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Reduced Sensor Lyapunov-Based Control for Active Power Decoupling Circuit
  • +2
  • Yonglu Liu,
  • Yinhao Yuan,
  • Guo Xu,
  • Liting Li,
  • Wenjing Xiong
Yonglu Liu
Central South University School of Automation
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Yinhao Yuan
Central South University School of Automation
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Guo Xu
Central South University School of Automation

Corresponding Author:xuguocsu@csu.edu.cn

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Liting Li
Central South University School of Automation
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Wenjing Xiong
Central South University School of Automation
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Abstract

The double-line frequency ripple power exists inherently in single-phase power converters. To address this problem, active power decoupling technique (APD) is widely used. It diverts the ripple power into a small energy storage element through introducing passive and active power devices. This inevitably involves more voltage and current sensors for corresponding control, which raises the cost while decreasing reliability and power density. In this paper, a Lyapunov-based methodology is proposed to achieve APD control without adding any sensor. According to the designed controller laws, the practical decoupling capacitor voltage will converge to its reference. The decoupling voltage reference is given by taking into account buffering the double-line frequency ripple power. Afterwards, the robustness against parameter perturbations of the proposed method is discussed. Finally, the experimental results verify the feasibility of the proposed control strategy.
31 Jan 20241st Revision Received
02 Feb 2024Submission Checks Completed
02 Feb 2024Assigned to Editor
02 Feb 2024Review(s) Completed, Editorial Evaluation Pending
04 Feb 2024Reviewer(s) Assigned