Efficiency Optimization Design of L-LLC Resonant Bidirectional DC-DC Converter
The new type of L-LLC resonant bidirectional DC-DC converter (L-LLC-BDC) has merits of high efficiency, high-power density and wide gain and power ranges, and it is suitable for energy interface between energy storage systems and DC micro grid. However, the resonances are sensitive to the parasitic...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-05-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/11/3123 |
| _version_ | 1797532489853435904 |
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| author | Jing Lu Xiangqian Tong Jianwu Zeng Ming Shen Jun Yin |
| author_facet | Jing Lu Xiangqian Tong Jianwu Zeng Ming Shen Jun Yin |
| author_sort | Jing Lu |
| collection | DOAJ |
| description | The new type of L-LLC resonant bidirectional DC-DC converter (L-LLC-BDC) has merits of high efficiency, high-power density and wide gain and power ranges, and it is suitable for energy interface between energy storage systems and DC micro grid. However, the resonances are sensitive to the parasitic parameters, which will deteriorate the efficiency. This paper investigates the intrinsic mechanism of parasitic parameters on the L-LLC-BDC operating principle and working characteristics based on the analysis of working modes and resonance tank. By taking the oscillation of parasitic parameters produced in the stage for the freewheeling stage into consideration, a parameter optimization method is proposed to reduce the resonant current oscillation while maintaining the characteristic of the natural soft switching. The experiment results not only validated the proposed parameter optimization design method, but also testified to the improvement of the efficiency through the minimization of the conduction and switching loss. |
| first_indexed | 2024-03-10T10:59:54Z |
| format | Article |
| id | doaj.art-e3766686c3694ac79f7ddc8ec93e3bb7 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T10:59:54Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-e3766686c3694ac79f7ddc8ec93e3bb72023-11-21T21:35:34ZengMDPI AGEnergies1996-10732021-05-011411312310.3390/en14113123Efficiency Optimization Design of L-LLC Resonant Bidirectional DC-DC ConverterJing Lu0Xiangqian Tong1Jianwu Zeng2Ming Shen3Jun Yin4School of Electrical Engineering, Xi’an University of Technology, Xi’an 710048, ChinaSchool of Electrical Engineering, Xi’an University of Technology, Xi’an 710048, ChinaDepartment of Electrical and Computer Engineering & Technology, Minnesota State University, Mankato, MN 56001, USASchool of Electrical Engineering, Xi’an University of Technology, Xi’an 710048, ChinaSchool of Electrical Engineering, Xi’an University of Technology, Xi’an 710048, ChinaThe new type of L-LLC resonant bidirectional DC-DC converter (L-LLC-BDC) has merits of high efficiency, high-power density and wide gain and power ranges, and it is suitable for energy interface between energy storage systems and DC micro grid. However, the resonances are sensitive to the parasitic parameters, which will deteriorate the efficiency. This paper investigates the intrinsic mechanism of parasitic parameters on the L-LLC-BDC operating principle and working characteristics based on the analysis of working modes and resonance tank. By taking the oscillation of parasitic parameters produced in the stage for the freewheeling stage into consideration, a parameter optimization method is proposed to reduce the resonant current oscillation while maintaining the characteristic of the natural soft switching. The experiment results not only validated the proposed parameter optimization design method, but also testified to the improvement of the efficiency through the minimization of the conduction and switching loss.https://www.mdpi.com/1996-1073/14/11/3123L-LLC-BDCresonant parametersoptimization designmode analysisMOSFET output capacitance |
| spellingShingle | Jing Lu Xiangqian Tong Jianwu Zeng Ming Shen Jun Yin Efficiency Optimization Design of L-LLC Resonant Bidirectional DC-DC Converter Energies L-LLC-BDC resonant parameters optimization design mode analysis MOSFET output capacitance |
| title | Efficiency Optimization Design of L-LLC Resonant Bidirectional DC-DC Converter |
| title_full | Efficiency Optimization Design of L-LLC Resonant Bidirectional DC-DC Converter |
| title_fullStr | Efficiency Optimization Design of L-LLC Resonant Bidirectional DC-DC Converter |
| title_full_unstemmed | Efficiency Optimization Design of L-LLC Resonant Bidirectional DC-DC Converter |
| title_short | Efficiency Optimization Design of L-LLC Resonant Bidirectional DC-DC Converter |
| title_sort | efficiency optimization design of l llc resonant bidirectional dc dc converter |
| topic | L-LLC-BDC resonant parameters optimization design mode analysis MOSFET output capacitance |
| url | https://www.mdpi.com/1996-1073/14/11/3123 |
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