TY - JOUR AU - Ngo Manh Tung, AU - Pham Quang Dang, AU - Nguyen Huy Phuong, AU - Nguyen Quang Dich, AU - Le Duc Thinh, AU - Hoang Duc Chinh, AU - Lam, Nguyen Tung PY - 2022/06/06 Y2 - 2024/03/29 TI - Sensorless Speed Control of Axial Gap Permanent Magnet Motor Using Sliding Mode Observer JF - Measurement, Control, and Automation JA - MCA VL - 3 IS - 1 SE - DO - UR - https://mca-journal.org/index.php/mca/article/view/76 SP - 23-29 AB - <p>The permanent magnet synchronous motor drive system incorporates magnetic bearings to perform high speed control and balance rotor control between the two stators. The paper designed a system to perform adjusting motor speed sensor-less based on measured current, axial position and voltage reference components. The electromotive force (back-EMF) generated in the stator is estimated by a Sliding mode observer. The angular position and velocity rotor is calculated through the <em>α-β</em> com-ponents of the back-EMF. An improved phase-locked loop to correct the estimated angular position to exactly follow the true value. The motor drive is built in a vector control structure based on field-oriented control. The simulation results show that the proposed phase-locked loop-coupled observer is fully capable of meeting system control requirements in the medium speed range and above.</p> ER -