Challenges and Future opportunities of Hairpin Technologies

Arzillo, A.; Braglia, P.; Nuzzo, S.; Barater, D.; Franceschini, G.; Gerada, D.; Gerada, C.

Abstract

Hairpin windings are seeing an ever-increasing application and development in electrical machines designed for high power and torque densities. In fact, due to their inherently high fill factor, they are very attractive in applications, such as transportation, where these characteristics are considered main design objectives. On the other hand, high operating frequencies also contribute to improve power density of electrical machines. However, at high fundamental frequencies, hairpin windings are characterised by increased Joule losses due to skin and proximity effects. Hence, while these technologies are introducing new opportunities, a number of challenges still need to be addressed. These include manufacturing aspects, contacting processes, thermal management, etc. This paper presents an overview of the current state-of-the-art of hairpin technologies and propose possible future opportunities. The authors' perspective is then finally provided, showing how innovative winding patterns can potentially overcome the above mentioned challenges.

Citation

Arzillo, A., Braglia, P., Nuzzo, S., Barater, D., Franceschini, G., Gerada, D., & Gerada, C. (2020). Challenges and Future opportunities of Hairpin Technologies. . https://doi.org/10.1109/ISIE45063.2020.9152417

• Conference Name: 2020 IEEE 29th International Symposium on Industrial Electronics (ISIE)
• Conference Location: Delft, Netherlands
• Start Date: Jun 17, 2020
• End Date: Jun 19, 2020
• Acceptance Date: Apr 15, 2020
• Online Publication Date: Jul 30, 2020
• Publication Date: 2020-06
• Deposit Date: Nov 2, 2020
• Publicly Available Date: Nov 20, 2020
• Publisher: Institute of Electrical and Electronics Engineers
• Pages: 277-282
• ISBN: 9781728156354
• DOI: https://doi.org/10.1109/ISIE45063.2020.9152417
• Public URL: https://nottingham-repository.worktribe.com/output/5013480
• Publisher URL: https://ieeexplore-ieee-org.ezproxy.nottingham.ac.uk/abstract/document/9152417
• Additional Information: © 2020 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.