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<p>This paper introduces a groundbreaking approach to electric vehicle (EV) charging by integrating renewable energy sources through a state-of-the-art power conversion system. Central to this innovation is a One-Switch Extreme-High Voltage DC Converter (OSEHVDC), which incorporates a novel Voltage Multiplier Unit (VMU) and a three-winding Coupled Inductor (CI) to achieve exceptional voltage gain. The Proportional Integral Derivative Method (PIDM)-based control ensures unmatched dynamic responsiveness, marked by fast rise times and minimal overshoot. The design minimizes output voltage ripple, efficiently recovers CI leakage inductance energy, and uses a passive clamp circuit to manage voltage stress on the main switch, reducing conduction losses and system cost. Featuring a common ground between input and output, the converter is adaptable to various applications, including photovoltaic systems. Key attributes include extreme-high voltage gain, low-duty cycle operation, reduced semiconductor voltage stress, continuous input current, and high efficiency. The paper details the converter's operational principles, steady-state analysis, design considerations, and theoretical efficiency analysis, highlighting its superiority over existing converters. Simulation and experimental results show exceptional efficiency, achieving 97.2% in simulations and 98% in hardware tests for a 0.7&#xa0;kW system with a 35&#xa0;V DC input from solar photovoltaic (SPV). The proposed system demonstrates rapid dynamics, robustness to load impedance variations, and effective voltage control without additional gain tuning. This research offers a transformative solution, enhancing EV charging efficiency and supporting sustainable transportation infrastructure through renewable energy integration. </p>

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Optimizing EV Charging with Improved Energy Storage: Boosting Efficiency and Stability with a Renewable Energy-Integrated Ultra-High Voltage DC-DC Converter

  • 期刊论文

  • 发表日期：

    2025年7月16日

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  • S. Prathiba,
  • P. Anitha,
  • A. S. Kamaraja,
  • K. Karthik Kumar

摘要

This paper introduces a groundbreaking approach to electric vehicle (EV) charging by integrating renewable energy sources through a state-of-the-art power conversion system. Central to this innovation is a One-Switch Extreme-High Voltage DC Converter (OSEHVDC), which incorporates a novel Voltage Multiplier Unit (VMU) and a three-winding Coupled Inductor (CI) to achieve exceptional voltage gain. The Proportional Integral Derivative Method (PIDM)-based control ensures unmatched dynamic responsiveness, marked by fast rise times and minimal overshoot. The design minimizes output voltage ripple, efficiently recovers CI leakage inductance energy, and uses a passive clamp circuit to manage voltage stress on the main switch, reducing conduction losses and system cost. Featuring a common ground between input and output, the converter is adaptable to various applications, including photovoltaic systems. Key attributes include extreme-high voltage gain, low-duty cycle operation, reduced semiconductor voltage stress, continuous input current, and high efficiency. The paper details the converter's operational principles, steady-state analysis, design considerations, and theoretical efficiency analysis, highlighting its superiority over existing converters. Simulation and experimental results show exceptional efficiency, achieving 97.2% in simulations and 98% in hardware tests for a 0.7 kW system with a 35 V DC input from solar photovoltaic (SPV). The proposed system demonstrates rapid dynamics, robustness to load impedance variations, and effective voltage control without additional gain tuning. This research offers a transformative solution, enhancing EV charging efficiency and supporting sustainable transportation infrastructure through renewable energy integration.