Extended ZVS-On/ZCS-Off Range for CF-DAB Converter Under DCM Operation for Residential Energy Storage Systems
Current-Fed Dual-Active Bridge (CF-DAB) converters are interesting in bidirectional applications when a wide conversion voltage ratio is required, such as residential extra-low voltage energy storage systems, where conventional DAB converters have several limitations. Even though many developments h...
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| Format: | Article |
| Language: | English |
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IEEE
2023-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/10292846/ |
| _version_ | 1797635391776358400 |
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| author | Edivan Laercio Carvalho Rafael Cardoso Carla Aparecida Felipe Carlos Marcelo De Oliveira Stein Lucas Vizzotto Bellinaso Leandro Michels Dmitri Vinnikov |
| author_facet | Edivan Laercio Carvalho Rafael Cardoso Carla Aparecida Felipe Carlos Marcelo De Oliveira Stein Lucas Vizzotto Bellinaso Leandro Michels Dmitri Vinnikov |
| author_sort | Edivan Laercio Carvalho |
| collection | DOAJ |
| description | Current-Fed Dual-Active Bridge (CF-DAB) converters are interesting in bidirectional applications when a wide conversion voltage ratio is required, such as residential extra-low voltage energy storage systems, where conventional DAB converters have several limitations. Even though many developments have been made in the last few years to improve the CF-DAB technology for such applications, ensuring a flat efficiency curve is still challenging since it is difficult to ensure high efficiency at very low power. Current solutions include phase-shift modulations (PSM), dual phase-shift (DPSM), and hybrid approaches. This paper proposes an asymmetrical pulse width modulation (a-PWM) strategy to operate the CF-DAB in discontinuous conduction mode (DCM), improving the converter efficiency curve at low power. The DCM operation ensures soft-switching conditions over a wide operation range, providing a simple and effective solution. It is relevant to CF-DAB converter development because conventional modulations have limitations concerning the soft-switching range and usually result in overvoltage problems. A 500 W prototype was built and tested to evaluate this proposal. The experimental results show that the a-PWM ensures soft-switching from 2% to 100% of the converter rated power, and the efficiency curve is almost flat due to the improved efficiency at low power levels. |
| first_indexed | 2024-03-11T12:20:27Z |
| format | Article |
| id | doaj.art-12000a9b9cbe495ab90bc68ee408d5c0 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-03-11T12:20:27Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-12000a9b9cbe495ab90bc68ee408d5c02023-11-07T00:02:55ZengIEEEIEEE Access2169-35362023-01-011111923111924310.1109/ACCESS.2023.332721910292846Extended ZVS-On/ZCS-Off Range for CF-DAB Converter Under DCM Operation for Residential Energy Storage SystemsEdivan Laercio Carvalho0https://orcid.org/0000-0002-8389-8703Rafael Cardoso1https://orcid.org/0000-0002-2193-2056Carla Aparecida Felipe2Carlos Marcelo De Oliveira Stein3https://orcid.org/0000-0001-5339-7441Lucas Vizzotto Bellinaso4https://orcid.org/0000-0002-0979-0948Leandro Michels5https://orcid.org/0000-0002-7961-8836Dmitri Vinnikov6https://orcid.org/0000-0001-6010-3464Department of Electrical Power Engineering and Mechatronics, Tallinn University of Technology, Tallinn, EstoniaStatic Converters Engineering Research Group, Federal University of Technology-Paraná, Pato Branco Campus, Pato Branco, BrazilStatic Converters Engineering Research Group, Federal University of Technology-Paraná, Pato Branco Campus, Pato Branco, BrazilStatic Converters Engineering Research Group, Federal University of Technology-Paraná, Pato Branco Campus, Pato Branco, BrazilPower Electronics and Control Research Group, Federal University of Santa Maria, Santa Maria, BrazilPower Electronics and Control Research Group, Federal University of Santa Maria, Santa Maria, BrazilDepartment of Electrical Power Engineering and Mechatronics, Tallinn University of Technology, Tallinn, EstoniaCurrent-Fed Dual-Active Bridge (CF-DAB) converters are interesting in bidirectional applications when a wide conversion voltage ratio is required, such as residential extra-low voltage energy storage systems, where conventional DAB converters have several limitations. Even though many developments have been made in the last few years to improve the CF-DAB technology for such applications, ensuring a flat efficiency curve is still challenging since it is difficult to ensure high efficiency at very low power. Current solutions include phase-shift modulations (PSM), dual phase-shift (DPSM), and hybrid approaches. This paper proposes an asymmetrical pulse width modulation (a-PWM) strategy to operate the CF-DAB in discontinuous conduction mode (DCM), improving the converter efficiency curve at low power. The DCM operation ensures soft-switching conditions over a wide operation range, providing a simple and effective solution. It is relevant to CF-DAB converter development because conventional modulations have limitations concerning the soft-switching range and usually result in overvoltage problems. A 500 W prototype was built and tested to evaluate this proposal. The experimental results show that the a-PWM ensures soft-switching from 2% to 100% of the converter rated power, and the efficiency curve is almost flat due to the improved efficiency at low power levels.https://ieeexplore.ieee.org/document/10292846/Current-fed convertersDC–DC power convertersisolated power convertersresidential energy storage systemssoft-switching |
| spellingShingle | Edivan Laercio Carvalho Rafael Cardoso Carla Aparecida Felipe Carlos Marcelo De Oliveira Stein Lucas Vizzotto Bellinaso Leandro Michels Dmitri Vinnikov Extended ZVS-On/ZCS-Off Range for CF-DAB Converter Under DCM Operation for Residential Energy Storage Systems IEEE Access Current-fed converters DC–DC power converters isolated power converters residential energy storage systems soft-switching |
| title | Extended ZVS-On/ZCS-Off Range for CF-DAB Converter Under DCM Operation for Residential Energy Storage Systems |
| title_full | Extended ZVS-On/ZCS-Off Range for CF-DAB Converter Under DCM Operation for Residential Energy Storage Systems |
| title_fullStr | Extended ZVS-On/ZCS-Off Range for CF-DAB Converter Under DCM Operation for Residential Energy Storage Systems |
| title_full_unstemmed | Extended ZVS-On/ZCS-Off Range for CF-DAB Converter Under DCM Operation for Residential Energy Storage Systems |
| title_short | Extended ZVS-On/ZCS-Off Range for CF-DAB Converter Under DCM Operation for Residential Energy Storage Systems |
| title_sort | extended zvs on zcs off range for cf dab converter under dcm operation for residential energy storage systems |
| topic | Current-fed converters DC–DC power converters isolated power converters residential energy storage systems soft-switching |
| url | https://ieeexplore.ieee.org/document/10292846/ |
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