| Title |
Restarting Method for EEMF Based Sensorless Permanent Magnet Synchronous Motor Drive Systems |
| Authors |
Young-Jae Lee ; Yeongsu Bak ; Kyo-Beum Lee |
| DOI |
https://doi.org/10.6113/TKPE/2018.24.2.127 |
| Keywords |
PMSM(Permanent Magnet Synchronous Motor) ; Restarting method ; Sensorless control ; Rotor speed estimation ; Rotor angle estimation |
| Abstract |
This paper proposes a restarting method for extended electromotive force (EEMF)-based sensorless permanent magnet synchronous motor (PMSM) drive systems. The sensorless PMSM drive systems generally estimate the rotor speed and angle based on EEMF. However, if the inverter is stopped while the PMSM is rotating, the initial rotor speed and angle are required for restart. Therefore, the proposed restarting method estimates the initial rotor speed and angle using the short-circuit current generated by applying zero voltage vector from the inverter. The validity of the proposed method is verified by simulation and experimental results. |