Fault-Tolerant Dual Channels Three-Phase PMSM for Aerospace Applications

Khowja, Muhammad Raza; Singh, Kuldeep; la Rocca, Antonino; Vakil, Gaurang; Ramnathan, Ramkumar; Gerada, Chris

Abstract

In safety-critical applications such as aerospace and marine, electrical machines are limited to meet several stringent requirements such as physical, electrical, magnetic and thermal isolation between two three-phase channels, in order to be considered for fault-tolerant operation throughout its service life. This paper presents novel sectored fault-tolerant PM synchronous machines which include single, double and four sectored designs where one pole pair section of the machine's stator is cut out to meet the fault-tolerant constraints. A detailed electromagnetic analysis is carried out in terms of their electromagnetic performance which is then compared with the benchmark 30s/10p combination for a given output power of 50kW. Due to the heightened power density in the innovative design, a highly effective thermal management system became necessary. This led to the identification of a novel and efficient cooling configuration. Leveraging the four gaps between the four sectors, an efficient cooling system was successfully implemented. As a result, the current density increased by 18.2%, representing an increase of 2A/mm² compared to the benchmark machine design.

Citation

Khowja, M. R., Singh, K., la Rocca, A., Vakil, G., Ramnathan, R., & Gerada, C. (2024). Fault-Tolerant Dual Channels Three-Phase PMSM for Aerospace Applications. IEEE Access, 12, 126845-126857. https://doi.org/10.1109/ACCESS.2024.3451705

• Journal Article Type: Article
• Acceptance Date: Aug 16, 2024
• Online Publication Date: Aug 29, 2024
• Publication Date: Aug 29, 2024
• Deposit Date: Sep 16, 2024
• Publicly Available Date: Sep 18, 2024
• Journal: IEEE Access
• Electronic ISSN: 2169-3536
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 12
• Pages: 126845-126857
• DOI: https://doi.org/10.1109/ACCESS.2024.3451705
• Public URL: https://nottingham-repository.worktribe.com/output/38913803
• Publisher URL: https://ieeexplore.ieee.org/document/10658968