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http://dx.doi.org/10.6113/TKPE.2019.24.1.25

Low-Speed Performance Improvement of Slip Based Sensorless Control for Three-Phase Induction Motor Used in Treadmill  

Lee, Su-Hyoung (Dept. of Electrical Eng., Incheon National University)
Lee, Sang-Hee (Dept. of Electrical Eng., Incheon National University)
Mun, Tae-Yang (Dept. of Electrical Eng., Incheon National University)
Han, Hee-Min (Dept. of Electrical Eng., Incheon National University)
Kim, Joohn-Sheok (Dept. of Electrical Eng., Incheon National University)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.24, no.1, 2019 , pp. 25-32 More about this Journal
Abstract
Recent high-end treadmills are demanding stable performance at lower speeds. In this study, a slip control-based induction motor sensorless algorithm for treadmills, which have heavy load variations, is proposed. A modified Gopinath flux estimator is used to evaluate the rotor flux. Results indicate that a good speed regulation performance is achieved even at a low speed of approximately 3 Hz with a nominal exercise load of 90 kg body weight. The slip calculation method in the stationary coordinate system is adopted to improve the control stability. The proposed algorithm is verified throughout the simulation study using PSIM, and the experimental test consists of a commercial treadmill system.
Keywords
Induction motor; Sensorless control; Treadmill system; Gopinath flux estimator;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 J. S. Lee, "Modal analysis of treadmill machine," Korea Academia-Industrial cooperation Society, Vol. 7, No. 4, pp. 539-544, 2006.
2 H. H. Lee and Y. Khojakhan, “New loss minimization vector control for induction motors,” The Transactions of the Korean Institute of Electrical Engineers, Vol. 60, No. 6, pp. 1140-1145, Jun. 2011.   DOI
3 P. L. Jasen and R. D. Lorenz, “A physically insightful approach to the design and accuracy assessment of flux observers for field oriented induction machine drives,” IEEE Trans. On Ind. Appl., Vol. 30, No. 1, pp. 101-110, Jan./Feb. 1994.   DOI
4 C. C. Wang and C. H. Fang, "Sensorless scalar-controlled induction motor drives with modified flux observer," IEEE Transactions on Energy Conversion, Vol. 18, pp. 181-186, May 2003.   DOI
5 S. S. Han, “Slip estimated sensorless vector controller,” JKIICE, Vol. 14, No. 10, pp. 2299-2304, 2011.
6 G. J. Jo and J. W. Choi, "Realization of voltage model flux observer by using the closed-loop gopinath flux observer of induction motors," Proceedings of the KIEE, pp. 183-186, Oct. 2015.
7 J. Holtz, "Sensorless control of induction motor drives," Proceedings of the IEEE, Vol. 90, pp. 1359-1394, Aug. 2002.   DOI
8 Y. H. Park, J. W. Choi, H. G. Kim, J. K. Kim, Y. T. Choi, E. C. Nho, and T. W. Chun, “A study on the characteristics of thyristor controlled shunt compensator,” The Transactions of the Korean Institute of Power Electronics, Vol. 8, No. 4, pp. 299-306, Aug. 2003.