Sensorless Control for the Synchronous Reluctance Motor Using Reference Flux Estimation

  • Ahn Joon-Seon (Dept. of Electrical Engineering, Hanyang University) ;
  • Kim Sol (Dept. of Electrical Engineering, Yuhan College) ;
  • Kim Yong-Tae (Dept. of Electrical Engineering, National Wonju College) ;
  • Lee Ju (Dept. of Electrical Engineering, Hanyang University)
  • Published : 2005.12.01


The complex sensorless control scheme is not practical for use in the field of home appliance systems because it is not economical. Therefore, it is necessary to introduce a simplified sensorless control scheme that is composed of least calculation to estimate the rotor position. This paper presents the principle of the rotor position estimation with comparison of the estimated flux linkage and reference flux linkage. In order to verify the feasibility of the control scheme, ACSL is used for the simulation and TI DSP TMS320F240 is used for the experiment.


  1. Ion Boldea, Reluctance Synchronous Machines and Drives. Oxford, London, 1996
  2. Tomonobu Senjyu, Takeshi Shingaki, and Katsumi Uezato, 'Sensorless Vector Control of Synchronous Reluctance Motors with Disturbance Torque Observer,' IEEE Trans. Ind. Elec., Vol. 48, No.2, pp. 402-407, 2001
  3. Ciufo P., Platt D., 'Sensorless rotor position and speed estimation for a synchronous reluctance motor,' IEE Proceeding of Electric Power Applications, vol. 150, no, 2, pp. 158-164, March 2003
  4. T. Matsuo and T. A. Lipo, 'Rotor position detection scheme for synchronous reluctance motor based on current measurements,' IEEE Transaction on Industry Applications, vol. 31, no. 4, pp. 860-868, July 1995
  5. Jung-Ik Ha, Seog-Joo Kang, Seung-Ki SuI, 'Positioncontrolled synchronous reluctance motor without rotational transducer,' IEEE Transactions on Industry Applications, vol. 35, no. 6, pp. 1393 - 1398, Nov. 1999
  6. Schroedl M., Weinmeier P., 'Sensorless control of reluctance machines at arbitrary operating conditions including standstill,' IEEE Transactions on Power Electronics, vol. 9 no. 2, pp. 225-231, March 1994