基于等效电感方法的电磁式双凸极电机系统简化控制模型  

THE SIMPLIFIED MODELING FOR DOUBLY SALIENT ELECTRO-MAGNETIC MACHINES BASED ON EQUIVALENT INDUCTANCE

作　　者：周波[1] 任立立[1] 韦海荣 

机构地区：[1]南京航空航天大学航空电源部级重点实验室,江苏省南京市210016

出　　处：《中国电机工程学报》2005年第14期109-114,共6页Proceedings of the CSEE

基　　金：航空科学基金(02F52031);教育部博士点科研基金(20020287020);江苏省自然科学基金项目(BK2003088)~~

摘　　要：针对电磁式双凸极电机(DSEM)的特点,提出了等效电流的概念,在此基础上提出一种基于等效电感的建模新方法。该方法用恒定的等效电感替代随角度变化的实际电感,替代前后双凸极电机的平均转矩保持不变,但其模型与直流电机模型完全一样,因此,可以象直流电机那样方便地进行仿真与控制系统的工程设计。为了验证等效电感建模法的有效性,文中在不同激励与工作状态下,将基于等效电感模型的电机输出特性与基于分段线性电感模型的电机输出特性进行了仿真比较,两种模型输出特性非常接近,表明等效电感模型具有比较高的精度;最后进行了系统实验,所得实验波形与仿真波形基本一致。等效电感建模法还可以推广应用到开关磁阻电机等场合。Aiming at characteristics of doubly salientel ectro-magnetic machines （DSEM）, the concept of equivalent current is proposed and a novel modeling method based on equivalent inductance is put forward. In case of the average torque being kept constant, the real inductance varying with the rotation angle can be expressed as a constant equivalent inductance.Consequently, the model of the DSEM based on equivalent inductance is the same as that of DC electrical machines and it is reasonable to carry out the simulation and control design for the DSEM system as that for DC electrical machine. The characteristic comparison is completed with simulation for DSEM between the model proposed and that based on sectionalized linearity inductance in different excitations. The simulation results have shown that the characteristics are pretty similar for the two models and the modeling method proposed here is accurate and feasible. Finally, the experiments are implemented, and the results are consistent with the simulation ones. The method of modeling based on equivalent inductance can be extended to the switched reluctance machines.

关 键 词：双凸极电机 建模 仿真 等效电感 

分 类 号：TM359[电气工程—电机]