A Novel Concept of Ribless Synchronous Reluctance Motor for Enhanced Torque Capability

Bao, Yuli; Degano, Michele; Wang, Shuo; Chuan, Liu; Xu, Zhuang; Zhang, He; Gerada, Chris

Abstract

The rotor structure of synchronous reluctance machines (SynRel) is conventionally retained mechanically by iron ribs. In this paper a novel structure for high speed synchronous reluctance rotor is presented. The novelty of this work is the proof of a concept of SynRel machine without iron ribs. Structurally, the rotor iron lamination segments are embedded in an adhesive resin material with high temperature resistance and mechanical strength. Three four-pole SynRel machines have been designed with the target of improving motor torque, and compared for different ribs configuration. It has been shown that the proposed motor performs enhanced torque, power factor and efficiency with respect to conventional SynRel with iron ribs. An extensive sensitivity analysis of the ribless rotor geometry is carried out, followed by both mechanical analysis and experimental over speed test to guarantee its robustness above the operating speed range. The manufacturing procedure of this novel rotor is introduced. Finally, the experimental results on both SynRel prototypes are presented, showing the increase in torque, power factor and efficiency of the proposed solution. This work is a first step towards the definition of a viable and novel solution of SynRel machines with improved performance.

Citation

Bao, Y., Degano, M., Wang, S., Chuan, L., Xu, Z., Zhang, H., & Gerada, C. (2020). A Novel Concept of Ribless Synchronous Reluctance Motor for Enhanced Torque Capability. IEEE Transactions on Industrial Electronics, 67(4), 2553-2563. https://doi.org/10.1109/tie.2019.2914616

• Journal Article Type: Article
• Acceptance Date: Apr 12, 2019
• Online Publication Date: May 8, 2019
• Publication Date: 2020-04
• Deposit Date: Apr 17, 2019
• Publicly Available Date: Apr 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: 4
• Pages: 2553-2563
• DOI: https://doi.org/10.1109/tie.2019.2914616
• Keywords: Torque enhancement, Sensitivity analysis, Ribless rotor design, Synchronous reluctance machines
• Public URL: https://nottingham-repository.worktribe.com/output/1823077
• Publisher URL: https://ieeexplore.ieee.org/document/8710000
• 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: Apr 18, 2019