摘要
在永磁同步电机无位置传感器控制中,系统延时的存在降低了永磁同步电机转子位置观测精度。由于大功率传动系统中逆变器开关频率较低,系统延时的影响尤其明显。针对大功率永磁同步电机(Permanent Magnet Synchronous Motor, PMSM)无位置传感器控制双频计算的特点,分析了系统延时产生的原因及其对转子位置观测的影响,并且根据分析做出了准确的延时补偿,提高了永磁同步电机无位置传感器控制的性能。选择了基于模型参考自适应(Model Reference Adaptive System, MRAS)的永磁同步电机无位置传感器控制进行仿真验证,仿真结果显示经过延时补偿后转子位置观测误差在0°附近,验证了延时分析的正确性及延时补偿的有效性。
In the position sensorless control of permanent magnet synchronous motor(PMSM), the existence of system time-delay reduces the rotor position observation accuracy of PMSM. Due to the low switching frequency of inverter in high-power drive system, the influence of system time-delay is particularly obvious. According to the characteristics of the dual frequency calculation in position sensorless control of high-power PMSM, the causes of system time-delay and its impact on rotor position observation are analyzed in this paper, and the accurate time-delay compensation is made according to the analysis, the performance of position sensorless control of PMSM is improved. The position sensorless control of PMSM based on model reference adaptive system(MRAS) is selected for simulation verification. The simulation results show that the rotor position observation error is around 0° after the time-delay compensation, which verifies the correctness of the time-delay analysis and the effectiveness of the delay compensation.
作者
翁聪
周明磊
游小杰
郝瑞祥
WENG Cong;ZHOU Ming-lei;YOU Xiao-jie;HAO Rui-xiang(School of Electrical Engineering,Beijing Jiaotong University,Beijing 100044)
出处
《导航与控制》
2021年第5期105-112,共8页
Navigation and Control
关键词
永磁同步电机
模型参考自适应
无位置传感器控制
相角调节器
延时分析
permanent magnet synchronous motor(PMSM)
model reference adaptive system(MRAS)
position sensorless control
phase angle regulator
time-delay analysis
