Commutation Torque Ripple Suppression Strategy of Brushless DC Motor Considering Back Electromotive Force Variation

Xinmin Li, Guokai Jiang, Wei Chen, Tingna Shi, Guozheng Zhang and Qiang Geng
Additional contact information
Xinmin Li: School of Electrical Engineering and Automation, Tianjin Polytechnic University, Tianjin 300387, China
Guokai Jiang: China Automotive Technology and Research Center Co. Ltd., Tianjin 300300, China
Wei Chen: School of Artificial Intelligence, Tianjin Polytechnic University, Tianjin 300387, China
Tingna Shi: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Guozheng Zhang: School of Electrical Engineering and Automation, Tianjin Polytechnic University, Tianjin 300387, China
Qiang Geng: School of Electrical Engineering and Automation, Tianjin Polytechnic University, Tianjin 300387, China

Energies, 2019, vol. 12, issue 10, 1-14

Abstract: This paper presents a commutation torque ripple suppression strategy for brushless DC motor (BLDCM) in the high-speed region, which considers the back electromotive force (back-EMF) variation during the commutation process. In the paper, the influence of actual back-EMF variation on the torque and outgoing phase current during the commutation process is analyzed. A modified smooth torque mechanism is then reconstructed considering the back-EMF variation, based on which a novel torque ripple suppression strategy is further designed. Compared with the traditional strategy which controls the chopping duty cycle relatively smoothly in the commutation process, the proposed strategy dynamically regulates the chopping duty cycle, which makes it show a gradual decrease. This strategy can suppress the commutation torque ripple even in a long commutation process, and broaden the speed range of the commutation torque ripple reduction. Under the experimental conditions of this paper, the proposed strategy can effectively reduce the commutation torque ripple in the high-speed region, and avoid the outgoing phase current cannot be reduced to zero. The experimental results verify the correctness of the theoretical analysis and the feasibility of the proposed strategy.

Keywords: brushless DC motor; commutation torque ripple; back electromotive force (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
https://www.mdpi.com/1996-1073/12/10/1932/pdf (application/pdf)
https://www.mdpi.com/1996-1073/12/10/1932/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:12:y:2019:i:10:p:1932-:d:232844

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().