Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
권호 표지

An Analog Encoder for Precise Angle Control of SRM

  • Ahn, Jin-Woo (Dept. of Electrical and Computer Engineering, Kyungsung Univ.) ;
  • Park, Sung-Jun (Dept. of Electrical Engineering, Tongmyong College)
  • Published : 2003.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

In a switched reluctance motor drive, it is important to synchronize the stator phase excitation with the rotor position, because the position of rotor is an essential information. Although high resolution optical encoders or resolvers are used to provide a precise position information, these sensors are expensive. Moreover, in the high-speed region, switching angles are fluctuated back and forth out of the preset value, which is caused by the sampling period of the microprocessor. In this paper, a low cost analog encoder suitable for practical applications is proposed. And the control algorithm to generate switching signals using a Simple digital logic is presented. The validity of the proposed analog encoder with a proper logic controller is verified from the experiments.

Keywords

References

  1. P.J. Lawrenson, J.M. Stephenson, and P.T. Blenkinsop et al, 'Variable-speed Switched Reluctance Motors', IEE Proc. B, Vol. 127, No.4, pp. 253-265, 1980
  2. B.K. Bose, T.J.E. Miller, P.M. Szezesny, and W.H. Bocknell, 'Microcomputer Control of Switched Reluctance Motor', IEEE Trans. Industrial Application, Vol. 22, No. 4, pp. 708-715, 1986 https://doi.org/10.1109/TIA.1986.4504782
  3. Hassan Moghbelli, Gayle E.Adams, and Richard G.Hoft, 'Performance of 10-Hp Switched Reluctance Motor and Comparison with Induction Motors', IEEE Trans. on IA, Vol. 27, No. 3, pp. 531-538, 1991
  4. M. Ehsani, I. Husain, S. Mahajan, and K.R. Ramani, 'New Modulation Encoding Techniques for Indirect Rotor Position Sensing in Switched Reluctance', IEEE Trans. on IA, Vol. 30, No. 1, pp. 85-91, 1994
  5. J.W. Ahn, et al., 'Novel Encoder for SRM Drive with High Resolution Angle Control', Proceedings of IEEE/ISIE 2001, pp. 1781-1785, 2001
  6. M. Ehsani and K.R. Ramani, 'Direct Control Strategies Based on Sensing Inductance in Switched Reluctance Motors', IEEE Trans. on PE, Vol. 11, No. 1, pp. 74-82, 1996
  7. Paul P. Acarnley, et al., 'Detection of Rotor Position in Stepping and Switched Motors by Monitoring of Current Waveforms', IEEE Trans. on IE, Vol. 32. No. 3, pp. 215-222, 1985
  8. P.C. Kjaer, J.J. Gribble, and T.J.E. Miller, 'High-Grade Control of Switched Reluctance Machines', Proc. of IAS/ IEEE Sandiego, California, pp. 92-100, 1996