直流无刷电机控制系统的建模与仿真

Modeling and Simulation of Controlling System for Brushless DC Motor

为了验证各种控制算法、控制策略和电机参数设计的合理性,基于Matlab/simulink仿真平台构建了整个三角波PWM控制直流无刷电机控制系统的仿真模型,并详细介绍了控制系统的各个子模块.从直流无刷电机基本的磁链方程入手,分析了两相导通三相六状态星形方波直流无刷电机的运行模式.仿真结果表明,该控制系统模型具有转速、转矩响应好和仿真速度快的优点.

In order to verify the rationality of the controlling algorithms, the controlling strategies and the motor parameters, a simulation model of the controlling system for the brushless DC motor controlled by a triangle-wave PWM is constructed based on the simulation platform of Matlab/simulink. The sub-modules of the controlling system are then introduced in detail. Moreover, according to the basic flux linkage equations of brushless DC motor, the operating mode of the three-phase square-wave motor with wye-connected phase windings and two mosfets is analyzed. The simulated results indicate that the proposed torque, and possesses quick simulation pace. model has a good response to the rotation speed and rotation