Tapped-inductor bi-directional Cuk converter with high step-up/down conversion ratio and its optimum design
Abstract A bidirectional DC–DC converter is required for an energy storage system. High efficiency and a high step-up and step-down conversion ratio are the development trends. In this research, a series of bidirectional high-gain Cuk circuits was derived by combining tapped inductors and bidirectio...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2022-08-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-17801-z |
| _version_ | 1798042571220451328 |
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| author | Hongxing Chen Wei-ming Lin Wen-ran Liu Wei He |
| author_facet | Hongxing Chen Wei-ming Lin Wen-ran Liu Wei He |
| author_sort | Hongxing Chen |
| collection | DOAJ |
| description | Abstract A bidirectional DC–DC converter is required for an energy storage system. High efficiency and a high step-up and step-down conversion ratio are the development trends. In this research, a series of bidirectional high-gain Cuk circuits was derived by combining tapped inductors and bidirectional Cuk. After analyzing and comparing the characteristics of each circuit, a bidirectional high-gain Cuk circuit with a tapped-inductor (reverse coupling) was proposed. The proposed converter has a simple structure and a high voltage gain in both the step-down (Buck) and step-up (Boost) operation modes. The voltage stress of S2 was low. The voltage stress of S1 was high, however, and this is a disadvantage of the proposed converter. The proposed circuit’s characteristics were thoroughly examined, including the voltage gain characteristics and the design of the main parameters. We established a power loss model of the new topology, and the tapped-inductor turn ratio was optimized for high efficiency. Finally, a 400 W experimental implementation of the converter was shown to achieve efficiencies of 93.5% and 92.4% in the step-up and step-down modes, respectively. These findings verified the validity of the proposed circuit’s theoretical analysis. |
| first_indexed | 2024-04-11T22:37:22Z |
| format | Article |
| id | doaj.art-085328075a2646d4b84c48607f81b26b |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-11T22:37:22Z |
| publishDate | 2022-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-085328075a2646d4b84c48607f81b26b2022-12-22T03:59:11ZengNature PortfolioScientific Reports2045-23222022-08-0112111610.1038/s41598-022-17801-zTapped-inductor bi-directional Cuk converter with high step-up/down conversion ratio and its optimum designHongxing Chen0Wei-ming Lin1Wen-ran Liu2Wei He3Fujian Engineering Research Center of Safety Control for Ship Intelligent Navigation, College of Physics and Electronic Information Engineering, Minjiang UniversityFujian Key Laboratory of New Energy Generation and Power Conversion, Fuzhou UniversityFujian Key Laboratory of New Energy Generation and Power Conversion, Fuzhou UniversityFujian Engineering Research Center of Safety Control for Ship Intelligent Navigation, College of Physics and Electronic Information Engineering, Minjiang UniversityAbstract A bidirectional DC–DC converter is required for an energy storage system. High efficiency and a high step-up and step-down conversion ratio are the development trends. In this research, a series of bidirectional high-gain Cuk circuits was derived by combining tapped inductors and bidirectional Cuk. After analyzing and comparing the characteristics of each circuit, a bidirectional high-gain Cuk circuit with a tapped-inductor (reverse coupling) was proposed. The proposed converter has a simple structure and a high voltage gain in both the step-down (Buck) and step-up (Boost) operation modes. The voltage stress of S2 was low. The voltage stress of S1 was high, however, and this is a disadvantage of the proposed converter. The proposed circuit’s characteristics were thoroughly examined, including the voltage gain characteristics and the design of the main parameters. We established a power loss model of the new topology, and the tapped-inductor turn ratio was optimized for high efficiency. Finally, a 400 W experimental implementation of the converter was shown to achieve efficiencies of 93.5% and 92.4% in the step-up and step-down modes, respectively. These findings verified the validity of the proposed circuit’s theoretical analysis.https://doi.org/10.1038/s41598-022-17801-z |
| spellingShingle | Hongxing Chen Wei-ming Lin Wen-ran Liu Wei He Tapped-inductor bi-directional Cuk converter with high step-up/down conversion ratio and its optimum design Scientific Reports |
| title | Tapped-inductor bi-directional Cuk converter with high step-up/down conversion ratio and its optimum design |
| title_full | Tapped-inductor bi-directional Cuk converter with high step-up/down conversion ratio and its optimum design |
| title_fullStr | Tapped-inductor bi-directional Cuk converter with high step-up/down conversion ratio and its optimum design |
| title_full_unstemmed | Tapped-inductor bi-directional Cuk converter with high step-up/down conversion ratio and its optimum design |
| title_short | Tapped-inductor bi-directional Cuk converter with high step-up/down conversion ratio and its optimum design |
| title_sort | tapped inductor bi directional cuk converter with high step up down conversion ratio and its optimum design |
| url | https://doi.org/10.1038/s41598-022-17801-z |
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