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Combined Multilevel and Two-Phase Interleaved LLC Converter With Enhanced Power Processing Characteristics and Natural Current Sharing.

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Title: Combined Multilevel and Two-Phase Interleaved LLC Converter With Enhanced Power Processing Characteristics and Natural Current Sharing.
Authors: Kirshenboim, Or1, Peretz, Mor Mordechai1
Source: IEEE Transactions on Power Electronics. Jul2018, Vol. 33 Issue 7, p5613-5620. 8p.
Subjects: Multilevel codes, Two-phase flow, Converters (Electronics), Capacitors, Metal oxide semiconductor field-effect transistors
Abstract: This paper introduces a new two-phase interleaved flying-capacitor LLC converter topology with high output current applications. Compared to a conventional two-phase LLC converter, the new converter adds a single capacitor that contributes to lower voltage stress on the primary side's switches, automatically balances the current distribution between the phases, and enhances the power processing capabilities. All the attractive features of LLC converters are preserved, such as zero-voltage switching on the primary side's mosfets, zero-current switching on the secondary side's power devices, narrow switching frequency range, and simple design. Full principle of operation and analysis of the converter are described, as well as the converter's primary characteristics and the impact of nonideal components on the current sharing behavior. A 600 W, 400 V-to-12 V experimental prototype is used as a showcase of the attractive features of the new converter, demonstrating excellent current sharing, simple implementation, and high efficiency of up to 97.3%. [ABSTRACT FROM AUTHOR]
Copyright of IEEE Transactions on Power Electronics is the property of IEEE 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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  Data: Combined Multilevel and Two-Phase Interleaved LLC Converter With Enhanced Power Processing Characteristics and Natural Current Sharing.
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  Data: <searchLink fieldCode="JN" term="%22IEEE+Transactions+on+Power+Electronics%22">IEEE Transactions on Power Electronics</searchLink>. Jul2018, Vol. 33 Issue 7, p5613-5620. 8p.
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  Data: <searchLink fieldCode="DE" term="%22Multilevel+codes%22">Multilevel codes</searchLink><br /><searchLink fieldCode="DE" term="%22Two-phase+flow%22">Two-phase flow</searchLink><br /><searchLink fieldCode="DE" term="%22Converters+%28Electronics%29%22">Converters (Electronics)</searchLink><br /><searchLink fieldCode="DE" term="%22Capacitors%22">Capacitors</searchLink><br /><searchLink fieldCode="DE" term="%22Metal+oxide+semiconductor+field-effect+transistors%22">Metal oxide semiconductor field-effect transistors</searchLink>
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  Data: This paper introduces a new two-phase interleaved flying-capacitor LLC converter topology with high output current applications. Compared to a conventional two-phase LLC converter, the new converter adds a single capacitor that contributes to lower voltage stress on the primary side's switches, automatically balances the current distribution between the phases, and enhances the power processing capabilities. All the attractive features of LLC converters are preserved, such as zero-voltage switching on the primary side's <sc>mosfet</sc>s, zero-current switching on the secondary side's power devices, narrow switching frequency range, and simple design. Full principle of operation and analysis of the converter are described, as well as the converter's primary characteristics and the impact of nonideal components on the current sharing behavior. A 600 W, 400 V-to-12 V experimental prototype is used as a showcase of the attractive features of the new converter, demonstrating excellent current sharing, simple implementation, and high efficiency of up to 97.3%. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of IEEE Transactions on Power Electronics is the property of IEEE 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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      – Type: doi
        Value: 10.1109/TPEL.2017.2740342
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 8
        StartPage: 5613
    Subjects:
      – SubjectFull: Multilevel codes
        Type: general
      – SubjectFull: Two-phase flow
        Type: general
      – SubjectFull: Converters (Electronics)
        Type: general
      – SubjectFull: Capacitors
        Type: general
      – SubjectFull: Metal oxide semiconductor field-effect transistors
        Type: general
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      – TitleFull: Combined Multilevel and Two-Phase Interleaved LLC Converter With Enhanced Power Processing Characteristics and Natural Current Sharing.
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              Text: Jul2018
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              Y: 2018
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