DocumentCode
1235855
Title
A novel sensorless control method for brushless DC motor
Author
Wang, H.-B. ; Liu, H.-P.
Author_Institution
State Key Lab. of Power Transm. Equip. & Syst. Security & New Technol., Chongqing Univ., Chongqing
Volume
3
Issue
3
fYear
2009
fDate
5/1/2009 12:00:00 AM
Firstpage
240
Lastpage
246
Abstract
The authors present the theory and implementation of a novel sensorless control method for the interior permanent magnet (IPM) brushless DC motor (BLDCM). The proposed new sensorless technique can accurately detect the zero-cross point (ZCP) of back electromotive force (BEMF), which is based on a comparison of the terminal voltage of the un conducting phase during the first and second part of a pulse width modulation (PWM) cycle. Compared with the conventional BEMF sensorless approach, the proposed new sensorless method solves the problem of the sensorless BLDCM drives at very low speeds. Experimental results confirm the validity of the new method.
Keywords
brushless DC motors; machine control; permanent magnet motors; permanent magnets; pulse width modulation; back electromotive force; brushless DC motor; interior permanent magnet; pulse width modulation; sensorless control method; zero-cross point;
fLanguage
English
Journal_Title
Electric Power Applications, IET
Publisher
iet
ISSN
1751-8660
Type
jour
DOI
10.1049/iet-epa.2008.0168
Filename
4814329
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