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On Stability of Open-Loop Operation without Rotor Information for Brushless DC Motors
Joint Authors
Lyu, Haotun
Wu, Zhong
Shi, Yongli
Shi, Di
Source
Mathematical Problems in Engineering
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-06-30
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Open-loop operation mode is often used to control the Brushless DC Motors (BLDCMs) without rotor position sensors when the back electromotive force (EMF) is too weak due to the very low rotor velocity.
The rotor position information is not necessary in this mode and the stator windings are supplied with voltages under a certain ratio of the amplitude to the frequency.
However, the rotor synchronization will be destroyed once if the commutation instant is inappropriate.
In order to improve the reliability of the open-loop operation mode, a dynamic equation is established to represent the synchronization error between the rotor and the stator.
Thereafter, the stability of the open-loop control mode is analyzed by using Lyapunov indirect method.
Theoretical analysis indicates that the open-loop control mode is asymptotically stable only when the commutation instant of the stator current lags behind the ideal one suitably.
Finally, theoretical analysis is verified through the experimental results of a certain BLDCM.
American Psychological Association (APA)
Wu, Zhong& Lyu, Haotun& Shi, Yongli& Shi, Di. 2014. On Stability of Open-Loop Operation without Rotor Information for Brushless DC Motors. Mathematical Problems in Engineering،Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-494937
Modern Language Association (MLA)
Wu, Zhong…[et al.]. On Stability of Open-Loop Operation without Rotor Information for Brushless DC Motors. Mathematical Problems in Engineering No. 2014 (2014), pp.1-7.
https://search.emarefa.net/detail/BIM-494937
American Medical Association (AMA)
Wu, Zhong& Lyu, Haotun& Shi, Yongli& Shi, Di. On Stability of Open-Loop Operation without Rotor Information for Brushless DC Motors. Mathematical Problems in Engineering. 2014. Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-494937
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-494937