A non‐isolated DC‐DC converter with low voltage stress and high step‐down voltage conversion ratio
Abstract This work focuses on a new non‐isolated interleaved DC‐DC converter with very high step‐down voltage conversion ratio. By employing the switched/series capacitor concept, along with the proper component interconnection, the converter features a high step‐down voltage conversion ratio where,...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-05-01
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| Series: | IET Power Electronics |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/pel2.12115 |
| _version_ | 1797989843148472320 |
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| author | Stylianos P. Syrigos Georgios C. Christidis Theodoros P. Mouselinos Emmanuel C. Tatakis |
| author_facet | Stylianos P. Syrigos Georgios C. Christidis Theodoros P. Mouselinos Emmanuel C. Tatakis |
| author_sort | Stylianos P. Syrigos |
| collection | DOAJ |
| description | Abstract This work focuses on a new non‐isolated interleaved DC‐DC converter with very high step‐down voltage conversion ratio. By employing the switched/series capacitor concept, along with the proper component interconnection, the converter features a high step‐down voltage conversion ratio where, in the private case of equal duty ratios, it is six times higher than the conventional buck converter. This high step‐down voltage conversion ratio is achieved with the lowest number of components compared to other similar topologies of the same conversion ratio. Also, due to the blocking/series capacitors, the voltage stress on the switches is reduced, improving the converter efficiency. One of the key features of the proposed converter is the inherent automatic current sharing between the interleaved phases, which in the case of equal duty ratios, is uniformly distributed. To add on, due to the use of only two interleaved phases, the converter has a wide output voltage range, since the duty cycle can be extended to 0.5. To validate the proposed converter operation, a 250 W wide‐input/wide‐output experimental prototype was built, achieving a peak efficiency of 94%. |
| first_indexed | 2024-04-11T08:25:57Z |
| format | Article |
| id | doaj.art-97ccd71aed0f4d938a39f57596d144f1 |
| institution | Directory Open Access Journal |
| issn | 1755-4535 1755-4543 |
| language | English |
| last_indexed | 2024-04-11T08:25:57Z |
| publishDate | 2021-05-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Power Electronics |
| spelling | doaj.art-97ccd71aed0f4d938a39f57596d144f12022-12-22T04:34:44ZengWileyIET Power Electronics1755-45351755-45432021-05-011461219123510.1049/pel2.12115A non‐isolated DC‐DC converter with low voltage stress and high step‐down voltage conversion ratioStylianos P. Syrigos0Georgios C. Christidis1Theodoros P. Mouselinos2Emmanuel C. Tatakis3Department of Electrical and Computer Engineering University of Patras Rion‐Patras GreeceDepartment of Electrical and Computer Engineering University of Patras Rion‐Patras GreeceDepartment of Electrical and Computer Engineering University of Patras Rion‐Patras GreeceDepartment of Electrical and Computer Engineering University of Patras Rion‐Patras GreeceAbstract This work focuses on a new non‐isolated interleaved DC‐DC converter with very high step‐down voltage conversion ratio. By employing the switched/series capacitor concept, along with the proper component interconnection, the converter features a high step‐down voltage conversion ratio where, in the private case of equal duty ratios, it is six times higher than the conventional buck converter. This high step‐down voltage conversion ratio is achieved with the lowest number of components compared to other similar topologies of the same conversion ratio. Also, due to the blocking/series capacitors, the voltage stress on the switches is reduced, improving the converter efficiency. One of the key features of the proposed converter is the inherent automatic current sharing between the interleaved phases, which in the case of equal duty ratios, is uniformly distributed. To add on, due to the use of only two interleaved phases, the converter has a wide output voltage range, since the duty cycle can be extended to 0.5. To validate the proposed converter operation, a 250 W wide‐input/wide‐output experimental prototype was built, achieving a peak efficiency of 94%.https://doi.org/10.1049/pel2.12115Power electronics, supply and supervisory circuitsDC‐DC power convertors |
| spellingShingle | Stylianos P. Syrigos Georgios C. Christidis Theodoros P. Mouselinos Emmanuel C. Tatakis A non‐isolated DC‐DC converter with low voltage stress and high step‐down voltage conversion ratio IET Power Electronics Power electronics, supply and supervisory circuits DC‐DC power convertors |
| title | A non‐isolated DC‐DC converter with low voltage stress and high step‐down voltage conversion ratio |
| title_full | A non‐isolated DC‐DC converter with low voltage stress and high step‐down voltage conversion ratio |
| title_fullStr | A non‐isolated DC‐DC converter with low voltage stress and high step‐down voltage conversion ratio |
| title_full_unstemmed | A non‐isolated DC‐DC converter with low voltage stress and high step‐down voltage conversion ratio |
| title_short | A non‐isolated DC‐DC converter with low voltage stress and high step‐down voltage conversion ratio |
| title_sort | non isolated dc dc converter with low voltage stress and high step down voltage conversion ratio |
| topic | Power electronics, supply and supervisory circuits DC‐DC power convertors |
| url | https://doi.org/10.1049/pel2.12115 |
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