Torque quality improvement of an open-end winding PMSM

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

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