Analysis and Design of a Multiple-Driver Power Supply Based on a High-Frequency AC Bus.
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| Title: | Analysis and Design of a Multiple-Driver Power Supply Based on a High-Frequency AC Bus. |
|---|---|
| Authors: | He, Qingqing1 (AUTHOR), Tang, Zhaoyang1 (AUTHOR), Zhao, Wenzhe1 (AUTHOR), Zhou, Keliang1 (AUTHOR) keliang.zhou@whut.edu.cn |
| Source: | Energies (19961073). Jul2025, Vol. 18 Issue 14, p3748. 19p. |
| Subjects: | Current distribution, Power supply circuits, Electric power, Mechanical efficiency, Electric power systems, Converters (Electronics) |
| Abstract: | Multi-channel LED drivers are crucial for high-power lighting applications. Maintaining a constant average forward current is essential for stable LED luminous intensity, necessitating drivers capable of consistent current delivery across wide operating ranges. Meanwhile, achieving precise current sharing among channels without incurring high costs and system complexity is a significant challenge. Leveraging the constant-current characteristics of the LCL-T network, this paper presents a multi-channel DC/DC LED driver comprising a full-bridge inverter, a transformer, and a passive resonant rectifier. The driver generates a high-frequency AC bus with series-connected diode rectifiers, a structure that guarantees excellent current sharing among all output channels using only a single control loop. Fully considering the impact of higher harmonics, this paper derives an exact solution for the output current. A step-by-step parameter design methodology ensures soft switching and enhanced switch utilization. Finally, experimental verification was conducted using a prototype with five channels and 200 W, confirming the correctness and accuracy of the theoretical analysis. The experimental results showed that within a wide input voltage range of 380 V to 420 V, the driver was able to provide a stable current of 700 mA to each channel, and the system could achieve a peak efficiency of up to 94.4%. [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.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 186930496 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Analysis and Design of a Multiple-Driver Power Supply Based on a High-Frequency AC Bus. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22He%2C+Qingqing%22">He, Qingqing</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tang%2C+Zhaoyang%22">Tang, Zhaoyang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhao%2C+Wenzhe%22">Zhao, Wenzhe</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhou%2C+Keliang%22">Zhou, Keliang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> keliang.zhou@whut.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. Jul2025, Vol. 18 Issue 14, p3748. 19p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Current+distribution%22">Current distribution</searchLink><br /><searchLink fieldCode="DE" term="%22Power+supply+circuits%22">Power supply circuits</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+power%22">Electric power</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+efficiency%22">Mechanical efficiency</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+power+systems%22">Electric power systems</searchLink><br /><searchLink fieldCode="DE" term="%22Converters+%28Electronics%29%22">Converters (Electronics)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Multi-channel LED drivers are crucial for high-power lighting applications. Maintaining a constant average forward current is essential for stable LED luminous intensity, necessitating drivers capable of consistent current delivery across wide operating ranges. Meanwhile, achieving precise current sharing among channels without incurring high costs and system complexity is a significant challenge. Leveraging the constant-current characteristics of the LCL-T network, this paper presents a multi-channel DC/DC LED driver comprising a full-bridge inverter, a transformer, and a passive resonant rectifier. The driver generates a high-frequency AC bus with series-connected diode rectifiers, a structure that guarantees excellent current sharing among all output channels using only a single control loop. Fully considering the impact of higher harmonics, this paper derives an exact solution for the output current. A step-by-step parameter design methodology ensures soft switching and enhanced switch utilization. Finally, experimental verification was conducted using a prototype with five channels and 200 W, confirming the correctness and accuracy of the theoretical analysis. The experimental results showed that within a wide input voltage range of 380 V to 420 V, the driver was able to provide a stable current of 700 mA to each channel, and the system could achieve a peak efficiency of up to 94.4%. [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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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/en18143748 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 19 StartPage: 3748 Subjects: – SubjectFull: Current distribution Type: general – SubjectFull: Power supply circuits Type: general – SubjectFull: Electric power Type: general – SubjectFull: Mechanical efficiency Type: general – SubjectFull: Electric power systems Type: general – SubjectFull: Converters (Electronics) Type: general Titles: – TitleFull: Analysis and Design of a Multiple-Driver Power Supply Based on a High-Frequency AC Bus. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: He, Qingqing – PersonEntity: Name: NameFull: Tang, Zhaoyang – PersonEntity: Name: NameFull: Zhao, Wenzhe – PersonEntity: Name: NameFull: Zhou, Keliang IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 07 Text: Jul2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 19961073 Numbering: – Type: volume Value: 18 – Type: issue Value: 14 Titles: – TitleFull: Energies (19961073) Type: main |
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