一种宽转速范围的双馈电机调速系统  

A Wide Speed Range Doubly-Fed Motor Drive System

作　　者：郑艳文[1] 柴建云[1] 李永东[1] 

机构地区：[1]清华大学电机系,北京100084

出　　处：《电机与控制应用》2009年第9期8-12,共5页Electric machines & control application

基　　金："十一五"国家科技支撑计划(2006BAA01A19)

摘　　要：针对传统双馈电机调速系统调速范围较窄和起动过程存在冲击电流等不足,提出一种双馈电机混合调速系统。该系统在起动和低速段将定子绕组短路,转子侧采用变频调速运行方式,在中高速段则采用双馈调速运行方式,从而实现了双馈系统在宽转速范围内的平滑调速。理论分析和试验结果表明,该系统能够平稳起动,具有良好的调速性能,特别适用于风机水泵类负载。Some shortcomings, like limited variable speed range and starting current impact exist in traditional doubly-fed motor drive system. A hybrid drive system based on DFIM is presented. During the starting and low-speed range, the stator windings are short-circuited and the DFIM system is operated in variable frequency drive mode supplied by rotor side ; in high-speed range, the motor works in doubly-fed mode, so wide variable speed range can be achieved. Theoretical analysis and experimental results show that the system starts smoothly and can satisfy the requirement of fan or pump type load.

关 键 词：双馈电动机 调速系统 宽转速范围 

分 类 号：TM921[电气工程—电力电子与电力传动]