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Full-Bridge Active-Clamp Forward-Flyback Converter with an Integrated Transformer for High-Performance and Low Cost Low-Voltage DC Converter of Vehicle Applications

Author

Listed:
  • Jaeil Baek

    (Department of Electrical Engineering, Princeton University, Princeton, NJ 08540, USA)

  • Han-Shin Youn

    (Department of Electrical Engineering, Incheon National University, 119, Academy-ro, Yeonsu-gu, Incheon 406840, Korea)

Abstract

This paper presents a full-bridge active-clamp forward-flyback (FBACFF) converter with an integrated transformer sharing a single primary winding. Compared to the conventional active-clamp-forward (ACF) converter, the proposed converter has low voltage stress on the primary switches due to its full-bridge active-clamp structure, which can leverage high performance Silicon- metal–oxide–semiconductor field-effect transistor (Si-MOSFET) of low voltage rating and low channel resistance. Integrating forward and flyback operations allows the proposed converter to have much lower primary root mean square (RMS) current than the conventional phase-shifted-full-bridge (PSFB) converter, while covering wide input/output voltage range with duty ratio over 0.5. The proposed integrated transformer reduces the transformer conduction loss and simplify the secondary structure of the proposed converter. As a result, the proposed converter has several advantages: (1) high heavy load efficiency, (2) wide input voltage range operation, (3) high power density with the integrated transformer, and (4) low cost. The proposed converter is a very promising candidate for applications with wide input voltage range and high power, such as the low-voltage DC (LDC) converter for eco-friendly vehicles.

Suggested Citation

  • Jaeil Baek & Han-Shin Youn, 2020. "Full-Bridge Active-Clamp Forward-Flyback Converter with an Integrated Transformer for High-Performance and Low Cost Low-Voltage DC Converter of Vehicle Applications," Energies, MDPI, vol. 13(4), pages 1-17, February.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:4:p:863-:d:321340
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    Citations

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    Cited by:

    1. Ghulam Abbas & Muhammad Usman Asad & Jason Gu & Salem Alelyani & Valentina E. Balas & Mohammad Rashid Hussain & Umar Farooq & Ahmed Bilal Awan & Ali Raza & Chunqi Chang, 2020. "Multivariable Unconstrained Pattern Search Method for Optimizing Digital PID Controllers Applied to Isolated Forward Converter," Energies, MDPI, vol. 14(1), pages 1-23, December.
    2. Dae-Woo Lee & Ji-Hoon Lim & Dong-In Lee & Han-Shin Youn, 2022. "A High-Power-Density Active-Clamp Converter with Integrated Planar Transformer," Energies, MDPI, vol. 15(15), pages 1-19, August.
    3. Rustam Kumar & Chih-Chiang Wu & Ching-Yao Liu & Yu-Lin Hsiao & Wei-Hua Chieng & Edward-Yi Chang, 2021. "Discontinuous Current Mode Modeling and Zero Current Switching of Flyback Converter," Energies, MDPI, vol. 14(18), pages 1-23, September.

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