A Novel Current Detection Technology for a Permanent-Magnet Brushless DC Motor

Abstract:

A novel technique for power electronic switch current detection is introduced in this paper, in which the current-sensor is replaced by electronics circuit. According to the principle that the magnitude of the switch current is proportional to its turned-on voltage drop, the proposed technique utilizes the method of grasping the turned-on voltage drop of the MOSFET to reproduce its current waveform. The appearances of voltage drop of the MOSFET are analyzed and the current reconstruction principles are introduced. Experimental results are given to validate the proposed technique. It has the characteristics of simplicity and inexpensiveness and is worthy of adoption.

• Periodical: Applied Mechanics and Materials (Volume 43)
• Pages: 274-278
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.43.274
• Online since: December 2010
• Authors: Zhan Shi Sheng, Jun Liang, Liang Jing, Dong Hua Zhang
• Keywords: Blushless DC Motor, Current Reconstruction, Current Sensing, Power Converter

References

[1] C.W. Lee, A. Borne, I. Ferain, and et. al.: EEE Transactions on Electron Devices, Vol. 57, no. 3, pp.620-625. (2010).

[2] D.W. Lin, M.L. Cheng, S.W. Wang, and et. al.: IEEE Transactions on Electron Devices, Vol. 57, no. 4, pp.890-897. (2010).

[3] N. Venkatagirish, J. Ritesh, and C.S.W. Jason: IEEE TRANSACTIONS ON ELECTRON DEVICES, Vol. 55, No. 4. (2008).

[4] TANG Ping-hua, DU Kun-mei, LI Tie-cai: ELECTRIC MACHINES AND CONTROL, Vol 12 No 2, pp.156-159. (2008).

[5] Tang Xiao-Yan, Zhang Yi-Men, Zhang Yu-Min: MOSFET, Vol. 58, No. 1, pp.494-497, (2009).

[6] YOU Yi-long, LI Zun-chao, LIU Linlin, XU Jin-peng: JOURNAL OF XI'AN JIAOTONG UNIVERSITY. Vol. 44, No2, pp.77-81. (2010).