矿井提升机双PWM交直交变频调速系统

作者：王晓晨，孙凤香 日期：2008-02-25/span> 浏览：4054 查看PDF文档

矿井提升机双PWM交直交变频调速系统

王晓晨，孙凤香
（合肥工业大学 电气与自动化工程学院，安徽 合肥 230009）

摘要：根据矿井提升机的工作特性和拖动系统的现状，研究了其基于双PWM结构的异步电动机交直交变频调速拖动方案。PWM整流器部分采用电压、电流双闭环矢量控制策略；逆变器部分采用按电机转子磁通定向的矢量控制方法。建立了控制系统模型，并深入分析了其原理。最后以660 V等级的提升机为实例，采用Matlab仿真了一个提升循环运行时的情况，仿真结果证明：此调速系统的运行性能良好，达到了预期目的。
关键词：矿井提升机;双脉宽调制;异步电动机;矢量控制;计算机仿真
中图分类号：TD534；TM343+.2文献标识码：A文章编号：1001-4551(2008)02-0056-04

Dual PWM AC-DC-AC variable-frequency adjustable-speed system in mine hoist
WANG Xiao-chen, SUN Feng-xiang
(College of Electrical and Automatic Engineering, Hefei University of Technology, Hefei 230009, China)
Abstract: According to mine hosit’s operating characteristic and its driving system’s present situation. its AC-DC-AC electric drive scheme with induction motor based on dual pulse width modulation (PWM) structure was discussed. Dual close-loop vector control was applied in the system’s rectifier, and vector control oriented by rotor flux to the induction motor was applied in the inverter. The control stystem’s model was established and its theory was analyzed in detail. Taking example for 660 V grade voltage hoist, situation during a lifting cycle was simulated by Matlab. The results prove that the motor’s performance is good, and it realizes the expected purpose.
Key words: mine hoist; dual pulse width modulation (PWM); induction motor; vector control; computer simulation
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