Dong Yeop Han, Yongsoo Cho, and Kyo-Beum Lee, "Simple Sensorless Control of Interior Permanent Magnet Synchronous Motor Using PLL Based on Extended EMF,“ Journal of Electrical Engineering & Technology, vol. 12, no. 2, pp. 711–717, Mar. 2017. -SCIE > Paper

This paper proposes an improved sensorless control to estimate the rotor position of an interior permanent magnet synchronous

motor. A phase-locked loop (PLL) is used to obtain the phase angle of the grid. The rotor position can be estimated using a PLL

based on extended electromotive force (EEMF) because the EEMF contains information about the rotor position. The proposed

method can reduce the burden of calculation. Therefore, the control period is decreased. The simulation and experimental results

confirm the effectiveness and performance of the proposed method.