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<p>This paper proposes a quadratic high-voltage gain switched-capacitor-based topology is proposed for renewable energy sources, energy storage, DC microgrid, and EV charging applications. The proposed converter utilizes a switched-capacitor network in its structure to enhance the converter’s voltage gain. The proposed topology presents a single switch, a simple switch control circuit, with low component count, a simple circuit, high gain, low stress on devices, low ripple, common grounding, wide voltage-gain range, and high efficiency. Also, the proposed converter QHVGSC topology is analyzed in steady-state and ideal conditions. The proposed converter operations are analyzed in two different modes, continuous conduction mode. Whereas the non-ideality shows the impact of equivalent series resistance on the converter performance, and state space analysis is done to design the controller; moreover, the Bode plot along with state space analysis is carried out so that the QHVGSC stability and controller design validate the transfer function. This topology is designed with an operating range of 200&#xa0;V, 50–400&#xa0;W, and a switching frequency of 20&#xa0;kHz. Finally, the complete module of the proposed QHVGSC is verified with the help of the dSPACE1104 controller and the efficiency is 95.02% obtained at 200 W with improved dynamic response.</p>

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A quadratic high-voltage gain switched-capacitor improved dynamic response DC–DC step-up converter for renewable energy applications

  • 期刊论文

  • 发表日期：

    2026年4月1日

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  • Miteshkumar Bharatbhai Patel,
  • Nakka Jayaram,
  • Gaurav

摘要

This paper proposes a quadratic high-voltage gain switched-capacitor-based topology is proposed for renewable energy sources, energy storage, DC microgrid, and EV charging applications. The proposed converter utilizes a switched-capacitor network in its structure to enhance the converter’s voltage gain. The proposed topology presents a single switch, a simple switch control circuit, with low component count, a simple circuit, high gain, low stress on devices, low ripple, common grounding, wide voltage-gain range, and high efficiency. Also, the proposed converter QHVGSC topology is analyzed in steady-state and ideal conditions. The proposed converter operations are analyzed in two different modes, continuous conduction mode. Whereas the non-ideality shows the impact of equivalent series resistance on the converter performance, and state space analysis is done to design the controller; moreover, the Bode plot along with state space analysis is carried out so that the QHVGSC stability and controller design validate the transfer function. This topology is designed with an operating range of 200 V, 50–400 W, and a switching frequency of 20 kHz. Finally, the complete module of the proposed QHVGSC is verified with the help of the dSPACE1104 controller and the efficiency is 95.02% obtained at 200 W with improved dynamic response.