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Control Strategy of Three-port DC Converter based on Energy Balance
ID：533 View Protection：ATTENDEE Updated Time：2022-05-22 09:47:53 Hits：343 Poster Presentation

Start Time：Pending（Asia/Shanghai）

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Abstract
With the widespread access of new energy sources, the degree of power electronics in the power system has been greatly improved. As an important part of the power electronic power system, the DC transformer is the key equipment for connecting the medium and low voltage DC bus. In the case of ensuring the withstand voltage of the device, how to realize the stable transmission of power is a hot research topic at present. The modular three-port DC converter combines modular multi-level converter (MMC) with input-series output-parallel (ISOP), which not only solves the problem of device voltage stress, but also realizes multi-port energy interaction and improves power density. Based on this modular three-port DC converter, a comprehensive control strategy based on energy balance is proposed in this paper. The characteristic of this control strategy is that it not only stabilize the voltage on the low-voltage side, but also suppress the fluctuation of the capacitor voltage of the sub-module on the medium-voltage side. The simulation results show that the control strategy has good dynamic response ability and anti-disturbance ability.
 
Keywords
MMC; ISOP; Three-port DC converter; DCT; Energy Balance Control
Speaker
Yongtao Liang
华中科技大学

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Important Date

  • Conference Date

    May 27

    2022

    to

    May 29

    2022

  • Feb 28 2022

    Draft paper submission deadline

  • May 29 2022

    Registration deadline

  • Jun 22 2022

    Contribution Submission Deadline

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IEEE Beijing Section
China Electrotechnical Society
Southeast University
Supported By
IEEE Industry Applications Society
IEEE Nanjing Section
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