PWM供电下的永磁无刷直流电动机仿真研究  

Simulation study of permanent magnet brushless DC motor based on PWM power supply

作　　者：林勇军[1] 李娟娟[1] 张敬华[1] 

机构地区：[1]合肥工业大学电气与自动化工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2003年第2期302-305,共4页Journal of Hefei University of Technology：Natural Science

摘　　要：从永磁无刷直流电动机的数学模型出发,利用SIMULINK为仿真平台建立系统的仿真模型,对系统模型进行仿真和分析,给出仿真结果。分析无刷直流电动机转矩脉动产生原理以及通过控制PWM电压的开关角减少转矩脉动,并给出仿真结果。仿真结果证明模型的建立和通过控制PWM电压开关角减少转矩脉动的方法是正确可行的。Based on the mathematical model of the permanent magnet brushless DC motor(BLDCM), the simulative model of the system is built,simulated and analyzed in MATLAB/SIMULINK,and the result is presented. The principle of the torque ripple of the BLDCM is analyzed,and the torque ripple components are reduced by controlling the switching angles of the pulse width modulation(PWM),and the simulation results are given. The simulation results indicate that the presented model and the method of reducing torque ripple components by controlling the switching angles of the PWM are correct and feasible.Key words:SIMULINK;brushless DC motor(BLDCM); modeling; torque; ripples

关 键 词：PWM供电 永磁无刷直流电动机 动态仿真 转矩脉动 SIMULINK 仿真模型 调速系统 

分 类 号：TM351[电气工程—电机]