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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

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


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

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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.

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author="Zu-sheng Ho, Chii-maw Uang, Ping-chieh Wang",
journal="Journal of Zhejiang University Science C",
publisher="Zhejiang University Press & Springer",

%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

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

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



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


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