|
标题：考虑死区补偿的永磁同步电机在线参数辨识范 |
|
作者：惊京，刘莹，程善美 |
|
| 2018年第8期 访问次数：330次 |
|
摘要：针对永磁同步电机控制过程中参数失配问题，深入分析了永磁同步电机的数学模型，设计了基于模型参考自适应系统(MRAS)的参数在线辨识方法。为避免辨识过程中逆变器死区效应的影响，提出一种基于电压模型线性补偿的死区补偿方法，通过分析逆变器插入死区后的电压模型计算出死区压降，将死区压降补偿到MRAS参考模型及自适应律中以提高辨识算法的稳定性和准确性。通过仿真证明了参数在线辨识方法和死区补偿方法的有效性。
关键词：永磁同步电机；模型参考自适应；参数辨识；死区补偿
Abstract: This paper analyzed the mathematical model of permanent magnet synchronous motor aiming at parameters mismatching in control of PMSM. Firstly, an online parameter identification method based on model reference adaptive system (MRAS) was proposed. Secondly, a linear deadtime compensation method based on voltage model of PMSM was proposed, the voltage drop caused by the dead time was calculated by analyzing the voltage model after the deadtime effect was considered, and the deadtime voltage drop was compensated to the MRAS reference model and the adaptive law to improve the stability and accuracy of the identification algorithm. The simulation result proves the validity of online parameter identification and deadtime compensation.
Key words: permanent magnet synchronous motor; model reference adaptive system; parameter identification; deadtime compensation
|
|
| |
|
