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2013 (Vol. 6, Issue: 13)
Article Information:

A Novel Control Method for BLDCM Based on Phase Back-EMF Observation

Pan Lei, Wang Bei-Bei and Sun He-Xu
Corresponding Author:  Pan Lei 

Key words:  BLDCM, phase back-EMF observer, position-sensorless control, Whole Speed Range, , ,
Vol. 6 , (13): 2474-2482
Submitted Accepted Published
December 23, 2012 February 01, 2013 August 05, 2013
Abstract:

The main purpose of this study is to propose a novel back-EMF observer. It can drive a permanent magnet Brushless DC Motor (BLDCM) smoothly from slow to high speed without position or speed sensors. In the method, a phase back-EMF observer, which could estimate phase back-EMFs in real time and only relies on DC voltage and phase currents of motor without an additional circuit or complicated operation process,had been established with phase back-EMF as a disturbance signal. This observer simplifies the structure of traditional back-EMF observers and only has one inertia element, hence the response time and robustness of the system could be improved. This study also detailedly provides a method for speed and position detection, which has high performance in low speed range. The validity of the proposed method is verified through simulation and experimental results.
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  Cite this Reference:
Pan Lei, Wang Bei-Bei and Sun He-Xu, 2013. A Novel Control Method for BLDCM Based on Phase Back-EMF Observation.  Research Journal of Applied Sciences, Engineering and Technology, 6(13): 2474-2482.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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