Sundeep, S., Hewitt, D.A., Griffo, A. orcid.org/0000-0001-5642-2921 et al. (4 more authors) (2022) Detection of partial discharge activity in thermally aged SiC inverter fed stator winding samples and impact of partial discharges on their lifetime. In: 11th International Conference on Power Electronics, Machines and Drives (PEMD 2022). PEMD 2022 - The 11th International Conference on Power Electronics, Machines and Drives, 21-23 Jun 2022, Newcastle, UK (hybrid conference). IET Digital Library , pp. 271-277. ISBN 9781839537189
Abstract
The rise in popularity of SiC devices in power electronic converters for machine drives has been driven by the potential to enhance power density and efficiency through higher DC link voltages and faster switching rates. These enhancements are not without drawbacks, however, as they result in high voltage stress on machine insulation and higher electromagnetic interference(EMI). Due to this, there is an enhanced potential for machine winding insulation to be exposed to stresses which exceed the partial discharge inception voltage (PDIV), leading to a significant lifetime reduction of winding insulation. In this work, the effect of SiC inverter operation on lifetime reduction is investigated. The stator samples are aged in an accelerated manner at 230°C while being driven by a SiC inverter. PD activity is detected using a custom manufactured high-temperature coaxial cable-based antenna, the selection of which is discussed in this paper, alongside the post-processing requirements of the signal required for reliable PD detection. Comparison is made between cases in which PD occurred, and cases in which it did not, allowing the impact of PD on the sample lifetime to be assessed.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 The Authors. This is an author-produced version of a paper subsequently published in PEMD 2022 proceedings. This version made available under the CC BY license (http://creativecommons.org/licenses/by/4.0). |
Keywords: | electric machines; partial discharges; insulation; accelerated aging; silicon carbide |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Funding Information: | Funder Grant number Engineering and Physical Sciences Research Council EP/S00081X/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 06 Jul 2022 08:40 |
Last Modified: | 30 Aug 2022 08:20 |
Status: | Published |
Publisher: | IET Digital Library |
Refereed: | Yes |
Identification Number: | 10.1049/icp.2022.1062 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:188513 |