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The power conversion system needs to accurately control the DC side current, PI controllers struggle to balance the robustness and immunity of the system. Firstly, a simplified model of the outer loop of DC current was established; Secondly, in order to reduce and eliminate the parameter coupling phenomenon of LESO and improve the observation ability of LESO, differential operation is introduced to reorganize LESO; Finally, the effectiveness of the proposed control strategy is verified by simulation and experiment.

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DC Current Outer Loop Control of Power Conversion System Based on Optimized First-Order Active Disturbance Rejection Control

  • 会议论文

  • 发表日期：

    2025年

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  • HaiHong Huang,
  • Lei Xie,
  • HaiXin Wang

摘要

The power conversion system needs to accurately control the DC side current, PI controllers struggle to balance the robustness and immunity of the system. Firstly, a simplified model of the outer loop of DC current was established; Secondly, in order to reduce and eliminate the parameter coupling phenomenon of LESO and improve the observation ability of LESO, differential operation is introduced to reorganize LESO; Finally, the effectiveness of the proposed control strategy is verified by simulation and experiment.