斩波串级调速系统建模与双闭环控制仿真  

System Modeling and Double Closed-loop Control Simulation in Chopped Wave Cascade Speed Control System

作　　者：张军伟[1] 王兵树[2,3] 姜萍[1] 

机构地区：[1]河北大学电子信息工程学院,河北保定071002 [2]华北电力大学控制科学与工程学院,河北保定071003 [3]保定华仿电控变流技术研究所,河北保定071056

出　　处：《控制工程》2011年第6期977-981,共5页Control Engineering of China

基　　金：科技型中小企业技术创新基金(06c26211300065)

摘　　要：考虑到电力电子器件的开关非线性给系统建模带来的困难,利用状态空间平均法对主回路各参量基本输入输出关系进行了分析,得出了主回路的简化数学模型及斩波串级调速系统的动态模型,并采用"模最佳"原则和"谐振峰值Mr最小"准则分别设计了相应的电流环和转速环,最后使用Simulink软件搭建了加入双闭环后的仿真模型给以验证。从仿真结果看出加入双闭环后的系统动态性能有很大改善,而且控制结构简单易于工程实现,同时也验证了系统建模的正确性。To the switching nonlinear features of the power electronic component, the state-space averaging method is used to analyze the basic relationship between the input and output parameters of the main circuit. The simplified mathematical model of main circuit and the dynamic model of chopped wave cascade speed cortrol system are deduced. The corresponding current loop and speed loop control links are designed by means of the model-optimizing engineering method and the harmonic vibration peak minimum guide. The performance of double closed loops controlled system is built up with the software simulink. The simulation results show the dynamic characteristics of the system with double closed-loop are improved and suitable for more industrial production fields, which indicates the correctness of the system modeling.

关 键 词：斩波串级调速 系统建模 占空比 双闭环 状态平均法 

分 类 号：TP27[自动化与计算机技术—检测技术与自动化装置]