永磁无刷直流电机系统建模研究

System Modeling and Matlab Simulation for PM Brushless DC Machine

从直流电机分析出发 ,建立了带中线电机电路模型 ,分析了转子位置与开关管触发逻辑的关系 ,总结了二者之间的规律。建立在Matlab/Simulink平台上的无刷直流电机系统模型 ,根据系统实际组成与功能分块 ,其电机模型、开关管触发逻辑完全由电路元件构造 ,具有很强的移植性和扩展性。仿真结果表明 。

The modeling and simulation of the PM brushless DC machine system was presented in this paper.On the basis of the magnetic field distribution,the back electromotive force of the machine was formulated,and the circuit model of the electric machine with neutral was brought out.The relation of the machine frame,rotor position and the trigger logic of the power electronics were discussed. The simulation system,developed under Matlab/Simulink platform according to the real system,worked efficiently under four quadrant operation.