Analysis and Design of a Multiple-Driver Power Supply Based on a High-Frequency AC Bus
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 s...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-07-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/18/14/3748 |
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| author | Qingqing He Zhaoyang Tang Wenzhe Zhao Keliang Zhou |
| author_facet | Qingqing He Zhaoyang Tang Wenzhe Zhao Keliang Zhou |
| author_sort | Qingqing He |
| collection | DOAJ |
| description | 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%. |
| format | Article |
| id | doaj-art-48324e421859472099c8dc2e315f252d |
| institution | Kabale University |
| issn | 1996-1073 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj-art-48324e421859472099c8dc2e315f252d2025-08-20T03:32:31ZengMDPI AGEnergies1996-10732025-07-011814374810.3390/en18143748Analysis and Design of a Multiple-Driver Power Supply Based on a High-Frequency AC BusQingqing He0Zhaoyang Tang1Wenzhe Zhao2Keliang Zhou3School of Automation, Wuhan University of Technology, Wuhan 430070, ChinaSchool of Automation, Wuhan University of Technology, Wuhan 430070, ChinaSchool of Automation, Wuhan University of Technology, Wuhan 430070, ChinaSchool of Automation, Wuhan University of Technology, Wuhan 430070, ChinaMulti-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%.https://www.mdpi.com/1996-1073/18/14/3748parameter designDC-supplied LED driversfull-bridge inverterhigh-frequency AC busLCL-T network |
| spellingShingle | Qingqing He Zhaoyang Tang Wenzhe Zhao Keliang Zhou Analysis and Design of a Multiple-Driver Power Supply Based on a High-Frequency AC Bus Energies parameter design DC-supplied LED drivers full-bridge inverter high-frequency AC bus LCL-T network |
| title | Analysis and Design of a Multiple-Driver Power Supply Based on a High-Frequency AC Bus |
| title_full | Analysis and Design of a Multiple-Driver Power Supply Based on a High-Frequency AC Bus |
| title_fullStr | Analysis and Design of a Multiple-Driver Power Supply Based on a High-Frequency AC Bus |
| title_full_unstemmed | Analysis and Design of a Multiple-Driver Power Supply Based on a High-Frequency AC Bus |
| title_short | Analysis and Design of a Multiple-Driver Power Supply Based on a High-Frequency AC Bus |
| title_sort | analysis and design of a multiple driver power supply based on a high frequency ac bus |
| topic | parameter design DC-supplied LED drivers full-bridge inverter high-frequency AC bus LCL-T network |
| url | https://www.mdpi.com/1996-1073/18/14/3748 |
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