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Design considerations for high-frequency coaxial winding power transformers
Abstract
The use of coaxial windings to create low-loss, low-leakage-reactance, power transformers for use in high-frequency soft-switched DC/DC and resonant converters has been demonstrated by M.H. Kheraluwalest al. (1990). Some of the important loss aspects of the design of coaxial winding transformers are examined, including the influence of the skin effect on winding resistance, the variation of core loss caused by nonuniform core flux density, and the choice of the principle dimensions and aspect ratios for maximum efficiency. Experimental measurements on a 50 kVA, 50 kHz unit are included to confirm portions of the analytical results and suggested design procedures.>
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“Accordingly, Litz wire is chosen to reduce the impact of skin effect by subdividing the conductor to smaller conductor strands with proper shields [91].”
From State of the Art of Solid-State Transformers: Advanced Topologies, Implementation Issues, Recent Progress and Improvements (2020) · cites this paper as [91]
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Hannan, M. A., Ker, P. J., Lipu, M. S. H., Choi, Z. H., Rahman, M. S. A., Muttaqi, K. M., & Blaabjerg, F. (2020) · IEEE Access · doi:10.1109/access.2020.2967345 · Cited by 339
An actively cooled high power, high frequency transformer with high insulation capability
Heinemann, L. (2003) · APEC. Seventeenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.02CH37335) · doi:10.1109/apec.2002.989270 · Cited by 135
Baek, S., & Bhattacharya, S. (2018) · IEEE Transactions on Industrial Electronics · doi:10.1109/tie.2017.2740855 · Cited by 26
Metadata
- Authors
- Rauls, M. S., Novotny, D. W., & Divan, D. M.
- Affiliations
- University of Wisconsin–Madison (US)
- ORCID
- Novotny, D.W.
- Venue
- IEEE Transactions on Industry Applications
- Published
- 1993
- Volume
- 29
- Issue
- 2
- Pages
- 375-381
- ISSN
- 0093-9994 (ISSN-L)
- OpenAlex
- W2126166291
- Cited by
- 56
- References
- 0
- Citations by year
- 2026: 1 · 2025: 2 · 2024: 5 · 2023: 1 · 2022: 1 · 2020: 2 · 2019: 4 · 2018: 4 · 2017: 2 · 2016: 2 · 2015: 2 · 2014: 1 · 2012: 3
- FWCI
- 1.48
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- IEEE Transactions on Industry Applications (publishedVersion)
- Minds at UW (University of Wisconsin) (submittedVersion)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced DC-DC Converters
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Magnetic Properties and Applications
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Induction Heating and Inverter Technology
- Keywords
- power transformers, high-frequency transformer, DC-DC converter, resonant converter, skin effect, winding resistance, core loss, transformer efficiency, transformer design
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- CoChat. (2026). Citation check: Design considerations for high-frequency coaxial winding power transformers. https://app.cochat.ai/papers/10.1109/28.216547
- The paper
- Rauls, M. S., Novotny, D. W., & Divan, D. M. (1993). Design considerations for high-frequency coaxial winding power transformers. IEEE Transactions on Industry Applications. https://doi.org/10.1109/28.216547
