Rotor Speed and Stator Resistance Identification of Direct Torque Control for Induction Motor Based on Mutual MRAS

Abstract:

Based on the dynamic mathematical model of induction motor, the mutual model reference adaptive system method (MRAS) for rotor speed identification is proposed to implement a speed sensorless direct torque control of induction motor. The model reference adaptive theory is flexibly used in the rotor speed and the stator resistance online identification. The reference model and adjustable model used in the mutual MRAS scheme are interchangeable. Therefore, The induction motor speed sensorless direct torque control system can obtain high-precision speed identification. Computer simulations and experimental results show that the method can solve the problems of speed control accuracy and system stability under the influence of motor parameter variation. The low speed performance of DTC is also improved.

• Periodical: Advanced Materials Research (Volumes 383-390)
• Pages: 2458-2463
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.383-390.2458
• Online since: November 2011
• Authors: Zhi Ting She, Jun Bo Yuan, Yong Zheng, Yong Jin Peng
• Keywords: Direct Torque Control (DTC), Induction Motor (IM), MRAS, Speed-Sensorless

References

[1] Takahashi and T. Noguchi, A new quick response and high efficiency control strategy of an induction motor, IEEE Transactions on Industry Applications, vol. 22, No. 5, 820–827, (1986).

DOI: 10.1109/tia.1986.4504799

[2] C. Lascu et al., A sensorless hybrid DTC drive for high-volume low-cost applications, IEEE Trans. Ind. Electron., vol. 51, no. 5, p.1048–1055, Oct. (2004).

DOI: 10.1109/tie.2004.834966

[3] Holtz J. Sensorless control of induction motor drives[J]. Proceedings of the IEEE, Aug. 2002, 90 (8): 1359-1394.

DOI: 10.1109/jproc.2002.800726

[4] M. S. Zaky, M. M. Khater, S. S. Shokralla, and H. A. Yasin, Wide speed-range estimation with online parameter identification schemes of sensorless induction motor drives, IEEE Trans. Ind. Electron., vol. 56, no. 5, pp.1699-1707, May (2009).

DOI: 10.1109/tie.2008.2009519

[5] K. Nishibata, M. Ishida, S. Doki, T. Masuzawa, M. Fujitsuna, Sensorless Control Method for Ultra High Speed Drive of Induction Machine utilizing Rotor Slot harmonics, The Papers of Joint Technical Meeting on SPC and IEA, IEE Japan, pp.81-84, (2006).

DOI: 10.1109/icit.2006.372453

[6] M. Barut, S. Bogosyan, and M. Gokasan, Speed-sensorless estimation for induction motors using extended Kalman filters, IEEE Trans. Ind. Electron., vol. 54, no. 1, p.272–280, Feb. (2007).

DOI: 10.1109/tie.2006.885123

[7] Q. Gao, G. Asher and M. Sumner, Sensorless Position and Speed Control of Induction Motors using High-Frequency Injection and Without Offline Precommissioning, , IEEE Trans. Ind. Electronics, vol. 54, issue 5, pp.2474-2481, Oct. (2007).

DOI: 10.1109/tie.2007.900364

[8] T. Orlowska-Kowalska andM. Dybkowski, Improved MRAS-type speed estimator for the sensorless induction motor drive, in Proc. 19th Symp. EPNC, Maribor, Slovenia, 2006, p.105–106.

DOI: 10.1109/eurcon.2009.5167726