Torque Capacity Improvement of Flux-Switching PM Machines Based on Directional Stator Permeance Design

Chen, Hong; Li, Dawei; Qu, Ronghai; Zou, Tianjie

Abstract

As one type of flux modulation machines, flux-switching permanent magnet (FSPM) machines present high sensitivity to airgap structures. Therefore, both stator/rotor teeth and slot/pole combinations have significant influences on machine performance. However, the relationships between the optimal stator structure and maximum torque capability of the FSPM machine are barely investigated. Therefore, this paper is devoted to proposing a directional stator permeance design approach to achieve the maximum torque of the FSPM machines under a given rotor, and reveal the corresponding stator structure. First, the relations between torque and air-gap permeance are presented based on a constructed torque contribution equation, where amplitudes and phase angles of the stator permeance harmonics are determined. Then, main permeance harmonics are directionally optimized to enlarge positive torque, while negative contributions are inversed to be positive. Especially, two FSPMs with 6-slot/19-pole and 6-slot/13-pole are chosen as design examples, and their optimal design processes and torque performances have been deeply analyzed, which verifies the effectiveness of the proposed design approach.

Citation

Chen, H., Li, D., Qu, R., & Zou, T. (2023). Torque Capacity Improvement of Flux-Switching PM Machines Based on Directional Stator Permeance Design. IEEE Transactions on Industrial Electronics, 71(5), 4551-4561. https://doi.org/10.1109/tie.2023.3281712

• Journal Article Type: Article
• Acceptance Date: Jun 5, 2023
• Online Publication Date: Jun 5, 2023
• Publication Date: 2023-05
• Deposit Date: Sep 6, 2023
• Publicly Available Date: Sep 7, 2023
• Journal: IEEE Transactions on Industrial Electronics
• Electronic ISSN: 1557-9948
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 71
• Issue: 5
• Pages: 4551-4561
• DOI: https://doi.org/10.1109/tie.2023.3281712
• Keywords: Stator windings , Torque , Harmonic analysis , Rotors , Windings , Topology , Permanent magnets, Flux-switching permanent magnet (FSPM) machine , permeance harmonic design , stator structure , torque capacity
• Public URL: https://nottingham-repository.worktribe.com/output/22173588
• Publisher URL: https://ieeexplore.ieee.org/document/10144597