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Stepwise Multi-Objective Parameter Optimization Design of LLC Resonant DC-DC Converter.

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Title: Stepwise Multi-Objective Parameter Optimization Design of LLC Resonant DC-DC Converter.
Authors: Yin, Miaomiao1 (AUTHOR) 202111021069t@cqu.edu.cn, Luo, Quanming1 (AUTHOR)
Source: Energies (19961073). Apr2024, Vol. 17 Issue 8, p1919. 24p.
Subjects: Pulse frequency modulation, DC-to-DC converters, Zero voltage switching, Converters (Electronics), Optimization algorithms
Abstract: The LLC resonant converter, which is extensively utilized across various industrial fields, significantly depends on its parameters for performance optimization. This paper establishes a time-domain analytical model for the LLC resonant converter under Pulse Frequency Modulation (PFM) and proposes a multi-objective parameter optimization design method with stepwise constraints. The proposed method limits the resonant capacitor voltage while ensuring that the converter meets the voltage gain requirement and realizes Zero-Voltage Switching (ZVS). The converter's performance is then optimized with the objective of minimizing the switching frequency range, the resonant inductor current, and the RMS value of the switching current on the secondary side. Compared with the existing methods, the proposed method has the advantages of comprehensive consideration and wide application scenarios. Finally, a 1200 W experimental prototype was fabricated, with experimental results verifying the feasibility of the proposed optimization design method and demonstrating that the prototype's maximum efficiency reaches 96.54%. [ABSTRACT FROM AUTHOR]
Copyright of Energies (19961073) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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Header DbId: egs
DbLabel: Engineering Source
An: 176904544
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PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
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  Data: Stepwise Multi-Objective Parameter Optimization Design of LLC Resonant DC-DC Converter.
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  Data: <searchLink fieldCode="AR" term="%22Yin%2C+Miaomiao%22">Yin, Miaomiao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 202111021069t@cqu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Luo%2C+Quanming%22">Luo, Quanming</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. Apr2024, Vol. 17 Issue 8, p1919. 24p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Pulse+frequency+modulation%22">Pulse frequency modulation</searchLink><br /><searchLink fieldCode="DE" term="%22DC-to-DC+converters%22">DC-to-DC converters</searchLink><br /><searchLink fieldCode="DE" term="%22Zero+voltage+switching%22">Zero voltage switching</searchLink><br /><searchLink fieldCode="DE" term="%22Converters+%28Electronics%29%22">Converters (Electronics)</searchLink><br /><searchLink fieldCode="DE" term="%22Optimization+algorithms%22">Optimization algorithms</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The LLC resonant converter, which is extensively utilized across various industrial fields, significantly depends on its parameters for performance optimization. This paper establishes a time-domain analytical model for the LLC resonant converter under Pulse Frequency Modulation (PFM) and proposes a multi-objective parameter optimization design method with stepwise constraints. The proposed method limits the resonant capacitor voltage while ensuring that the converter meets the voltage gain requirement and realizes Zero-Voltage Switching (ZVS). The converter's performance is then optimized with the objective of minimizing the switching frequency range, the resonant inductor current, and the RMS value of the switching current on the secondary side. Compared with the existing methods, the proposed method has the advantages of comprehensive consideration and wide application scenarios. Finally, a 1200 W experimental prototype was fabricated, with experimental results verifying the feasibility of the proposed optimization design method and demonstrating that the prototype's maximum efficiency reaches 96.54%. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Energies (19961073) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/en17081919
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      – Code: eng
        Text: English
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        PageCount: 24
        StartPage: 1919
    Subjects:
      – SubjectFull: Pulse frequency modulation
        Type: general
      – SubjectFull: DC-to-DC converters
        Type: general
      – SubjectFull: Zero voltage switching
        Type: general
      – SubjectFull: Converters (Electronics)
        Type: general
      – SubjectFull: Optimization algorithms
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      – TitleFull: Stepwise Multi-Objective Parameter Optimization Design of LLC Resonant DC-DC Converter.
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            NameFull: Yin, Miaomiao
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              M: 04
              Text: Apr2024
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              Y: 2024
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              Value: 17
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              Value: 8
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            – TitleFull: Energies (19961073)
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