Numerical investigations of convective phenomena of oil impingement on end-windings

Connor, Peter H.; La Rocca, Antonino; Xu, Zeyuan; Eastwick, Carol N.; Pickering, Stephen J.; Gerada, Chris

Abstract

A novel experimental rig for analysing intensive liquid cooling of highly power-dense electrical machine components has been developed. Coupled fluid flow and heat transfer have been modelled, using computational fluid dynamics (CFD), to inform the design of a purpose-built enclosure for optimising the design of submerged oil jet cooling approaches for electrical machine stators. The detailed modelling methodology presented in this work demonstrates the value in utilising CFD as a design tool for oil-cooled electrical machines. The predicted performance of the final test enclosure design is presented, as well as examples of the sensitivity studies which helped to develop the design. The sensitivity of jet flow on resulting heat transfer coefficients has been calculated, while ensuring parasitic pressure losses are minimised. The CFD modelling will be retrospectively validated using experimental measurements from the test enclosure.

Citation

Connor, P. H., La Rocca, A., Xu, Z., Eastwick, C. N., Pickering, S. J., & Gerada, C. (2018, April). Numerical investigations of convective phenomena of oil impingement on end-windings. Presented at 9th International Conference on Power Electronics, Machines and Drives (PEMD 2018), Liverpool

• Presentation Conference Type: Conference Paper (published)
• Conference Name: 9th International Conference on Power Electronics, Machines and Drives (PEMD 2018)
• Start Date: Apr 17, 2018
• End Date: Apr 19, 2018
• Acceptance Date: Jul 27, 2018
• Online Publication Date: Apr 16, 2019
• Publication Date: Jun 1, 2019
• Deposit Date: Jul 10, 2019
• Publicly Available Date: Jul 10, 2019
• Journal: The Journal of Engineering
• Print ISSN: 2051-3305
• Electronic ISSN: 2051-3305
• Publisher: Institution of Engineering and Technology (IET)
• Peer Reviewed: Peer Reviewed
• Volume: 2019
• Issue: 17
• Pages: 4022-4026
• DOI: https://doi.org/10.1049/joe.2018.8027
• Public URL: https://nottingham-repository.worktribe.com/output/2294012
• Publisher URL: https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8027
• Additional Information: Paper held at the 9th International Conference on Power Electronics, Machines and Drives (PEMD 2018)
• Contract Date: Jul 10, 2019