A PC Based for PMSM Sensorless Control Using Superposition Theorem

중첩의 원리를 적용한 PC 베이스 영구자석 동기 전동기 센서리스제어

  • Published : 2002.06.01

Abstract

This paper proposes a sensorless drive of a permanent magnet synchronous motor. In general EMF is used to calculate the current of Permanet Magnet Synchronous Motor(PMSM). However the current has a lag component by a time constant. So it is difficult to directly calculate a position angle. To estimate the position using the current without a lag component in this paper, the controller calculates the motor current by using a superposition principle in the equivalent circuit and then compensates lag component with a time constant of the motor. Therefore the estimated motor current without a lag compoent can be obtained and it is used to calculate the rotor position indirectly. In order to confirm the effectiveness of the proposed algorithm, experimental results are shown in detail.

Keywords

References

  1. P. Vas, Sensorless Vector and Direct Torque Contorl. Oxford Univ. Press, 1998
  2. K. Rajashekara, A. kawamura and K. Matsuse, Sensorless Control of AC Motor Drives, IEEE Press, 1996
  3. T. Endo, F. Tajima, et al. 'Microcomputer Controlled Brushless Motor Without a Shaft Mounted Position Sensor', International Power Electronics Conference, Tokyo, pp.1477-1486, 1983
  4. J. C. Moreira, 'Indirect Sensing for Rotor Flux Position of Permanent Magnet AC Motors Operation in a Wide Speed Range', Conference Record of IEEE IAS Annual Meeting, pp.401-407, 1994 https://doi.org/10.1109/IAS.1994.345473
  5. R. Wu and G. R. Slemon, 'Brushless dc Motor Control Without Position and Speed Sensors', IEEE, IA-28, No. 1, pp.120-127, 1992 https://doi.org/10.1109/28.120220
  6. R, Dhaoudi, N. Mohan, and L. Norum, 'Design and Implementation of and Extended Kalman Filter for the State Estimation of a Permanent Magnet Synchronous Motor', IEEE Transations on Power Electronics, Vol.6, No.3, pp.491-497, July, 1991 https://doi.org/10.1109/63.85891
  7. H. W. Kim and S. K. Sul, 'A New Motor Speed Estimator Using Kalman Filter in Low-Speed Range', IEEE Trans. on Industrial Electronics, Vol. 43, No. 4, pp. 498-504, August, 1996 https://doi.org/10.1109/41.510642