Sensorless Vector Control for Permanent Magnet Synchronous Motor based on Estimation of Model Error

摘要

W artykule przedstawiono metod? estymacji pozycji wirnika w maszynie PMSM. Algorytm opiera si? na pomiarach pr?dów fazowych, na podstawie których dokonywana jest estymacja, eliminuj?c w ten sposób parametry maszyny. Przedstawiono wyniki symulacyjne i eksperymentalne, potwierdzaj?ce skuteczno?? dzia?ania.%A method, which estimates the position of the rotor based on arithmetic model of the motor, is presented in this paper. In this method, mathematical mode of PMSM is regarded as reference model. By detecting the phase current of PMSM, the real position of the rotor of PMSM is calculated. And this method eliminates the parameters variation of the PMSM. Simulation and experimental results proved that the proposed method was capable of precisely estimating the rotor position and speed. It also achieved good static and dynamic speed. Also, the parameters are fixed according to this method, so the simulation model of the whole PMSM speed servo is more precise.