Scholarlink

<p>Conventional model-free predictive control (MFPC) for three-level NPC rectifiers suffers from two inherent drawbacks: chattering induced by the sliding-mode observer (SMO) and poor dynamic performance of the voltage regulation loop. To address these issues simultaneously, this paper proposed a unified solution combining a high-order fast terminal SMO (HOFTSMO) for chattering suppression and a non-singular fast terminal sliding-mode controller (NFTSMC) with a variable reaching law for the voltage loop. The HOFTSMO fundamentally mitigates chattering to ensure superior current quality, whereas the NFTSMC, with its variable reaching law, guarantees fast and robust voltage regulation under transients. Experimental results demonstrate that the proposed method significantly reduces the current total harmonic distortion (THD) and improves the transient performance compared to conventional MFPC approaches. This work provides a robust and parameter-immune solution for high-performance power conversion systems.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

High-order fast terminal sliding-mode observer- based model-free predictive control for three-level NPC rectifiers

  • 期刊论文

  • 发表日期：

    2026年7月24日

查看全文
  • Xiao Zhang,
  • Jiapeng Cao,
  • Bo Yang,
  • Hui Zhang,
  • Zerun Liu,
  • Cancan Ning,
  • Jifeng Zhu

摘要

Conventional model-free predictive control (MFPC) for three-level NPC rectifiers suffers from two inherent drawbacks: chattering induced by the sliding-mode observer (SMO) and poor dynamic performance of the voltage regulation loop. To address these issues simultaneously, this paper proposed a unified solution combining a high-order fast terminal SMO (HOFTSMO) for chattering suppression and a non-singular fast terminal sliding-mode controller (NFTSMC) with a variable reaching law for the voltage loop. The HOFTSMO fundamentally mitigates chattering to ensure superior current quality, whereas the NFTSMC, with its variable reaching law, guarantees fast and robust voltage regulation under transients. Experimental results demonstrate that the proposed method significantly reduces the current total harmonic distortion (THD) and improves the transient performance compared to conventional MFPC approaches. This work provides a robust and parameter-immune solution for high-performance power conversion systems.