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<p>A common grounded voltage booster converter is introduced for fuel cell powered electric vehicles. The designed non-isolated structure employs an improved quadratic boost topology and a switched capacitor-based voltage lift network. It has a very high voltage boosting capability and provides ten times the applied input voltage at a very low duty ratio of 0.4. Beyond this, it has other key features such as low voltage stresses with a minimal component count, utilization of shared grounding between the source and load side, a continual source current that renders it ideal for interfacing the low voltage DC supply with the high voltage motor drive of electric vehicles. In addition, simultaneous switching makes the control circuit simpler. Working concepts of the designed topology are clearly elaborated in continuous, discontinuous, and boundary modes of operation. The effects of non-ideal components, power losses, and thermal stresses are also analyzed. Simulation outcomes are obtained from a MATLAB/Simulink platform. Theoretical analyses are validated through the built hardware model (240&#xa0;V/200&#xa0;W). Performance of the suggested structure is found to be superior when compared with various prevailing topologies.</p>

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DC voltage booster with common ground for fuel cell electric vehicles

  • 期刊论文

  • 发表日期：

    2026年5月20日

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  • Therese Reena Smiline Edward,
  • Jaya Christa Sargunar Thomas,
  • Gnanavadivel Jothimani

摘要

A common grounded voltage booster converter is introduced for fuel cell powered electric vehicles. The designed non-isolated structure employs an improved quadratic boost topology and a switched capacitor-based voltage lift network. It has a very high voltage boosting capability and provides ten times the applied input voltage at a very low duty ratio of 0.4. Beyond this, it has other key features such as low voltage stresses with a minimal component count, utilization of shared grounding between the source and load side, a continual source current that renders it ideal for interfacing the low voltage DC supply with the high voltage motor drive of electric vehicles. In addition, simultaneous switching makes the control circuit simpler. Working concepts of the designed topology are clearly elaborated in continuous, discontinuous, and boundary modes of operation. The effects of non-ideal components, power losses, and thermal stresses are also analyzed. Simulation outcomes are obtained from a MATLAB/Simulink platform. Theoretical analyses are validated through the built hardware model (240 V/200 W). Performance of the suggested structure is found to be superior when compared with various prevailing topologies.