Research Article | OPEN ACCESS
A Novel Control Method for BLDCM Based on Phase Back-EMF Observation
1, 2Pan Lei, 2Wang Bei-Bei and 1Sun He-Xu
1Control Science and Engineering School, Hebei University of Technology, Tianjin, China
2Department of Electronic and Information Engineering, Tianjin Institute of Urban Construction, Tianjin, China
Research Journal of Applied Sciences, Engineering and Technology 2013 13:2474-2482
Received: December 23, 2012 | Accepted: February 01, 2013 | Published: 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.
Keywords:
BLDCM, phase back-EMF observer, position-sensorless control, whole speed range,
Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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