Research on the Torque Ripple of Brushless DC Motor under Non-ideal EMF

Authors

Kun Xia, Department of Electrical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;
Bin Dong, Department of Electrical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;
Lu Jing, Department of Electrical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;

Abstract

Abstract: Non-ideal back-EMF waveform of brushless DC motor is unavoidable due to manufactory technology limitation, which contributes to the torque ripple and requires high performance controller to suppress the influence. Several back-EMF waveforms are analyzed and mathematical model of non-ideal back-EMF is proposed. The torque ripple under the non-ideal waveform is calculated and the relationship between torque ripple and the shape of back-EMF waveform is achieved by this model. The change of torque ripple under non-ideal back-EMF is simulated with driving current of square wave and sinusoidal wave. The results show the effectiveness of the back-EMF model for calculating the torque ripple and prove the reliability of the torque ripple relationship.

Recommended Citation

Xia, Kun; Dong, Bin; and Jing, Lu (2019) "Research on the Torque Ripple of Brushless DC Motor under Non-ideal EMF," Journal of System Simulation: Vol. 30: Iss. 1, Article 25.
DOI: 10.16182/j.issn1004731x.joss.201801025
Available at: https://dc-china-simulation.researchcommons.org/journal/vol30/iss1/25

First Page

197

DOI Link

https://doi.org/10.16182/j.issn1004731x.joss.201801025

Last Page

204

CLC

TP391.9

Recommended Citation

Xia Kun, Dong Bin, Lu Jing. Research on the Torque Ripple of Brushless DC Motor under Non-ideal EMF[J]. Journal of System Simulation, 2018, 30(1): 197-204.

DOI

10.16182/j.issn1004731x.joss.201801025