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http://dx.doi.org/10.6113/TKPE.2012.17.3.238

A Sensorless Speed Control of 2-Phase Asymmetric SRM with Parameter Compensator  

Lim, Geun-Min (Dept. of Mechatronics Engineering, Kyungsung University)
Ahn, Jin-Woo (Dept. of Mechatronics Engineering, Kyungsung University)
Lee, Dong-Hee (Dept. of Mechatronics Engineering, Kyungsung University)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.17, no.3, 2012 , pp. 238-245 More about this Journal
Abstract
This paper presents a sensorless speed control of a 2-phase switch reluctance motor(SRM). The proposed sensorless control scheme is based on the slide mode observer with parameter compensator to improve the estimation performance. In the stand still position, the initial rotor position is determined by pulse current responses of each phase windings and the current difference. In order to determine an accurate initial rotor position, the two initial rotor positions are estimated by the difference of the pulse currents. From the stand still to the operating region, a simple open loop control which determines the commutation sequence by the pulse current of the unexcited phase winding is used. When the motor speed is reached to the sensorless control region, the estimated rotor position and speed by the slide mode observer are used to control the SRM. The flux calculator used in the slide mode observer is designed by phase voltage and the voltage drops in the phase resistance of the winding. The accuracy of the flux calculator is dependent on the phase resistance. For the continuous update of the phase resistance, current gradient at the inductance break point is used in this paper. The error of the estimated rotor position at the current gradient position is used to update the phase resistance to improve the sensorless scheme. The proposed sensorless speed control scheme is verified with a practical compressor used in home appliances. And the results show the effectiveness of the proposed control scheme.
Keywords
SRM; sensorless control; parameter compensator;
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  • Reference
1 Mohammad S. Islam, Iqbal Husain, Robert J. Veillette, Celal Batur, "Design and Performace analysis of Sliding-Mode Observers for Sensorless Operation of Switched Reluctance Motors," IEEE Transactions on Control Systems Technology, Vol. 11, No. 3, pp. 383-389, May 2003.   DOI   ScienceOn
2 Ahmed Khalil, Iqbal Husain, Syed A. Hossain, Suresh Gopalakrishnan, Avoki M. Omekanda, Bruno Lequesne, Harald Klode, "A Hybrid Sensorless SRM Drive With Eight-and Six-Switch Converter Topologies," IEEE Transactions on Industrial Applications, Vol. 31, No. 6, pp. 1647-1655, 2005.
3 Y. C. Lim, H. Y. Yang, D. S. Shin, "The Rotor Position Estimation Techniques of an SRM with Built-in Search Coils at Standstill", Transactions of Korean Institute of Power Electronics, Vol. 10, No. 1, pp. 45-51, 2005.
4 C. H. Yu, T. C. Chen, "Novel sensorless driving method of SRM with external rotor using impressed voltage pulse," IEEE Proc.-Electr. Power Applications., Vol. 153, No. 5, pp. 632-641, 2006.   DOI   ScienceOn
5 T. H. Kim, J. W. Ahn, S. J. Park, "Inductance Reasoning Method for Sensorless Control of an SRM", Transactions of Korean Institute of Power Electronics, Vol. 8, No. 5, pp. 427-434, 2003
6 J. H. Oh, J. W. Lee, B. I. Kwon, "A Study of Adaptive Sliding Mode Observer for a Sensorless Drive System of SRM", Transaction of the Korean Institute of Electrical Engineers B, Vol. 53B, No. 12, pp. 691-699, 2004.
7 Y. C. Kim, C. Y. Won, Y. H. Yoon, "Sensorless Driving System of Switched Reluctance Motor using Impressed Voltage Pulse", Transactions of Korean Institute of Power Electronics, Vol. 10, No. 4, pp. 388-396, 2005.
8 Y. S. Kim, J. H. Shin, L. Y. Yang, "Adaptive Sliding Mode Observer for the Control of Switched Reluctance Motors without Speed and Position Sensors", Transactions of the Korean Institute of Electrical Engineers B, Vol. 49B, No. 11, pp. 763-770, 2000.
9 H. J. Lee, K. D. Kim, J. H. Ahn, J. D. Choi, S. J. Seong, "Error Analysis of a Sensorless Position Estimation Considering Noise for Switched Reluctance Motor", Transactions of Korean Institute of Power Electronics, Vol. 6, No. 1, pp. 74-81, 2001.
10 Kai Xin, Qionghua Zhan, Zhiyuan Ma, Shuanghong Wang, Jianbo Sun, "Sensorless Position Estimation of Switched Reluctance Motors Based on Gradient of Phase Current," IEEE International conference on Industrial Technology 2006, pp. 2509-2513, 2006.