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This paper investigates scenarios wherein the hosting capacity (HC) of a single-phase distribution line is nearly reached, prompting the addition of an onboard charger (OBC). The study focuses on the ensuing impact of this addition on the network, particularly in the context of the massive integration of inverter-based resources (IBRs). By conducting a systemic network approach, the proposed method involves modelling the system comprehensively to analyze interactions among various distribution network components. This approach facilitates a nuanced understanding and resolution of potential issues associated with integrating residential PV systems and OBC in weak distribution network systems. The analysis reveals that integrating IBRs in a weak grid induces overvoltage during low-load operations. While the integration of OBC effectively addresses the overvoltage issue, it introduces harmonic injection on the network. Simulation results using MATLAB-Simulink provide insights into these dynamics.

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Assessing Onboard Charger Effects in High Inverter-Based Resource Penetration Scenarios

  • 会议论文

  • 发表日期：

    2025年

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  • Sonia Moussa,
  • Hiba Helali,
  • Manel Jebali Ben Ghorbal,
  • Ilhem Slama-Belkhodja

摘要

This paper investigates scenarios wherein the hosting capacity (HC) of a single-phase distribution line is nearly reached, prompting the addition of an onboard charger (OBC). The study focuses on the ensuing impact of this addition on the network, particularly in the context of the massive integration of inverter-based resources (IBRs). By conducting a systemic network approach, the proposed method involves modelling the system comprehensively to analyze interactions among various distribution network components. This approach facilitates a nuanced understanding and resolution of potential issues associated with integrating residential PV systems and OBC in weak distribution network systems. The analysis reveals that integrating IBRs in a weak grid induces overvoltage during low-load operations. While the integration of OBC effectively addresses the overvoltage issue, it introduces harmonic injection on the network. Simulation results using MATLAB-Simulink provide insights into these dynamics.