A Hardware-Simplified Soft-Start Scheme for Current-Fed Full-Bridge DC-DC Converter
At present, the current-fed full-bridge DC-DC converter still faces two inherent defects, namely, the soft-start issue during the start-up process and the voltage spike issue in normal working conditions. In existing research, a large number of attempts have been reported to overcome these two inher...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/13/1/180 |
| _version_ | 1797358929786699776 |
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| author | Shupeng Li Zhenbin Li Weiqi Meng Jinwei He |
| author_facet | Shupeng Li Zhenbin Li Weiqi Meng Jinwei He |
| author_sort | Shupeng Li |
| collection | DOAJ |
| description | At present, the current-fed full-bridge DC-DC converter still faces two inherent defects, namely, the soft-start issue during the start-up process and the voltage spike issue in normal working conditions. In existing research, a large number of attempts have been reported to overcome these two inherent issues. However, the existing solutions are all based on both redundant soft-start circuits and snubber circuits, and two different circuits are required. As a result, the cost of the current-fed full-bridge DC-DC converter is high, especially because the soft-start circuits are only used during the start-up process. So, to reduce device redundancy, a hardware-simplified soft-start scheme is proposed in this paper. In the proposed scheme, the snubber circuit is reused for the soft-start process based on topology reconfiguration, avoiding additional soft-start circuits to reduce the cost of this DC-DC converter. In this proposed method, the current-fed full-bridge DC-DC converter is operated as the voltage-fed full-bridge DC-DC converter by always turning on the snubber switch during the start-up process. Then, the output capacitor can be charged by slowly increasing the output voltage of the H bridge. Then, when the output voltage is high enough, the current-fed full-bridge DC-DC converter is again operated in the current-fed mode to boost the voltage. Subsequently, the converter characters and control strategy were examined and analyzed. The experimental results verify the feasibility of the proposed hardware-simplified soft-start scheme for the current-fed full-bridge DC-DC converter. |
| first_indexed | 2024-03-08T15:08:20Z |
| format | Article |
| id | doaj.art-4db14384bf8e4ed7976b480690bed4f1 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-08T15:08:20Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-4db14384bf8e4ed7976b480690bed4f12024-01-10T14:55:00ZengMDPI AGElectronics2079-92922023-12-0113118010.3390/electronics13010180A Hardware-Simplified Soft-Start Scheme for Current-Fed Full-Bridge DC-DC ConverterShupeng Li0Zhenbin Li1Weiqi Meng2Jinwei He3State Grid Tianjin Electric Power Research Institute, Tianjin 300392, ChinaState Grid Tianjin Electric Power Research Institute, Tianjin 300392, ChinaSchool of Electrical and Information Engineering, Tianjin University, Tianjin 300072, ChinaSchool of Electrical and Information Engineering, Tianjin University, Tianjin 300072, ChinaAt present, the current-fed full-bridge DC-DC converter still faces two inherent defects, namely, the soft-start issue during the start-up process and the voltage spike issue in normal working conditions. In existing research, a large number of attempts have been reported to overcome these two inherent issues. However, the existing solutions are all based on both redundant soft-start circuits and snubber circuits, and two different circuits are required. As a result, the cost of the current-fed full-bridge DC-DC converter is high, especially because the soft-start circuits are only used during the start-up process. So, to reduce device redundancy, a hardware-simplified soft-start scheme is proposed in this paper. In the proposed scheme, the snubber circuit is reused for the soft-start process based on topology reconfiguration, avoiding additional soft-start circuits to reduce the cost of this DC-DC converter. In this proposed method, the current-fed full-bridge DC-DC converter is operated as the voltage-fed full-bridge DC-DC converter by always turning on the snubber switch during the start-up process. Then, the output capacitor can be charged by slowly increasing the output voltage of the H bridge. Then, when the output voltage is high enough, the current-fed full-bridge DC-DC converter is again operated in the current-fed mode to boost the voltage. Subsequently, the converter characters and control strategy were examined and analyzed. The experimental results verify the feasibility of the proposed hardware-simplified soft-start scheme for the current-fed full-bridge DC-DC converter.https://www.mdpi.com/2079-9292/13/1/180current-fedsoft-startvoltage spikesnubber circuit |
| spellingShingle | Shupeng Li Zhenbin Li Weiqi Meng Jinwei He A Hardware-Simplified Soft-Start Scheme for Current-Fed Full-Bridge DC-DC Converter Electronics current-fed soft-start voltage spike snubber circuit |
| title | A Hardware-Simplified Soft-Start Scheme for Current-Fed Full-Bridge DC-DC Converter |
| title_full | A Hardware-Simplified Soft-Start Scheme for Current-Fed Full-Bridge DC-DC Converter |
| title_fullStr | A Hardware-Simplified Soft-Start Scheme for Current-Fed Full-Bridge DC-DC Converter |
| title_full_unstemmed | A Hardware-Simplified Soft-Start Scheme for Current-Fed Full-Bridge DC-DC Converter |
| title_short | A Hardware-Simplified Soft-Start Scheme for Current-Fed Full-Bridge DC-DC Converter |
| title_sort | hardware simplified soft start scheme for current fed full bridge dc dc converter |
| topic | current-fed soft-start voltage spike snubber circuit |
| url | https://www.mdpi.com/2079-9292/13/1/180 |
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