| Presentation | 2022-01-27 Analysis and Improvement Techniques for Power Consumption of Dual-Active-Bridge DC-DC Converter at Light-Load Condition Masahiro Tajiri, Yuichi Ishihama, Toshiro Hirose, Yoichi Ishizuka, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper presents an analysis of isolated Dual-Active-Bridge (DAB) DC-DC converters in which the input-output voltage ratio does not match the transformer turns ratio and the power efficiency deteriorates under light load conditions. Especially, when DAB is used as a battery application, the above problem becomes a major issue because the input-output voltage ratio tends to change due to battery voltage fluctuation and the light-load condition is relatively long. The proposed control method can significantly reduce the copper loss when the input-output voltage ratio and the transformer turns ratio are not the same, especially at light loads. In addition, the proposed control method has the advantage that only one variable needs to be controlled in effect. Through practical verification, we have confirmed that the proposed control method can improve the power efficiency at light loads by up to 20%. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | DAB DC-DC Converter / Power Efficiency / Trapezoidal Current Control / Triangular Current Control |
| Paper # | EE2021-33 |
| Date of Issue | 2022-01-20 (EE) |
| Conference Information | |
| Committee | EE |
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| Conference Date | 2022/1/27(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Tadashi Suetsugu(Fukuoka Univ.) |
| Vice Chair | Hiroo Sekiya(Chiba Univ.) / Keiichi Hirose(NTT Facilities) |
| Secretary | Hiroo Sekiya(Sojo Univ.) / Keiichi Hirose(Nagasaki Inst. of Applied Science) |
| Assistant | Yuu Yonezawa(Nagoya Univ.) / Yudai Furukawa(Fukuoka Univ.) / Kazufumi Yuasa(NTT Facilities) |
| Paper Information | |
| Registration To | Technical Committee on Energy Engineering in Electronics and Communications |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Analysis and Improvement Techniques for Power Consumption of Dual-Active-Bridge DC-DC Converter at Light-Load Condition |
| Sub Title (in English) | |
| Keyword(1) | DAB DC-DC Converter |
| Keyword(2) | Power Efficiency |
| Keyword(3) | Trapezoidal Current Control |
| Keyword(4) | Triangular Current Control |
| 1st Author's Name | Masahiro Tajiri |
| 1st Author's Affiliation | Nagasaki University(Nagasaki Univ) |
| 2nd Author's Name | Yuichi Ishihama |
| 2nd Author's Affiliation | Microchip Japan(Microchip) |
| 3rd Author's Name | Toshiro Hirose |
| 3rd Author's Affiliation | Nishimu Electronics Industries Co.Ltd(Nishimu) |
| 4th Author's Name | Yoichi Ishizuka |
| 4th Author's Affiliation | Nagasaki University(Nagasaki Univ) |
| Date | 2022-01-27 |
| Paper # | EE2021-33 |
| Volume (vol) | vol.121 |
| Number (no) | EE-359 |
| Page | pp.pp.12-17(EE), |
| #Pages | 6 |
| Date of Issue | 2022-01-20 (EE) |