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<p>This paper presents a novel approach to controlling the DC-link voltage of a three-phase rectifier by combining model predictive control (MPC) with input-state feedback linearization (ISFL). Unlike traditional methods that rely on a PI controller to generate a current reference for DC-link voltage regulation, the proposed strategy directly applies the DC voltage reference to the MPC. The method’s effectiveness was validated through simulations conducted on the Simulink/MATLAB platform, demonstrating robust performance in maintaining the DC-link voltage at its reference value and ensuring unity power factor, even under varying load conditions and during AC disturbances, such as phase imbalance and harmonic distortion. The results show improved performance over traditional FCS-PI control, highlighting the feasibility of using MPC combined with ISFL for rectifier control, handling system nonlinearities and respecting physical constraints. While the study focuses on simulation, the findings lay the groundwork for future experimental validation, confirming the viability of this approach in practical applications.</p>

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A Novel Approach to DC-Link Voltage Control Using MPC and Input-State Feedback Linearization

  • 期刊论文

  • 发表日期：

    2025年1月30日

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  • Estevão Modolo de Souza,
  • Lucas Frizera Encarnação

摘要

This paper presents a novel approach to controlling the DC-link voltage of a three-phase rectifier by combining model predictive control (MPC) with input-state feedback linearization (ISFL). Unlike traditional methods that rely on a PI controller to generate a current reference for DC-link voltage regulation, the proposed strategy directly applies the DC voltage reference to the MPC. The method’s effectiveness was validated through simulations conducted on the Simulink/MATLAB platform, demonstrating robust performance in maintaining the DC-link voltage at its reference value and ensuring unity power factor, even under varying load conditions and during AC disturbances, such as phase imbalance and harmonic distortion. The results show improved performance over traditional FCS-PI control, highlighting the feasibility of using MPC combined with ISFL for rectifier control, handling system nonlinearities and respecting physical constraints. While the study focuses on simulation, the findings lay the groundwork for future experimental validation, confirming the viability of this approach in practical applications.