摘要
在分析无刷直流电机数学模型基础上,本文提出了一种无传感器转子位置检测的新方法——对三相电压叠加信号的极值进行检测给出开关序列.利用Matlab/Simulink搭建了无刷直流电机仿真模型,仿真系统采用速度、电流双闭环,调节器均采用PI控制.仿真结果验证了该检测方法的有效性.
Based on the mathematical model of the permanentmagnet brushless DC motor （BLDC）, a novel method for detecting rotor position is introduced by analyzing the harmonic signals of back-emf. Three-phase voltages are obtained and their sum is calculated. The extremum points are detected and the commutation state function table is given. A system of modeling and simulation of sensorless BLDC is constructed with Matlab/Simulink. TWO PI controllers are used in the speed and current loops. The validity is testified by the simulation results.
出处
《现代电力》
2007年第2期30-34,共5页
Modern Electric Power
