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<p>To optimize voltage regulation performance and improve parallel branch equalization control under external disturbances, a model predictive control strategy for three-phase interleaved parallel boost converter based on super-twisting sliding mode observer is proposed in this paper. First, establish an ultralocal model to replace the original mathematical model, and design a super-twisting sliding mode observer to estimate the dynamic part of the ultralocal model. Then, a model predictive equalized current control strategy is introduced, which does not require parameter adjustment and achieves equalization of parallel branch currents. Simulation and experimental results demonstrate that the proposed control algorithm significantly improves system robustness. The start-up settling time of the converter is 10&#xa0;ms and no voltage overshoot. Single-phase inductive current ripple is 55&#xa0;mA, a 67% reduction compared to traditional PI control strategies.</p>

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A model predictive control strategy for three-phase interleaved parallel boost converter based on super-twisting sliding mode observer

  • 期刊论文

  • 发表日期：

    2026年2月3日

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  • Yufang Chang,
  • Longzhen Sun,
  • Peng Gao,
  • Huaicheng Yan,
  • Wencong Huang

摘要

To optimize voltage regulation performance and improve parallel branch equalization control under external disturbances, a model predictive control strategy for three-phase interleaved parallel boost converter based on super-twisting sliding mode observer is proposed in this paper. First, establish an ultralocal model to replace the original mathematical model, and design a super-twisting sliding mode observer to estimate the dynamic part of the ultralocal model. Then, a model predictive equalized current control strategy is introduced, which does not require parameter adjustment and achieves equalization of parallel branch currents. Simulation and experimental results demonstrate that the proposed control algorithm significantly improves system robustness. The start-up settling time of the converter is 10 ms and no voltage overshoot. Single-phase inductive current ripple is 55 mA, a 67% reduction compared to traditional PI control strategies.