An optimization approach for high-efficiency high-power-density boost converters
Boost converters running in valley switching mode have the advantages of low switching loss and small inductor size. However, the switching frequency is not fixed as operating conditions vary, which can make inductor design for this converter challenging. In this paper, a systematic optimization app...
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| Format: | Article |
| Language: | English |
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Institute of Electrical and Electronics Engineers (IEEE)
2020
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| Online Access: | https://hdl.handle.net/1721.1/123498 |
| _version_ | 1826216406212935680 |
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| author | Zhang, Cheng Perreault, David J |
| author2 | Massachusetts Institute of Technology. Research Laboratory of Electronics |
| author_facet | Massachusetts Institute of Technology. Research Laboratory of Electronics Zhang, Cheng Perreault, David J |
| author_sort | Zhang, Cheng |
| collection | MIT |
| description | Boost converters running in valley switching mode have the advantages of low switching loss and small inductor size. However, the switching frequency is not fixed as operating conditions vary, which can make inductor design for this converter challenging. In this paper, a systematic optimization approach is presented that is suitable for wide-input-voltage range designs such as power factor correction (PFC) converters. The loss of each component is modeled as a function of the operating point, and the efficiency is estimated over the entire input voltage range. Given a set of selected cores and Litz wire, an optimal inductor design can be found on a plot of efficiencies and air-gap lengths. Genetic algorithms can be used to find the optimal design with customizable cores. Experiments are conducted to verify the model and the approach. One of the prototypes, designed as the first stage for an ac-dc converter system, achieves around 98% efficiency over the input range of 70V to 170V, boosting to 363V at 45W. The prototype converter has a total volume of 2.8cm³ and reaches a power density of 263W/in³ . |
| first_indexed | 2024-09-23T16:46:49Z |
| format | Article |
| id | mit-1721.1/123498 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T16:46:49Z |
| publishDate | 2020 |
| publisher | Institute of Electrical and Electronics Engineers (IEEE) |
| record_format | dspace |
| spelling | mit-1721.1/1234982022-10-03T08:16:14Z An optimization approach for high-efficiency high-power-density boost converters Zhang, Cheng Perreault, David J Massachusetts Institute of Technology. Research Laboratory of Electronics Boost converters running in valley switching mode have the advantages of low switching loss and small inductor size. However, the switching frequency is not fixed as operating conditions vary, which can make inductor design for this converter challenging. In this paper, a systematic optimization approach is presented that is suitable for wide-input-voltage range designs such as power factor correction (PFC) converters. The loss of each component is modeled as a function of the operating point, and the efficiency is estimated over the entire input voltage range. Given a set of selected cores and Litz wire, an optimal inductor design can be found on a plot of efficiencies and air-gap lengths. Genetic algorithms can be used to find the optimal design with customizable cores. Experiments are conducted to verify the model and the approach. One of the prototypes, designed as the first stage for an ac-dc converter system, achieves around 98% efficiency over the input range of 70V to 170V, boosting to 363V at 45W. The prototype converter has a total volume of 2.8cm³ and reaches a power density of 263W/in³ . 2020-01-21T19:49:31Z 2020-01-21T19:49:31Z 2018-09 2018-06 2020-01-15T19:10:20Z Article http://purl.org/eprint/type/ConferencePaper 9781538655412 https://hdl.handle.net/1721.1/123498 Zhang, Cheng and David J. Perreault. "An optimization for high-efficiency high-power-density boost converters." 2018 IEEE 19th Workshop on Control and Modeling for Power Electronics (COMPEL), June 2018, Padua Italy, Institute of Electrical and Electronics Engineers (IEEE), September 2018 © 2018 IEEE en http://dx.doi.org/10.1109/compel.2018.8460066 2018 IEEE 19th Workshop on Control and Modeling for Power Electronics (COMPEL) 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 | Zhang, Cheng Perreault, David J An optimization approach for high-efficiency high-power-density boost converters |
| title | An optimization approach for high-efficiency high-power-density boost converters |
| title_full | An optimization approach for high-efficiency high-power-density boost converters |
| title_fullStr | An optimization approach for high-efficiency high-power-density boost converters |
| title_full_unstemmed | An optimization approach for high-efficiency high-power-density boost converters |
| title_short | An optimization approach for high-efficiency high-power-density boost converters |
| title_sort | optimization approach for high efficiency high power density boost converters |
| url | https://hdl.handle.net/1721.1/123498 |
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