Full Text:   <1726>

Summary:  <473>

CLC number: TM301.2

On-line Access: 2014-04-10

Received: 2013-09-06

Revision Accepted: 2014-01-15

Crosschecked: 2014-03-17

Cited: 1

Clicked: 3114

Citations:  Bibtex RefMan EndNote GB/T7714

-   Go to

Article info.
1. Reference List
Open peer comments

Journal of Zhejiang University SCIENCE C 2014 Vol.15 No.4 P.312-320

http://doi.org/10.1631/jzus.C1300247


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


Author(s):  Zu-sheng Ho, Chii-maw Uang, Ping-chieh Wang

Affiliation(s):  Department of Electronic Engineering, I-Shou University, Taiwan 84001, Kaohsiung

Corresponding email(s):   ucmk@isu.edu.tw

Key Words:  Brushless motors, Electric motors, Motor drives, Phase control, Phase estimation, Sensorless control


Share this article to: More <<< Previous Article|

Zu-sheng Ho, Chii-maw Uang, Ping-chieh Wang. Extracting DC bus current information for optimal phase correction and current ripple in sensorless brushless DC motor drive[J]. Journal of Zhejiang University Science C, 2014, 15(4): 312-320.

@article{title="Extracting DC bus current information for optimal phase correction and current ripple in sensorless brushless DC motor drive",
author="Zu-sheng Ho, Chii-maw Uang, Ping-chieh Wang",
journal="Journal of Zhejiang University Science C",
volume="15",
number="4",
pages="312-320",
year="2014",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.C1300247"
}

%0 Journal Article
%T Extracting DC bus current information for optimal phase correction and current ripple in sensorless brushless DC motor drive
%A Zu-sheng Ho
%A Chii-maw Uang
%A Ping-chieh Wang
%J Journal of Zhejiang University SCIENCE C
%V 15
%N 4
%P 312-320
%@ 1869-1951
%D 2014
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.C1300247

TY - JOUR
T1 - Extracting DC bus current information for optimal phase correction and current ripple in sensorless brushless DC motor drive
A1 - Zu-sheng Ho
A1 - Chii-maw Uang
A1 - Ping-chieh Wang
J0 - Journal of Zhejiang University Science C
VL - 15
IS - 4
SP - 312
EP - 320
%@ 1869-1951
Y1 - 2014
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.C1300247


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.

撷取母线电流信息 优化无传感器无刷直流电机驱动相位与转矩

研究目的:无刷直流电机进行无传感器驱动时,常因低通滤波电路或高速、高负载运行造成驱动相位不正确,从而产生较大的驱动电流涟波。目前,用于改善电流涟波的算法过于复杂。本文提出一种简单算法,可以减少微处理器计算量,使得利用一般功能的微处理器即可实现相位优化的无感驱动控制。
创新要点:提出撷取母线电流的新算法:将一个电气周期的电流分成二个区间,由这二个区间的变化得知电机驱动时的相位信息,藉由相位控制达到驱动相位优化目的。整个算法只需加、减运算,微处理器无需乘法器或数字讯号处理相关的高级数学运算单元,即可达到实时驱动相位的效果。
方法提亮:只使用一个电流侦测电阻,配合简单算法,即可分辨电机驱动时的相位信息,从而藉由相位控制对死循环作相位补偿,改善了驱动电流的涟波,以达到最小涟波的驱动相位,有效地提高了电机运转效率。
重要结论:本文研究顺利简化了对无刷直流电机无传感器驱动时相位讯息的判断。实验证明,在相同脉冲宽度调制下,所提算法不仅改善了无传感器驱动电路或Hall安装偏移造成的相位不正确问题,更可以改善高转速下电感效应造成的电流拖尾问题,进而减小了转矩涟波的波动,还可以得到提升转速的效果。此算法简单的结构使得未来转矩优化将不再受限于高阶微处理器的运算能力。

关键词:无刷直流电机;电动机;电机驱动;相位控制;相位估测;无传感器控制

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

[1]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.

[2]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.

[3]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.

[4]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.

[5]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.

[6]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.

[7]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.

[8]Gambetta, D., Ahfock, A., 2009. New sensorless commutation technique for brushless DC motors. IET Electr. Power Appl., 3(1):40-49.

[9]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.

[10]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.

[11]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.

[12]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.

[13]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.

[14]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.

[15]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.

Open peer comments: Debate/Discuss/Question/Opinion

<1>

Please provide your name, email address and a comment





Journal of Zhejiang University-SCIENCE, 38 Zheda Road, Hangzhou 310027, China
Tel: +86-571-87952783; E-mail: cjzhang@zju.edu.cn
Copyright © 2000 - Journal of Zhejiang University-SCIENCE