Torque Ripple Reduction in Sectored Multi Three-Phase Machines Based on PWM Carrier Phase Shift

Wang, Xuchen; Sala, Giacomo; Zhang, He; Gu, Chunyang; Buticchi, Giampaolo; Formentini, Andrea; Gerada, Chris; Wheeler, Patrick

Abstract

The interest in multiphase machines for high power and reliable drives has been growing, and many control algorithms have been proposed to improve their torque performance. This work presents a new approach to the modeling of a multi three-phase drive, aiming at the minimization of the torque ripple introduced by Pulse Width Modulation (PWM) voltage excitation, by the shift of carrier phase angles among different three-phase inverters. The underlying idea is to use standard three-phase converters feeding the individual segment and to apply a phase shift between the PWM carriers. For the torque ripple analyzed in this paper, only the interaction between the armature field, resulting from the PWM voltage excitation, and the fundamental component of the permanent magnet field is considered. The proposed carrier phase shift angles are obtained for a case study of sectored triple three-phase synchronous permanent magnet machine. Analytical, numerical and finite element analysis (FEA) results are presented to explain how the carrier shift angles affect the current and torque ripple. Finally, experimental results are presented to validate the model and the control algorithm.

Citation

Wang, X., Sala, G., Zhang, H., Gu, C., Buticchi, G., Formentini, A., Gerada, C., & Wheeler, P. (2020). Torque Ripple Reduction in Sectored Multi Three-Phase Machines Based on PWM Carrier Phase Shift. IEEE Transactions on Industrial Electronics, 67(6), 4315-4325. https://doi.org/10.1109/TIE.2019.2931239

• Journal Article Type: Article
• Acceptance Date: Jul 6, 2019
• Online Publication Date: Jul 31, 2019
• Publication Date: 2020-06
• Deposit Date: Jul 15, 2019
• Publicly Available Date: Jul 18, 2019
• Journal: IEEE Transactions on Industrial Electronics
• Print ISSN: 0278-0046
• Electronic ISSN: 1557-9948
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 67
• Issue: 6
• Pages: 4315-4325
• DOI: https://doi.org/10.1109/TIE.2019.2931239
• Keywords: Analytical models, Multiphase drives, Machine vector control, Permanent magnet machines, Pulse
• Public URL: https://nottingham-repository.worktribe.com/output/2308685
• Publisher URL: https://ieeexplore.ieee.org/document/8782838
• Additional Information: © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
• Contract Date: Jul 15, 2019