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Design and Implementation of Improved High Step-Down DC-DC Converter for Electric Vehicles

Author

Listed:
  • Dong-Ryeol Park

    (Department of Electrical and Electronics Engineering, Seoyeong University, Paju 10843, Korea)

  • Yong Kim

    (Division of Electrical and Electronics Engineering, Dongguk University, Seoul 04620, Korea)

Abstract

An improved high step-down DC-DC converter for charging the batteries in an electric vehicle application is proposed in this paper. It adopts the topology of the conventional full-bridge converter, which has a coupled inductor current-doubler rectifier as the secondary side of the transformer. In addition, four power switches are driven using a phase-shifting technique. The proposed converter can achieve a high step-down voltage with low-voltage stress on the rectifier diodes. In addition, the coupled inductor current-doubler rectifier of the secondary side can reduce the ripple current and losses of the secondary side to achieve high efficiency. Furthermore, the proposed converter can overcome the drawbacks of the conventional full-bridge converter, such as switching loss caused by high switching frequency, duty-cycle loss, voltage stress, and numerous components, and can increase the efficiency with the soft-switching technique. A 600 W laboratory prototype of the proposed converter was manufactured. The results of the experiments performed with the prototype proved the effectiveness and validated the use of the proposed converter for better charging of electric vehicles.

Suggested Citation

  • Dong-Ryeol Park & Yong Kim, 2021. "Design and Implementation of Improved High Step-Down DC-DC Converter for Electric Vehicles," Energies, MDPI, vol. 14(14), pages 1-19, July.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:14:p:4206-:d:592952
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    References listed on IDEAS

    as
    1. Khairy Sayed & Ziad M. Ali & Mujahed Aldhaifallah, 2020. "Phase-Shift PWM-Controlled DC–DC Converter with Secondary-Side Current Doubler Rectifier for On-Board Charger Application," Energies, MDPI, vol. 13(9), pages 1-18, May.
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    Cited by:

    1. Shanshan Wang & Ming Gao & Jianjiang Shi, 2023. "A Family of Zero-Voltage-Transition Magnetic Coupling Bidirectional DC/DC Converters," Energies, MDPI, vol. 16(12), pages 1-18, June.
    2. Ileana González & Antonio Sánchez-Squella & Diego Langarica-Cordoba & Fernando Yanine-Misleh & Victor Ramirez, 2021. "A PI + Sliding-Mode Controller Based on the Discontinuous Conduction Mode for an Unidirectional Buck–Boost Converter with Electric Vehicle Applications," Energies, MDPI, vol. 14(20), pages 1-15, October.
    3. Dobroslav Kováč & Tibor Vince & Matej Bereš & Ján Molnár & Jozef Dziak & Patrik Jacko & Irena Kováčová, 2022. "A Universal PSpice Simulation Model of a Switched Buck Voltage Regulator," Energies, MDPI, vol. 15(21), pages 1-19, November.

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