Rotor Position Detection Algorithm with Mechanical Load Asymmetric Error Determination Ability in SR Motor Drive
Subject Areas : electrical and computer engineeringE. Khiabani 1 , H. Moradi Cheshmeh-Beigi 2
1 - Razi University
2 - Razi University
Abstract :
This paper introduces a new sensorless rotor position detection technique with the mechanical load asymmetric error determines ability for switched reluctance motor drives. In presented paper combination of pulse injection technique and digital pulse position modulation are employed for control of SR motor. In this method, a single high-frequency pulse is injected in an idle phase to determine the rotor position and estimates the rotor position through analysis of the resultant current after voltage pulse injection. Since the number of injected pulses is constant, in terms of the proper functioning of the motor, output bit stream has a fixed length and is proportional to the mechanical load torque. In the event of mechanical failure as a result of fluctuations in the mechanical load, the number of bits according to the error rate will change, which counts the number of output bits detection circuit , errors in mechanical load is determined. Proposed method decrease the injuries caused by asymmetry error in mechanical load connected to the motor shaft. The proposed sensorless method has been simulated using Matlab-Simulink and implemented on an experimental setup in real time to validate its performance. The results obtained demonstrate the feasibility and practicability of the method.
[1] R. Krishnan, "Whither motor drives: a case study in switched reluctance motor drives," in Proc. Int. Conf. on Electrical Machines and Systems, ICEMS'07, vol. 1, pp. 472-480, Oct. 2007.
[2] P. Laurent, M. Gabsi, and B. Multon, "Sensorless rotor position detection using resonant method for switched reluctance motors," in IEEE Conf. on Industry Applications Society Annual Meeting, vol. 1, pp.687-694, 2-8 Oct. 1993.
[3] G. Suresh, B. Fahimi, and M. Ehsani, "Improvement of the accuracy and speed range in sensorless control of switched reluctance motors," in Proc. 13th Annual Applied Power Electronics Conf. and Exposition, APEC'98, vol. 2, pp. 771-777, 15-19 Feb. 1998.
[4] M. Ehsani, I. Husain, S. Mahajan, and K. R. Ramani, "New modulation encoding techniques for indirect rotor position sensing in switched reluctance motors," IEEE Trans. on Ind. Applicat, vol. 30, no. 1, pp. 85-91, Jan./Feb. 1994.
[5] M. Ehsani, I. Husain, and A. B. Kulkarni, "Elimination of discrete position sensor and current sensor in switched reluctance motor drives," IEEE Trans. on Ind. Applicat, vol. 28, no. 1, pp. 128-135, Jan./Feb. 1992.
[6] G. Gallegos-Lopez, P. C. Kjaer, and T. J. E. Miller, "High-grade position estimation for SRM drives using flux linkage/current correction model-industry applications," IEEE Trans. on Ind. Applicat, vol. 35, no. 4, pp. 859-869, Jul./Aug. 1999.
[7] J. P. Lyons, S. R. MacMinn, and M. A. Preston, "Flux-current methods for SRM rotor position estimation," in Proc. of the 1991 IEEE Industry Applications Society Annual Meeting, pp. 482-487, 28 Sept.-4 Oct. 1991.
[8] A. Lumsdaine and J. H. Lang, "State observers for variable-reluctance motors," IEEE Trans. Ind. Electron, vol. 37, no. 2, pp. 133-142, Apr. 1990.
[9] W. D. Harris and J. H. Lang, "A simple motion estimator for variable-reluctance motors," IEEE Trans. on Ind. Applicat, vol. 26, no. 2, pp. 237-243, Mar./Apr. 1990.
[10] A. Brosse, G. Henneberger, M. Schniedermeyer, R. D. Lorenz, and N. Nagel, "Sensorless control of a SRM at low speeds and standstill based on signal power evaluation," in Proc. of 24th Annual Conf. of the IEEE Industrial Electronics Society, IECON'98, vol. 3, pp. 1538-1543, 31 Aug.-4 Sept. 1998.
[11] S. Saha, K. Ochiai, T. Kosaka, N. Matsui, and Y. Takeda, "Developing a sensorless approach for switched reluctance motors from a new analytical model," in Proc. of 34th Annual Meeting of the IEEE Industry Applications, pp. 525-532, 3-7 Oct. 1999.
[12] G. Suresh, B. Fahimi, K. M. Rahman, and M. Ehsani, "Inductance based position encoding for sensorless SRM drives," in Proc. of 30th Annual IEEE Power Electronics Specialists Conf., vol. 2, pp. 832-837, 1-1 Jul. 1999.
[13] A. Cheok and N. Ertugrul, "A model free fuzzy logic based rotor position sensorless switched reluctance motor drives," in Proc. of the IEEE Industry Applications Conf. 31st IAS Annual Meeting, IAS'96, vol. 1, pp. 76-83, 6-10 Oct. 1996.
[14] D. S. Reay and B. W. Williams, "Sensorless position detection using neural networks for the control of switched reluctance motors," in Proc. IEEE Int. Conf. on Control Applications, vol. 2, pp. 1073-1077, 22-27 Aug. 1999.
[15] J. Cai, Z. Deng, and R. Hu, "Position signal faults diagnosis and control for switched reluctance motor," IEEE Trans. Magn., vol. 50, no. 9, pp. 1-11, Sept. 2014.
[16] N. S. Gameiro and A. J. Marques Cardoso, "A new method for power converter fault diagnosis in SRM drives," IEEE Trans. on Ind. Applicat, vol. 48, no. 2, pp. 653-662, Mar./Apr. 2012.
[17] J. F. Marques, J. O. Estima, N. S. Gameiro, and A. J. Marques Cardoso, "A new diagnostic technique for real-time diagnosis of power converter faults in switched reluctance motor drives," IEEE Trans. on Ind. Applicat, vol. 50, no. 3, pp. 1854-1860, May/Jun. 2014.
[18] H. Chen and S. Lu, "Fault diagnosis digital method for power transistors in power converters of switched reluctance motors," IEEE Trans. Ind. Electron, vol. 60, no. 2, pp. 749-763, Feb. 2013.
[19] H. Torkaman, E. Afjei, and P. Yadegari, "Static, dynamic, and mixed eccentricity faults diagnosis in switched reluctance motors using transient finite element method and experiments," IEEE Trans. Magn, vol. 48, no. 8, pp. 2254-2264, Aug. 2012.
[20] Y. Hu, Y. Liu, and W. Ding, "Performance evaluation of a fault-tolerant decoupled dual-channel switched reluctance motor drive under open-circuits," IET Electric Power Applications, vol. 8, no. 4, pp. 117-130, Apt. 2014.
[21] M. Ruba, L. Szabo, and I. A. Viorel, "Modular stator switched reluctance motor for fault tolerant drive systems," IET Electric Power Applications, vol. 7, no. 3, pp. 159-169, Mar. 2013.
[22] H. Torkaman, N. Faraji, and M. S. Toulabi, "Influence of rotor structure on fault diagnosis indices in two-phase switched reluctance motors," IEEE Trans. Magn, vol. 50, no. 3, pp. 136-143, Mar. 2014.
[23] W. Wang and B. Fahimi, "Fault resilient strategies for position sensorless methods of switched reluctance motors under single and multiphase fault," IEEE J. Emerg. Sel. Topics Power Electron, vol. 2, no. 2, pp. 190-200, Jun. 2014.
