三相异步电机直接转矩控制的圆形磁链研究  

Simulation Study of Circular Flux of Three- phase Asynchronous Motor Direct Torque Control System

作　　者：周道龙[1] 田文革[1] 王晓飞[1] 

机构地区：[1]山东科技大学电气与自动化工程学院,山东青岛266590

出　　处：《电子质量》2015年第2期4-7,12,共5页Electronics Quality

摘　　要：该文以异步电动机直接转矩控制基本原理为基础,利用Matlab/Simulink完成直接转矩控制系统近似圆形磁链控制方法的仿真。采用全速范围内的电机模型,利用S函数判断扇区位置,以离散型开关变量产生PWM波,并通过改变转速给定值,得出在不同给定条件下的仿真结果,并用滤波器对定子电流进行滤波,最后对仿真结果进行了具体分析。这对中小功率电机控制系统实际开发应用等方面有一定的实用价值。Based on the basic principle of asynchronous motor direct torque control, this paper simulates the circular flux of three-phase asynchronous motor by direct torque control system. Using the u-n motor model and S function to judge the sector location, producing PWM wave with discrete switch, changing the speed of a given value, it gets the simulation results obtained under different given conditions, and then smoothing the stator current by filter. Finally, the simulation result has carried on the concrete analysis. It will benefit the actual development and application of the control system of medium and small power motor, and have certain practical value.

关 键 词：直接转矩控制 圆形磁链 S函数 定子电流滤波 

分 类 号：TM343.2[电气工程—电机]