Error Compensation of Stator Resistance Estimation in Sensorless Induction Motor Drives

Abstract:

This paper proposed a method of stator resistance estimation for sensorless induction motor (IM) drives based on a model reference adaptive system (MRAS). In this scheme, the error between estimated stator current and real stator current is regarded as the system error to estimate the rotor speed. Because of the motor parameters vary with inner temperature of the motor, the influence of motor speed estimation due to stator resistance identification error was analyzed. The error compensation method for stator resistance estimation was proposed. The algorithm is given to compensate the stator resistance deviation, which results in the speed estimation error. Simulation and experimental results show the good performance for the proposed scheme in speed and robustness for sensorless induction motor drives.

• Periodical: Applied Mechanics and Materials (Volumes 241-244)
• Pages: 1812-1815
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.241-244.1812
• Online since: December 2012
• Authors: Zi Cheng Li, Zhou Ping Yin, Li Zeng
• Keywords: Induction Motor (IM), MRAS, Speed Sensorless, Stator Resistance Estimation

References

[1] Y. A. Kwon, and S. K. Kim "A high-performance strategy for sensorless induction motor drive using variable link voltage," IEEE Transactions on Power Electronics, vol. 22, no.1, p.329–332, 2007.

DOI: 10.1109/tpel.2006.887178

[2] M. Ghanes, L. J. De, and A. Glumineau, "Cascade and high-gain observers comparison for sensorless closed-loop induction motor control," IET Control Theory and Applications, vol. 2, no.2, p.133–150, 2008.

DOI: 10.1049/iet-cta:20070058

[3] Z. Li, S. Cheng, and K. Cai, "The simulation study of sensorless control for induction motor drives based on MRAS," the 7th International Conference on System Simulation and Scientific Computing, vol.1, p.235–239, 2008.

DOI: 10.1109/asc-icsc.2008.4675361

[4] J. Guzinski, H. Abu-Rub, and H. A. Toliyat, "An advanced low-cost sensorless induction motor drive," IEEE Transactions on Industry Applications, vol. 39, no.6, p.1757–1764, 2003.

DOI: 10.1109/tia.2003.819438

[5] G. Pellegrino, P. Guglielmi, E. Armando, and R. I. Bojoi, "Self-commissioning algorithm for inverter nonlinearity compensation in sensorless induction motor drives," IEEE Transactions on Industry Applications, vol. 46, no.4, p.1416–1424, 2010.

DOI: 10.1109/tia.2010.2049554

[6] A. Shen, and Z. Li, "The vector control in sensorless induction motor drives based on MRAS," Journal of Huzhong University of Science and Technology, vol. 33, no.12, p.51–53, 2005.