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Abstract
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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
Submitted: December 23, 2012
Accepted: February 01, 2013
Published: August 05, 2013 |
Abstract:
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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.
Key words: BLDCM, phase back-EMF observer, position-sensorless control, Whole Speed Range, , ,
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Cite this Reference:
Pan Lei, Wang Bei-Bei and Sun He-Xu, . A Novel Control Method for BLDCM Based on Phase Back-EMF Observation. Research Journal of Applied Sciences, Engineering and Technology, (13): 2474-2482.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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