Design of a stator for a high-speed turbo-generator with fixed permanent magnet rotor radius and volt-ampere constraints

Fernando, Nuwantha; Arumugam, Puvaneswaran; Gerada, C.

Abstract

This paper investigates high-speed surface PM machine design for portable turbo-generator applications. The rotor radius is fixed to achieve certain optimal characteristics of the magnet retention mechanism. The basis of this paper is to design and select the stator. The stator designs are populated by different slot/pole combinations, winding arrangements and over a range of possible stack lengths. However, the design is constrained by physical diameter, stack length and electrical volt-ampere constraints. A large number of preliminary machine designs do not satisfy the specified turbo-generator torque/speed requirements under the given volt-ampere constraints and therefore it is ineffective to perform Finite Element analysis on all preliminary design variations. In order to establish the feasibility of a machine design to fulfill the specified turbo-generator torque/speed requirements, the concept of inductance-limits is presented and then linked with stator design parameters. By application of this analysis strategy, a confined optimal set of stator designs are obtained and are subjected to detailed finite element simulations. A final machine design is selected and fabricated. Experimental results are presented for the validation of the final machine design.

Citation

Fernando, N., Arumugam, P., & Gerada, C. (2018). Design of a stator for a high-speed turbo-generator with fixed permanent magnet rotor radius and volt-ampere constraints. IEEE Transactions on Energy Conversion, 33(3), 1311-1320. https://doi.org/10.1109/TEC.2018.2804955

• Journal Article Type: Article
• Acceptance Date: Jan 9, 2018
• Online Publication Date: Feb 12, 2018
• Publication Date: 2018-09
• Deposit Date: Jun 6, 2018
• Publicly Available Date: Jun 6, 2018
• Journal: IEEE Transactions on Energy Conversion
• Print ISSN: 0885-8969
• Electronic ISSN: 1558-0059
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 33
• Issue: 3
• Pages: 1311-1320
• DOI: https://doi.org/10.1109/TEC.2018.2804955
• Keywords: Permanent magnet machine; Field-weakening; High-speed machines; Leakage inductance model
• Public URL: https://nottingham-repository.worktribe.com/output/911209
• Publisher URL: https://ieeexplore.ieee.org/document/8289362/
• Additional Information: © 2018 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: Jun 6, 2018