交流传动矢量控制系统时延补偿  

Time-Delay Compensation About AC Drive Vector Control System

作　　者：孙大南[1] 刁利军[1] 刘志刚[1] 

机构地区：[1]北京交通大学电气工程学院,北京100044

出　　处：《电工技术学报》2011年第5期138-145,共8页Transactions of China Electrotechnical Society

基　　金："十一五"国家科技支撑计划重点项目(2006BAG02B06)

摘　　要：系统时延的存在降低了矢量控制系统性能,对大功率低开关频率交流传动变流器性能影响尤其明显,当电机在中高速段运行时,可能导致系统的不稳定。针对此问题,本文分析了系统时延对于交流传动矢量控制系统稳定性的影响,提出了一种基于q轴电流误差的新型系统时延补偿算法。该算法克服了传统延时补偿方法的局限性,实现简单,较好地消除了延时引起的系统在中高速时电机电流振荡、转速摇摆等不稳定现象。最后,在110kW异步电动机交流传动矢量控制实验平台上验证了时延补偿算法的有效性。The existence of time-delay constrains the performance of vector controlled inverters,particularly has a deep influence on high power and low switching AC drive converters,which may result system instability when motor is running in middle or high speed.The relationship between time delay and system stability is analysised.A new time delay compensation algorithm based on q-axis current error is proposed,which overcome the limitations of traditional compensation system,and which is realized simply.At the same time,this compensation algorithm eliminate current oscillation and motor unstable speed swing in middle-high speed.At last,the proposed time delay compensation algorithm is varified on 110kW AC induction motor vector control experiment platform.

关 键 词：时延补偿 位移角 矢量控制 交流传动 

分 类 号：TM301[电气工程—电机] TM921.5