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<p>The rapid growth of electric vehicle (EV) adoption has introduced new challenges to power distribution networks, primarily due to the nonlinear behavior of EV chargers. These devices generate significant harmonic currents, leading to increased total harmonic distortion (THD), power losses, and reduced system efficiency. To address these issues, this paper proposes a hybrid filtering approach that integrates a passive LC filter with a Shunt Active Power Filter (SAPF) for enhanced harmonic mitigation in grid-connected EV charging systems. The LC filter provides fixed-frequency harmonic suppression, while the SAPF dynamically compensates for variable and higher-order harmonic components. The coordinated operation of both filters ensures sinusoidal source currents and compliance with power quality standards such as IEEE 519. The proposed configuration not only enhances the reliability of the EV charging process but also contributes to the stability and efficiency of the overall distribution network. Simulation-based analysis confirms the effectiveness of the hybrid filter setup in reducing THD and improving system performance under various load conditions.</p>

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Grid-Integrated EV Charging with Hybrid Filters for Enhanced Harmonic Suppression

  • 期刊论文

  • 发表日期：

    2026年2月18日

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  • Senchugarla Sumalatha,
  • Yeddula Pedda Obulesu

摘要

The rapid growth of electric vehicle (EV) adoption has introduced new challenges to power distribution networks, primarily due to the nonlinear behavior of EV chargers. These devices generate significant harmonic currents, leading to increased total harmonic distortion (THD), power losses, and reduced system efficiency. To address these issues, this paper proposes a hybrid filtering approach that integrates a passive LC filter with a Shunt Active Power Filter (SAPF) for enhanced harmonic mitigation in grid-connected EV charging systems. The LC filter provides fixed-frequency harmonic suppression, while the SAPF dynamically compensates for variable and higher-order harmonic components. The coordinated operation of both filters ensures sinusoidal source currents and compliance with power quality standards such as IEEE 519. The proposed configuration not only enhances the reliability of the EV charging process but also contributes to the stability and efficiency of the overall distribution network. Simulation-based analysis confirms the effectiveness of the hybrid filter setup in reducing THD and improving system performance under various load conditions.