Skip to main content
Log in

Extracting DC bus current information for optimal phase correction and current ripple in sensorless brushless DC motor drive

  • Published:
Journal of Zhejiang University SCIENCE C Aims and scope Submit manuscript

Abstract

Brushless DC motor (BLDCM) sensorless driving technology is becoming increasingly established. However, optimal phase correction still relies on complex calculations or algorithms. In finding the correct commutation point, the problem of phase lag is introduced. In this paper, we extract DC bus current information for auto-calibrating the phase shift to obtain the correct commutation point and optimize the control of BLDC sensorless driving. As we capture only DC bus current information, the original shunt resistor is used in the BLDCM driver and there is no need to add further current sensor components. Software processing using only simple arithmetic operations successfully accomplishes the phase correction. Experimental results show that the proposed method can operate accurately and stably at low or high speed, with light or heavy load, and is suitable for practical applications. This approach will not increase cost but will achieve the best performance/cost ratio and meet market expectations.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Abolfazl, H.N., Abolfazl, V., Hassan, M., 2009. Low-cost senseless control of four-switch, brushless DC motor drive with direct back-EMF detection. J. Zhejiang Univ.-Sci. A, 10(2):201–208. [doi:10.1631/jzus.A0820097]

    Article  MATH  Google Scholar 

  • Acarnley, P.P., Watson, J.F., 2006. Review of position sensorless operation of brushless permanent-magnet machines. IEEE Trans. Ind. Electron., 53(2):352–362. [doi:10.1109/TIE.2006.870868]

    Article  Google Scholar 

  • Chen, C.H., Cheng, M.Y., 2006. Design of a multispeed winding for a brushless DC motor and its sensorless control. IET Electr. Power Appl., 153(6):834–841. [doi: 10.1049/ip-epa:20060073]

    Article  Google Scholar 

  • Chen, H.C., Chang, Y.C., Huang, C.K., 2007. Practical sensorless control for inverter-fed BDCM compressors. IET Electr. Power Appl., 1(1):127–132. [doi:10.1049/iet-epa:20060162]

    Article  Google Scholar 

  • Chen, H.C., Tsai, T.Y., Huang, C.K., 2009. Low-speed performance comparisons of back-EMF detection circuits with position-dependent load torque. IET Electr. Power Appl., 3(2):160–169. [doi:10.1049/iet-epa:20080017]

    Article  Google Scholar 

  • Chuang, H.S., Ke, Y.L., Chuang, Y.C., 2009. Analysis of commutation torque ripple using different PWM modes in BLDC motors. IEEE Industrial Commercial Power System Technical Conf., p.1–6. [doi:10.1109/ICPS.2009.5463966]

    Google Scholar 

  • Dixon, J.W., Leal, L.A., 2002. Current control strategy for brushless DC motors based on a common DC signal. IEEE Trans. Power Electron., 1(2):232–240. [doi:10.1109/63.988834]

    Article  Google Scholar 

  • Gambetta, D., Ahfock, A., 2009. New sensorless commutation technique for brushless DC motors. IET Electr. Power Appl., 3(1):40–49. [doi:10.1049/iet-epa:20070517]

    Article  Google Scholar 

  • Han, S.Q., Zhang, Z., 2012. Design of control system for brushless DC motor based on DSP. 2nd Int. Conf. on Materials, Mechatronics and Automation. Lecture Notes in Information Technology, 15:58–64.

    MathSciNet  Google Scholar 

  • Ho, Z.S., Uang, C.M., Wang, P.C., 2013. Full speed range senesorless circuit for BLDC motor driver. Electronic Technology Symp. Conf., p.519–522.

    Google Scholar 

  • Kim, T.H., Ehsani, M., 2003. An error analysis of the sensorless position estimation for BLDC motors. IEEE Industry Applications Conf. 38th IAS Annual Meeting, p.611–617. [doi:10.1109/IAS.2003.1257564]

    Google Scholar 

  • Liu, Y., Zhu, Z.Q., Howe, D., 2005. Direct torque control of brushless DC drives with reduced torque ripple. IEEE Trans. Ind. Appl., 41(2):599–608. [doi:10.1109/IAS.2004. 1348810]

    Article  Google Scholar 

  • Salah, W.A., Ishak, D., Hammadi, K.J., 2011. Minimization of torque ripples in BLDC motors due to phase commutation—a review. Przeglad Elektrotechniczny, 87:182–188.

    Google Scholar 

  • Shen, J.X., Tseng, K.J., 2003. Analyses and compensation of rotor position detection error in sensorless PM brushless DC motor drives. IEEE Trans. Energy Conv., 18(1):87–93. [doi:10.1109/TEC.2002.808339]

    Google Scholar 

  • Uang, C.M., Ho, Z.S., Wang, P.C., et al., 2011. Sensorless position optimal control strategy of brushless DC motor. IEEE 9th Int. Conf. on Power Electronics and Drive Systems, p.653–658. [doi:10.1109/PEDS.2011.6147321]

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Chii-maw Uang.

Additional information

Project supported by the I-Shou University (No. ISU99-01-04), the Holtek Semiconductor Inc. (No. ISU99-e-02), and the DurQ Machinery Corp. (No. ISU101-IND-13)

Rights and permissions

Reprints and permissions

About this article

Cite this article

Ho, Zs., Uang, Cm. & Wang, Pc. Extracting DC bus current information for optimal phase correction and current ripple in sensorless brushless DC motor drive. J. Zhejiang Univ. - Sci. C 15, 312–320 (2014). https://doi.org/10.1631/jzus.C1300247

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1631/jzus.C1300247

Key words

CLC number

Navigation