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This paper proposes an energy management (EM) and control strategy for a DC microgrid (DCMG) utilizing photovoltaic (PV) and battery integrated with the main grid. The PI controller associated with the bidirectional DC-DC converter interlinking battery and DC bus regulates DC bus voltage. An EM strategy is designed to reduce energy dependence on the main grid by sensing load requirements, PV power generation, and battery SoC. The incremental conductance method (InC) is used to harness the optimum power from PV array. At the same time, the battery compensates for the unpredictable power generation from PV. The proposed work also regulates the battery SoC in a predetermined range to prevent overcharging and deep discharging, thus improving the battery lifetime. The proposed grid-connected DCMG is simulated in a MATLAB® environment to prove the efficacy of the system.

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Energy Management and Voltage Regulation in a Grid-Tied DC Microgrid to Minimize Energy Import from Grid

  • 会议论文

  • 发表日期：

    2025年

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  • Amit Kumar Rajput,
  • J. S. Lather

摘要

This paper proposes an energy management (EM) and control strategy for a DC microgrid (DCMG) utilizing photovoltaic (PV) and battery integrated with the main grid. The PI controller associated with the bidirectional DC-DC converter interlinking battery and DC bus regulates DC bus voltage. An EM strategy is designed to reduce energy dependence on the main grid by sensing load requirements, PV power generation, and battery SoC. The incremental conductance method (InC) is used to harness the optimum power from PV array. At the same time, the battery compensates for the unpredictable power generation from PV. The proposed work also regulates the battery SoC in a predetermined range to prevent overcharging and deep discharging, thus improving the battery lifetime. The proposed grid-connected DCMG is simulated in a MATLAB® environment to prove the efficacy of the system.