摘要
给出了一种改进的基于信号注入的电机转子位置观测方法。由于凸极效应的存在,注入的高频电压信号引起的高频电流信号中将包含转速信息,通过相干检波和适当的信号处理,可以分离出转子位置信息。仿真实验表明,此方法检测精度高,且不依赖任何电机参数,具有很好的鲁棒性。
In this paper, a method to observe rotor position which is based on high frequency signal injection is presented. The speed information is included in the wave form of the high frequency current. Through demodulation and signal processing, the rotor position is obtained. The simulation experiment results demonstrate that this method is effective to observe the initial rotor position and the position when rotor runs during the low speed range.
出处
《电机与控制应用》
北大核心
2006年第3期30-34,共5页
Electric machines & control application
关键词
永磁同步电机
无速度传感器
高频注入
位置检测
permament magnet synchronous motor
sensorless
high frequency injection
position detection
