The Design of New Sensorless BLDCM Control System for Electric Vehicle
Zhibin Ren, Xiping Liu
DOI: 10.4236/epe.2010.23031   PDF    HTML     6,676 Downloads   13,307 Views   Citations


In order to meet the requirement of reliably running which is by Electric Vehicle for motor controller, the paper is focused on a sensorless brushless DC motor controller design and a commutation point method. By utilizing the saturation effect of stator iron core, six short voltage pulses are employed to estimate the initial rotor position. After that a series of voltage pulses are used to accelerate the motor. When the motor reaches a certain speed at which the back-electromotive force (EMF) method can be applied, the running state of the motor is smoothly switched at the moment determined by the relationship between the terminal voltage waveform and the commutation phases. “Lagging 90?-α commutation” is bring forward to overcome the shortages existing in the traditional method. The experimental results verify the feasibility and validity of the proposed method.

Share and Cite:

Z. Ren and X. Liu, "The Design of New Sensorless BLDCM Control System for Electric Vehicle," Energy and Power Engineering, Vol. 2 No. 3, 2010, pp. 208-212. doi: 10.4236/epe.2010.23031.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] R. Krishnan and R. Ghosh, “Staring Algorithm and Performance of A PMDC Brushless Motor Drive System with No Position Sensor,” 20th Annual IEEE Power Electronics Specialists Conference, Milwaukee, Vol. 2, June 1989, pp. 815-821.
[2] J. P. Johnson, M. Ehsani and Y. Guzelgunler, “Review of Sensorless Methods for Brushless DC,” IEEE-IAS/PCA Cement Industry Technical Conference, Roanoke, Vol. 1, April 1999, pp. 143-150.
[3] T. Kim and M. Ehsani, “Sensorless Control of the BLDC Motors from Near-zero to High Speed,” IEEE Transactions Power Electronics, Vol. 19, No. 6, 2004, pp. 1635- 1645.
[4] J. Holtz, “State of the Art of Controlled AC Drive without Speed Sensor,” IEEE Proceedings of the 1995 International Conference on Power Electronics and Drive Systems, Vol. 1, February 1995, pp. 1-6.
[5] T. H. Kim, H. W. Lee, and M. Ehsani, “State of the Art and Future Trends in Position Sensorless Brushless DC Motor/Generator Drives,” 31st Annual Conference of IEEE Industrial Electronics Society, Michigan, November 2005, pp. 1718-1725.
[6] P. P. Acarnley and J. F. Watson, “Review of Position- sensorless Operation of Brushless Permanent-magnet Machines,” IEEE Transactions on Industrial Electronics, Vol. 53, No. 2, April 2006, pp. 352-362.
[7] J. Shao, “An Improved Microcontroller-Based Sensorless Brushless DC (BLDC) Motor Drive for Automotive Applications,” IEEE Transactions on Industry Applications, Vol. 42, No. 5, 2006, pp. 1216-1231.

Copyright © 2024 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.