A Low-Loss Inductor Structure and Design Guidelines for High-Frequency Applications
Operation in the high-frequency (HF) regime (3-30 MHz) has potential for miniaturizing power electronics, but designing small efficient inductors at HF can be challenging. At these frequencies, losses due to skin and proximity effects are difficult to reduce, and gaps needed to keep B fields low in...
| Main Authors: | , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Published: |
Institute of Electrical and Electronics Engineers (IEEE)
2021
|
| Online Access: | https://hdl.handle.net/1721.1/130102 |
| _version_ | 1811076003019096064 |
|---|---|
| author | Yang, Rachel S.(Rachel Shanting) Hanson, Alex Jordan Reese, Bradley A. Sullivan, Charles R. Perreault, David J. |
| author2 | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science |
| author_facet | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Yang, Rachel S.(Rachel Shanting) Hanson, Alex Jordan Reese, Bradley A. Sullivan, Charles R. Perreault, David J. |
| author_sort | Yang, Rachel S.(Rachel Shanting) |
| collection | MIT |
| description | Operation in the high-frequency (HF) regime (3-30 MHz) has potential for miniaturizing power electronics, but designing small efficient inductors at HF can be challenging. At these frequencies, losses due to skin and proximity effects are difficult to reduce, and gaps needed to keep B fields low in the core add fringing field loss. We propose a low-loss inductor structure with step-by-step design guidelines for HF applications. The structure achieves low loss through double-sided conduction in its single-layer winding and through quasi-distributed gaps. An example ~15 μH inductor designed using the proposed design guidelines achieved an experimental quality factor of 720 at 3 MHz and 2A (peak) of ac current. The inductor also improved a high-current-swing power converter operated at 1-3 MHz; at 250 W, the inductor reduced converter losses by 19%, compared to a conventional inductor design. In some cases, litz wire may further improve the performance of the proposed structure. With litz wire, the example inductor had an improved quality factor of 980. Thus, the proposed inductor geometry and design guidelines are suitable for small highly efficient inductors at HF and can thereby help realize high-frequency miniaturization of power electronics. (This paper is accompanied by an example Python script for generating preliminary designs, available in the online supplementary material). |
| first_indexed | 2024-09-23T10:14:36Z |
| format | Article |
| id | mit-1721.1/130102 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T10:14:36Z |
| publishDate | 2021 |
| publisher | Institute of Electrical and Electronics Engineers (IEEE) |
| record_format | dspace |
| spelling | mit-1721.1/1301022022-09-30T19:52:41Z A Low-Loss Inductor Structure and Design Guidelines for High-Frequency Applications Yang, Rachel S.(Rachel Shanting) Hanson, Alex Jordan Reese, Bradley A. Sullivan, Charles R. Perreault, David J. Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Research Laboratory of Electronics Operation in the high-frequency (HF) regime (3-30 MHz) has potential for miniaturizing power electronics, but designing small efficient inductors at HF can be challenging. At these frequencies, losses due to skin and proximity effects are difficult to reduce, and gaps needed to keep B fields low in the core add fringing field loss. We propose a low-loss inductor structure with step-by-step design guidelines for HF applications. The structure achieves low loss through double-sided conduction in its single-layer winding and through quasi-distributed gaps. An example ~15 μH inductor designed using the proposed design guidelines achieved an experimental quality factor of 720 at 3 MHz and 2A (peak) of ac current. The inductor also improved a high-current-swing power converter operated at 1-3 MHz; at 250 W, the inductor reduced converter losses by 19%, compared to a conventional inductor design. In some cases, litz wire may further improve the performance of the proposed structure. With litz wire, the example inductor had an improved quality factor of 980. Thus, the proposed inductor geometry and design guidelines are suitable for small highly efficient inductors at HF and can thereby help realize high-frequency miniaturization of power electronics. (This paper is accompanied by an example Python script for generating preliminary designs, available in the online supplementary material). National Science Foundation (Grants 1609240 and 1610719) 2021-03-08T20:55:22Z 2021-03-08T20:55:22Z 2019-10 Article http://purl.org/eprint/type/JournalArticle 0885-8993 1941-0107 https://hdl.handle.net/1721.1/130102 Yang, Rachel S. et al. "A Low-Loss Inductor Structure and Design Guidelines for High-Frequency Applications." IEEE Transactions on Power Electronics 34, 10 (October 2019): 9993 - 10005 © 2019 IEEE http://dx.doi.org/10.1109/tpel.2019.2892397 IEEE Transactions on Power Electronics Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Institute of Electrical and Electronics Engineers (IEEE) Prof. Perreault via Phoebe Ayers |
| spellingShingle | Yang, Rachel S.(Rachel Shanting) Hanson, Alex Jordan Reese, Bradley A. Sullivan, Charles R. Perreault, David J. A Low-Loss Inductor Structure and Design Guidelines for High-Frequency Applications |
| title | A Low-Loss Inductor Structure and Design Guidelines for High-Frequency Applications |
| title_full | A Low-Loss Inductor Structure and Design Guidelines for High-Frequency Applications |
| title_fullStr | A Low-Loss Inductor Structure and Design Guidelines for High-Frequency Applications |
| title_full_unstemmed | A Low-Loss Inductor Structure and Design Guidelines for High-Frequency Applications |
| title_short | A Low-Loss Inductor Structure and Design Guidelines for High-Frequency Applications |
| title_sort | low loss inductor structure and design guidelines for high frequency applications |
| url | https://hdl.handle.net/1721.1/130102 |
| work_keys_str_mv | AT yangrachelsrachelshanting alowlossinductorstructureanddesignguidelinesforhighfrequencyapplications AT hansonalexjordan alowlossinductorstructureanddesignguidelinesforhighfrequencyapplications AT reesebradleya alowlossinductorstructureanddesignguidelinesforhighfrequencyapplications AT sullivancharlesr alowlossinductorstructureanddesignguidelinesforhighfrequencyapplications AT perreaultdavidj alowlossinductorstructureanddesignguidelinesforhighfrequencyapplications AT yangrachelsrachelshanting lowlossinductorstructureanddesignguidelinesforhighfrequencyapplications AT hansonalexjordan lowlossinductorstructureanddesignguidelinesforhighfrequencyapplications AT reesebradleya lowlossinductorstructureanddesignguidelinesforhighfrequencyapplications AT sullivancharlesr lowlossinductorstructureanddesignguidelinesforhighfrequencyapplications AT perreaultdavidj lowlossinductorstructureanddesignguidelinesforhighfrequencyapplications |