Interleaved switched-capacitor bidirectional DC-DC converter with wide voltage-gain range for energy storage systems
In this paper, an interleaved switched-capacitor bidirectional DC-DC converter with a high step-up/step-down voltage gain is proposed. The interleaved structure is adopted in the low-voltage side of this converter to reduce the ripple of the current through the low-voltage side, and the series-conne...
| Main Authors: | , , , |
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| Format: | Article |
| Published: |
IEEE
2017
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| Online Access: | https://eprints.nottingham.ac.uk/45196/ |
| _version_ | 1848797087296126976 |
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| author | Zhang, Yun Gao, Yongpin Li, Jing Sumner, Mark |
| author_facet | Zhang, Yun Gao, Yongpin Li, Jing Sumner, Mark |
| author_sort | Zhang, Yun |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | In this paper, an interleaved switched-capacitor bidirectional DC-DC converter with a high step-up/step-down voltage gain is proposed. The interleaved structure is adopted in the low-voltage side of this converter to reduce the ripple of the current through the low-voltage side, and the series-connected structure is adopted in the high-voltage side to achieve the high step-up/step-down voltage gain. In addition, the bidirectional synchronous rectification operations are carried out without requiring any extra hardware, and the efficiency of the converter is improved. Furthermore, the operating principles, voltage and current stresses, and current ripple characteristics of the converter are analyzed. Finally, a 1kW prototype has been developed which verifies a wide voltage-gain range of this converter between the variable low-voltage side (50V-120V) and the constant high-voltage side (400V). The maximum efficiency of the converter is 95.21% in the step-up mode and 95.30% in the step-down mode. The experimental results also validate the feasibility and the effectiveness of the proposed topology. |
| first_indexed | 2025-11-14T19:58:18Z |
| format | Article |
| id | nottingham-45196 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:58:18Z |
| publishDate | 2017 |
| publisher | IEEE |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-451962020-05-04T18:51:14Z https://eprints.nottingham.ac.uk/45196/ Interleaved switched-capacitor bidirectional DC-DC converter with wide voltage-gain range for energy storage systems Zhang, Yun Gao, Yongpin Li, Jing Sumner, Mark In this paper, an interleaved switched-capacitor bidirectional DC-DC converter with a high step-up/step-down voltage gain is proposed. The interleaved structure is adopted in the low-voltage side of this converter to reduce the ripple of the current through the low-voltage side, and the series-connected structure is adopted in the high-voltage side to achieve the high step-up/step-down voltage gain. In addition, the bidirectional synchronous rectification operations are carried out without requiring any extra hardware, and the efficiency of the converter is improved. Furthermore, the operating principles, voltage and current stresses, and current ripple characteristics of the converter are analyzed. Finally, a 1kW prototype has been developed which verifies a wide voltage-gain range of this converter between the variable low-voltage side (50V-120V) and the constant high-voltage side (400V). The maximum efficiency of the converter is 95.21% in the step-up mode and 95.30% in the step-down mode. The experimental results also validate the feasibility and the effectiveness of the proposed topology. IEEE 2017-06-23 Article PeerReviewed Zhang, Yun, Gao, Yongpin, Li, Jing and Sumner, Mark (2017) Interleaved switched-capacitor bidirectional DC-DC converter with wide voltage-gain range for energy storage systems. IEEE Transactions on Power Electronics . ISSN 0885-8993 http://ieeexplore.ieee.org/document/7956297/ doi:10.1109/TPEL.2017.2719402 doi:10.1109/TPEL.2017.2719402 |
| spellingShingle | Zhang, Yun Gao, Yongpin Li, Jing Sumner, Mark Interleaved switched-capacitor bidirectional DC-DC converter with wide voltage-gain range for energy storage systems |
| title | Interleaved switched-capacitor bidirectional DC-DC converter with wide voltage-gain range for energy storage systems |
| title_full | Interleaved switched-capacitor bidirectional DC-DC converter with wide voltage-gain range for energy storage systems |
| title_fullStr | Interleaved switched-capacitor bidirectional DC-DC converter with wide voltage-gain range for energy storage systems |
| title_full_unstemmed | Interleaved switched-capacitor bidirectional DC-DC converter with wide voltage-gain range for energy storage systems |
| title_short | Interleaved switched-capacitor bidirectional DC-DC converter with wide voltage-gain range for energy storage systems |
| title_sort | interleaved switched-capacitor bidirectional dc-dc converter with wide voltage-gain range for energy storage systems |
| url | https://eprints.nottingham.ac.uk/45196/ https://eprints.nottingham.ac.uk/45196/ https://eprints.nottingham.ac.uk/45196/ |