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Studies on a Hybrid Full-Bridge/Half-Bridge Bidirectional CLTC Multi-Resonant DC-DC Converter with a Digital Synchronous Rectification Strategy

Author

Listed:
  • Shu-huai Zhang

    (Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China)

  • Yi-feng Wang

    (Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China)

  • Bo Chen

    (Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China)

  • Fu-qiang Han

    (Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China)

  • Qing-cui Wang

    (Tianjin Research Institute of Electric Science Co., Ltd. (TRIED), Tianjin 300300, China)

Abstract

This study presents a new bidirectional multi-resonant DC-DC converter, which is named CLTC. The converter adds an auxiliary transformer and an extra resonant capacitor based on a LLC resonant DC-DC converter, achieving zero-voltage switching (ZVS) for the input inverting switches and zero-current switching (ZCS) for the output rectifiers in all load range. The converter also has a wide gain range in two directions. When the load is light, a half-bridge configuration is adopted instead of a full-bridge configuration to solve the problem of voltage regulation. By this method, the voltage gain becomes monotonous and controllable. Besides, the digital synchronous rectification strategy is proposed in forward mode without adding any auxiliary circuit. The conduction time of synchronous rectifiers equals the estimation value of body diodes’ conduction time with the lightest load. Power loss analysis is also conducted in different situations. Finally, the theoretical analysis is validated by a 5 kW prototype.

Suggested Citation

  • Shu-huai Zhang & Yi-feng Wang & Bo Chen & Fu-qiang Han & Qing-cui Wang, 2018. "Studies on a Hybrid Full-Bridge/Half-Bridge Bidirectional CLTC Multi-Resonant DC-DC Converter with a Digital Synchronous Rectification Strategy," Energies, MDPI, vol. 11(1), pages 1-22, January.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:1:p:227-:d:127582
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    References listed on IDEAS

    as
    1. Cheng-Shan Wang & Wei Li & Yi-Feng Wang & Fu-Qiang Han & Bo Chen, 2017. "A High-Efficiency Isolated LCLC Multi-Resonant Three-Port Bidirectional DC-DC Converter," Energies, MDPI, vol. 10(7), pages 1-22, July.
    2. Cheng-Shan Wang & Wei Li & Yi-Feng Wang & Fu-Qiang Han & Zhun Meng & Guo-Dong Li, 2017. "An Isolated Three-Port Bidirectional DC-DC Converter with Enlarged ZVS Region for HESS Applications in DC Microgrids," Energies, MDPI, vol. 10(4), pages 1-23, April.
    3. Wenzheng Xu & Nelson Hon Lung Chan & Siu Wing Or & Siu Lau Ho & Ka Wing Chan, 2017. "A New Control Method for a Bi-Directional Phase-Shift-Controlled DC-DC Converter with an Extended Load Range," Energies, MDPI, vol. 10(10), pages 1-17, October.
    4. Bo Chen & Ping Wang & Yifeng Wang & Wei Li & Fuqiang Han & Shuhuai Zhang, 2017. "Comparative Analysis and Optimization of Power Loss Based on the Isolated Series/Multi Resonant Three-Port Bidirectional DC-DC Converter," Energies, MDPI, vol. 10(10), pages 1-26, October.
    5. Guowei Cai & Duolun Liu & Chuang Liu & Wei Li & Jiajun Sun, 2017. "A High-Frequency Isolation (HFI) Charging DC Port Combining a Front-End Three-Level Converter with a Back-End LLC Resonant Converter," Energies, MDPI, vol. 10(10), pages 1-23, September.
    6. Cheng-Tao Tsai & Chih-Lung Shen & Jye-Chau Su, 2013. "A Power Supply System with ZVS and Current-Doubler Features for Hybrid Renewable Energy Conversion," Energies, MDPI, vol. 6(9), pages 1-20, September.
    7. Zhijian Fang & Junhua Wang & Shanxu Duan & Jianwei Shao & Guozheng Hu, 2017. "Stability Analysis and Trigger Control of LLC Resonant Converter for a Wide Operational Range," Energies, MDPI, vol. 10(10), pages 1-21, September.
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    Cited by:

    1. Shuhuai Zhang & Xuezhi Wu & Ziqian Zhang & Xuejiang Zhang, 2022. "A Bidirectional DHC-LT Resonant DC-DC Converter with Research on Improved Fundamental Harmonic Analysis Considering Phase Angle of Load Impedance," Energies, MDPI, vol. 15(14), pages 1-23, July.
    2. Kyunghwan Choi & Kyung-Soo Kim & Seok-Kyoon Kim, 2019. "Proportional-Type Sensor Fault Diagnosis Algorithm for DC/DC Boost Converters Based on Disturbance Observer," Energies, MDPI, vol. 12(8), pages 1-14, April.
    3. Jing-Yuan Lin & Yi-Feng Lin & Sih-Yi Lee, 2019. "A Novel Multi-Element Resonant Converter with Self-Driven Synchronous Rectification," Energies, MDPI, vol. 12(4), pages 1-10, February.
    4. Seok-Kyoon Kim, 2018. "Passivity-Based Robust Output Voltage Tracking Control of DC/DC Boost Converter for Wind Power Systems," Energies, MDPI, vol. 11(6), pages 1-13, June.
    5. Chien-Chun Huang & Tsung-Lin Tsai & Yao-Ching Hsieh & Huang-Jen Chiu, 2018. "A Bilateral Zero-Voltage Switching Bidirectional DC-DC Converter with Low Switching Noise," Energies, MDPI, vol. 11(10), pages 1-18, October.

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