Sensorless field oriented control using back-EMF and flux observer for a surface mounted permanent magnet synchronous motor

Issue title: Proceedings from the 16th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2013)

Guest editors: Xavier Maldague and Toshiyuki Takagi

Article type: Research Article

Authors: An, Lu^{a; *} | Franck, David^a | Hameyer, Kay^a

Affiliations: [a] Institute of Electrical Machines, RWTH Aachen University, Aachen, Germany | Université Laval, Canada | Tohoku University, Japan

Correspondence: [*] Corresponding author: Lu An, Institute of Electrical Machines, RWTH Aachen University, Schinkelstr. 4, 52056 Aachen, Germany. E-mail: Lu.An@iem.rwth-aachen.de

Abstract: This paper proposes a Sensorless Field Oriented Control for surface mounted permanent magnet synchronous motor combining two approaches for different rotor speed ranges. The active flux observer is applied at low speed and combined with a back-EMF observer at high speed. This combination allows for an improvement of the rotor position estimation for a large speed range and is therefore resulting in a higher stability of the sensorless control scheme when compared to the conventional back EMF method. The presented approach is discussed based on simulations.

Keywords: Back-EMF, flux observer, permanent magnet synchronous motor, sensorless speed control

DOI: 10.3233/JAE-141915

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 45, no. 1-4, pp. 845-850, 2014