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Sliding Mode Control of Boost Converter with Constant Power Load Based on Continuous Finite-time Disturbance Observer
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Minggui MO, Jiarong WU, Weilin WU
Journal of Power Supply | 2026, 24(4) : 78 - 86
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Journal of Power Supply | 2026, 24(4): 78-86
• Power Converter Modeling and Control •
Sliding Mode Control of Boost Converter with Constant Power Load Based on Continuous Finite-time Disturbance Observer
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Minggui MO, Jiarong WU, Weilin WU
Affiliations
  • School of Electronic Information, Guangxi Minzu University, Nanning 530006, China
Published: 2026-04-30 doi: 10.13234/j.issn.2095-2805.2026.4.78
Outline
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To enhance the accuracy of power estimation for a Boost converter with constant power load (CPL) and improve the dynamic performance of the converter system, a sliding mode control strategy based on continuous finite-time disturbance observer is proposed. First, a nonlinear mathematical model for the converter system is established, which is further transformed into Brunovsky canonical form using the accurate feedback linearization technique. Afterwards, a disturbance observer is designed to estimate the total power value of CPL. To address the issues related to numerous adjustment parameters and significant output buffeting in conventional finite-time disturbance observers, a hyperbolic tangent function is introduced to design a continuous finite-time disturbance observer. Second, a non-singular fast terminal sliding mode controller is designed for the canonical form to enhance the robustness of the converter system, and the stability of the closed-loop system is proved based on the Lyapunov theory. Finally, both the simulation and experimental results validated the correctness and superiority of the proposed control strategy.

Exact feedback linearization  /  continuous finite-time disturbance observer  /  non-singular fast terminal sliding mode  /  constant power load (CPL)
莫明贵, 吴家荣, 吴伟林. 基于连续有限时间扰动观测器的带恒功率负载Boost变换器滑模控制. 电源学报, 2026 , 24 (4) : 78 -86 . DOI: 10.13234/j.issn.2095-2805.2026.4.78
Minggui MO, Jiarong WU, Weilin WU. Sliding Mode Control of Boost Converter with Constant Power Load Based on Continuous Finite-time Disturbance Observer[J]. Journal of Power Supply, 2026 , 24 (4) : 78 -86 . DOI: 10.13234/j.issn.2095-2805.2026.4.78
Funding
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  • Guangxi Natural Science Foundation(2026GXNSFAA00641098)
  • Experimental Technology Innovation Project of Guangxi Minzu University(2023MDSY017)
  • Guangxi Science and Technology Base and Talent Project(桂科AD23026199)
Appendix
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Year 2026 volume 24 Issue 4
45
5
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Article Info
doi: 10.13234/j.issn.2095-2805.2026.4.78
  • Receive Date：2023-08-23
  • Online Date：2026-10-29
  • Published：2026-04-30
Article Data
Affiliations
History
  • Received：2023-08-23
  • Revised：2023-11-18
  • Accepted：2023-12-17
Funding
Guangxi Natural Science Foundation(2026GXNSFAA00641098)
Experimental Technology Innovation Project of Guangxi Minzu University(2023MDSY017)
Guangxi Science and Technology Base and Talent Project(桂科AD23026199)
Affiliations
    School of Electronic Information, Guangxi Minzu University, Nanning 530006, China
References
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