A single switch high step-up DC-DC converter derived from coupled inductor and switched capacitor for a photovoltaic system
Abstract This study suggests a single switch high step-up DC-DC Converter derived from coupled inductor and switched capacitor used in Grid-Connected Photovoltaic systems. In the suggested converter, a part of the yield voltage is produced by parallel charging of the capacitors on the side of the se...
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Nature Portfolio
2024-11-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-024-78739-y |
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| author | Ali Sepahvandi Behrooz Rezaeealam Morteza Mikhak-Beyranvand |
| author_facet | Ali Sepahvandi Behrooz Rezaeealam Morteza Mikhak-Beyranvand |
| author_sort | Ali Sepahvandi |
| collection | DOAJ |
| description | Abstract This study suggests a single switch high step-up DC-DC Converter derived from coupled inductor and switched capacitor used in Grid-Connected Photovoltaic systems. In the suggested converter, a part of the yield voltage is produced by parallel charging of the capacitors on the side of the secondary winding and their series discharge together with the secondary winding. The other part of the output voltage is obtained by simultaneously charging the boost and buck-boost capacitors and discharging them in series with the input voltage source. Finally, these two parts make the output voltage in series, so that high voltage gain with proper duty cycle is obtained. In addition, boost and buck-boost capacitors absorb leakage inductance energy leading to a reduction of the switch voltage stress. As a result, switching losses are reduced and by choosing a switch with lower RDS(ON), conduction losses are also reduced. Finally, a prototype with an output power of 200 Watts, and a voltage conversion of 24–400 Volts was made to confirm the performance in the laboratory, which has the highest efficiency of 95.89%. |
| format | Article |
| id | doaj-art-ac6dd77b417a4581b8aa3c5d28f7870e |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-ac6dd77b417a4581b8aa3c5d28f7870e2024-11-17T12:19:28ZengNature PortfolioScientific Reports2045-23222024-11-0114112010.1038/s41598-024-78739-yA single switch high step-up DC-DC converter derived from coupled inductor and switched capacitor for a photovoltaic systemAli Sepahvandi0Behrooz Rezaeealam1Morteza Mikhak-Beyranvand2Lorestan UniversityLorestan UniversityTechnical and Vocational UniversityAbstract This study suggests a single switch high step-up DC-DC Converter derived from coupled inductor and switched capacitor used in Grid-Connected Photovoltaic systems. In the suggested converter, a part of the yield voltage is produced by parallel charging of the capacitors on the side of the secondary winding and their series discharge together with the secondary winding. The other part of the output voltage is obtained by simultaneously charging the boost and buck-boost capacitors and discharging them in series with the input voltage source. Finally, these two parts make the output voltage in series, so that high voltage gain with proper duty cycle is obtained. In addition, boost and buck-boost capacitors absorb leakage inductance energy leading to a reduction of the switch voltage stress. As a result, switching losses are reduced and by choosing a switch with lower RDS(ON), conduction losses are also reduced. Finally, a prototype with an output power of 200 Watts, and a voltage conversion of 24–400 Volts was made to confirm the performance in the laboratory, which has the highest efficiency of 95.89%.https://doi.org/10.1038/s41598-024-78739-yIndex terms—coupled inductorHigh voltage gainHigh step-up converterSwitched capacitor |
| spellingShingle | Ali Sepahvandi Behrooz Rezaeealam Morteza Mikhak-Beyranvand A single switch high step-up DC-DC converter derived from coupled inductor and switched capacitor for a photovoltaic system Scientific Reports Index terms—coupled inductor High voltage gain High step-up converter Switched capacitor |
| title | A single switch high step-up DC-DC converter derived from coupled inductor and switched capacitor for a photovoltaic system |
| title_full | A single switch high step-up DC-DC converter derived from coupled inductor and switched capacitor for a photovoltaic system |
| title_fullStr | A single switch high step-up DC-DC converter derived from coupled inductor and switched capacitor for a photovoltaic system |
| title_full_unstemmed | A single switch high step-up DC-DC converter derived from coupled inductor and switched capacitor for a photovoltaic system |
| title_short | A single switch high step-up DC-DC converter derived from coupled inductor and switched capacitor for a photovoltaic system |
| title_sort | single switch high step up dc dc converter derived from coupled inductor and switched capacitor for a photovoltaic system |
| topic | Index terms—coupled inductor High voltage gain High step-up converter Switched capacitor |
| url | https://doi.org/10.1038/s41598-024-78739-y |
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