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Torque quality improvement of an open-end winding PMSM

Hunter, Nick; Cox, Tom; Zanchetta, Pericle; Odhano, Shafiq Ahmed; Rovere, Luca

Authors

NICK HUNTER Nick.Hunter@nottingham.ac.uk
Foundation Year Teaching Associate

Shafiq Ahmed Odhano

Luca Rovere



Abstract

This paper proposes a new closed-loop control strategy which improves the quality of the torque output of an open-end winding (OEW) permanent magnet synchronous motor (PMSM) with common DC bus. Such a configuration provides a path for the zero sequence currents (ZSC) to flow in the windings. The analysis of the system revealed that these currents result in electromagnetic torque oscillation. It has also been established that the zero sequence currents are caused mainly by the third harmonic component of the back electromotive force (EMF). The research and a thorough analysis of the OEW PMSM showed that the existing methods of minimising the torque ripple cannot be applied when the leakage inductance of a machine is small, because the zero sequence component can no longer be considered as one additional degree of freedom that can be managed. Therefore, a new control strategy presented in this paper was proposed. The strategy is validated in simulation.

Citation

Hunter, N., Cox, T., Zanchetta, P., Odhano, S. A., & Rovere, L. (2018). Torque quality improvement of an open-end winding PMSM. In 2018 IEEE Energy Conversion Congress and Exposition (ECCE)doi:10.1109/ecce.2018.8558051

Conference Name 2018 IEEE Energy Conversion Congress and Exposition (ECCE)
Start Date Sep 23, 2018
End Date Sep 27, 2018
Acceptance Date Apr 12, 2018
Online Publication Date Dec 6, 2018
Publication Date Sep 23, 2018
Deposit Date Feb 18, 2019
Publicly Available Date Feb 19, 2019
Publisher Institute of Electrical and Electronics Engineers
Book Title 2018 IEEE Energy Conversion Congress and Exposition (ECCE)
ISBN 9781479973125
DOI https://doi.org/10.1109/ecce.2018.8558051
Public URL https://nottingham-repository.worktribe.com/output/1563624
Publisher URL https://ieeexplore.ieee.org/document/8558051

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