,Wuhan 430068,Hubei,China;School of Automation,Wuhan University of Technology,Wuhan 430070,Hubei,China)

机构地区：[1]湖北工业大学太阳能高效利用湖北省协同创新中心,湖北武汉430068 [2]武汉理工大学自动化学院,湖北武汉430070

出　　处：《电气传动》2019年第10期9-12,107,共5页Electric Drive

基　　金：湖北省自然科学基金（2016CFB512）;湖北省太阳能高效利用中心开放基金（HBSKFMS2014002）

摘　　要：针对高压大容量电动机启动电流过大的问题,提出一种基于电力电子电抗器的软启动方法,分析了软启动器的工作原理,建立了软启动器的等效电路模型,分析了电力电子电抗器的电抗变换机理,分别进行了高压大功率电动机直接启动和软启动的Matlab仿真,设计了高压大功率电动机软启动器,进行了试验,并将软启动器成功运用于19000kW高压大容量异步电机的软启动。仿真及试验结果表明:该软启动器可以实现高压大容量电动机的平滑软启动,具有启动电流小、启动平稳、无二次电流冲击的特点。There is too large starting current when high-voltage large motors start up direct-on line,it will cause many damages.In order to solve these problems,a soft starting method which adopted power electronic reactor in its main circuit was designed.The working principle of high-voltage motors′soft starter based on the power electronic reactor was analyzed.It was required to establish the equivalent-circuit model of power electronic reactor to research its reactance conversion mechanism.The simulation model of high-voltage motor was established using Matlab,andthe simulations of direct starting and soft starting process were carried out.A high-voltage motor soft starter was successfully designed and used in soft starting of a 19 000 kW motor.The experimental results show that it can help the highvoltage motor start smoothly and has many characteristics such as low starting current,little impact on grid and high performance.

关 键 词：高压大功率电动机 电力电子电抗器 软启动器 电抗变换机理 

分 类 号：TM343[电气工程—电机]