| Title |
A Simplified Analysis Approach on the Rotor Position Detection Error in Sensorless Interior Permanent Magnet Brushless DC Motor Drives |
| Authors |
Kwang-Woon Lee ; Tae-Sik Park |
| DOI |
10.6113/TKPE/2016.21.5.449 |
| Keywords |
Interior permanent magnet BLDCM(Brushless DC Motor); Sensorless control; Rotor position detection error |
| Abstract |
This paper presents a simplified analysis on the rotor position detection error in sensorless interior permanent magnet brushless DC motor (BLDCM) drives, wherein terminal voltage sensing based on the back-electromotive force (back-EMF) zero-crossing point detecting circuitry is employed. The effect of a rotor saliency on the back-EMF's zero-crossing point detection is analyzed using the extended EMF-based voltage equation of the interior permanent BLDCM in a stationary reference frame, and thus the overall analysis is considerably simplified compared to the conventional one. Simulation results are provided to verify the effectiveness of the proposed method. |