PWM整流技术在串级调速中的应用与分析  

Application and Analysis of PWM Rectify Technology in Cascade Speed Drive System

作　　者：吕斌[1] 江友华[2] 

机构地区：[1]淮南矿业集团,安徽淮南232001 [2]上海电力学院,上海200090

出　　处：《煤矿机电》2013年第6期94-97,100,共4页Colliery Mechanical & Electrical Technology

摘　　要：大容量通风机和泵类负载合理的调速方式通常为串级调速,但传统的串级调速系统功率因数低下,容易发生故障,对此探索性地引入PWM整流技术,以代替传统的晶闸管整流方式。通过试验证明,PWM整流技术能提高功率因数,分析了PWM整流拓扑结构,并根据其控制策略设计了电流电压控制器,效果良好。The reasonable loading speed drive methods of large capacity pump and fan are cascade speed drive. But the power factor of traditional cascade speed drive system is low and the faults occurs easily. So exploratively introduces the PWM rectify technology, which replace the thyristor rectification method. The test proves that the PWM rectifier technology can improve the correctness of the traditional power factor theory. Analyzes the PWM rectifier topology structure and designs the current-voltage controller according to the control strategy, and has good effect.

关 键 词：串级调速 PWM整流 异步电动机 

分 类 号：TD614[矿业工程—矿山机电] TM921.53[电气工程—电力电子与电力传动]