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A Variable-Structure Multi-Resonant DC–DC Converter with Smooth Switching

Author

Listed:
  • Mengying Chen

    (School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China)

  • Yifeng Wang

    (School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China)

  • Liang Yang

    (National Electric Power Dispatching and Control Center, State Grid Corporation of China, Beijing 100031, China)

  • Fuqiang Han

    (School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China)

  • Yuqi Hou

    (School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China)

  • Haiyun Yan

    (State Grid Tianjin Maintenance Company, Tianjin 300250, China)

Abstract

In this paper, a variable-structure multi-resonant soft-switching DC–DC converter and its transient smooth control method are proposed. Through the introduction of auxiliary switches, the converter can flexibly adjust its structure among three operating modes. Two switching processes can be obtained. Thus, a wide voltage gain range is achieved within a narrow frequency range. Moreover, to eliminate the large voltage fluctuation during modes switching, a drive signal gradual adjustment control method is proposed. Consequently, smooth switching between different modes can be realized and the voltage fluctuation is suppressed effectively. Finally, a 200 W experimental prototype is established to verify the theoretical analyses. Soft-switching performances for power switches and diodes are both guaranteed. The highest efficiency is 98.2%. With the proposed transient control method, a basically constant 400 V output voltage is ensured within a wide input voltage range (80 V–600 V). In particular, the transient voltage fluctuations during two switching processes decrease from 38.4 V to 10.8 V and from 37.2 V to 8.4 V, respectively.

Suggested Citation

  • Mengying Chen & Yifeng Wang & Liang Yang & Fuqiang Han & Yuqi Hou & Haiyun Yan, 2018. "A Variable-Structure Multi-Resonant DC–DC Converter with Smooth Switching," Energies, MDPI, vol. 11(9), pages 1-21, August.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:9:p:2240-:d:165981
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    References listed on IDEAS

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    1. Pilar Meneses de Quevedo & Javier Contreras, 2016. "Optimal Placement of Energy Storage and Wind Power under Uncertainty," Energies, MDPI, vol. 9(7), pages 1-18, July.
    2. Xisheng Tang & Yushu Sun & Guopeng Zhou & Fufeng Miao, 2017. "Coordinated Control of Multi-Type Energy Storage for Wind Power Fluctuation Suppression," Energies, MDPI, vol. 10(8), pages 1-16, August.
    3. Minh Y Nguyen & Dinh Hung Nguyen & Yong Tae Yoon, 2012. "A New Battery Energy Storage Charging/Discharging Scheme for Wind Power Producers in Real-Time Markets," Energies, MDPI, vol. 5(12), pages 1-14, December.
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