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Simple Sensorless Control of Interior Permanent Magnet Synchronous Motor Using PLL Based on Extended EMF

  • Han, Dong Yeob (Carrier) ;
  • Cho, Yongsoo (LG Electronics) ;
  • Lee, Kyo-Beum (Dept. of Electrical and Electronic Engineering, Ajou University)
  • Received : 2016.07.01
  • Accepted : 2016.10.28
  • Published : 2017.03.01

Abstract

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.

Keywords

Interior permanent magnet synchronous motor;Extended electromotive force;Sensorless control;Phase-locked loop

Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

References

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