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<p>This paper presents a novel enhanced quadratic DC-DC boost converter (EQDBC) with ultra-high-voltage gain achieved through a switched-capacitor cell (SCC) topology. Unlike conventional designs, the EQDBC eliminates the need for voltage doublers, reducing component count and enhancing reliability. It minimizes voltage stress on capacitors, diodes, and semiconductor switches while providing high-voltage gain at low duty cycles. Key features include Continuous Input Current (CIS) and input-to-output ground sharing, crucial for Electric Vehicle battery charging applications. Additionally, the research pioneers the EQDBC Power Factor Enhancement Converter (EQDBPFEC) integrated with an optimized Proportional–Integral–Derivative System (PIDS). This system ensures precise voltage regulation, improved stability, and superior power quality (PQ) at the input interface, addressing traditional AC-DC converter challenges. The EQDBPFEC offers rapid rise times and minimal overshoot, ensuring unmatched dynamic performance. The converter's performance is rigorously modeled and benchmarked against existing alternatives using MATLAB/Simulink. A comprehensive analysis of a 1.25&#xa0;kW EQDBC under closed-loop control across varying input voltages and load conditions demonstrates robust and stable operation amidst abrupt changes. Experimental validation with 1.25&#xa0;kW hardware prototypes confirms exceptional transient response and PQ metrics, achieving near-unity power factor and total harmonic distortion (THD) as low as 1.16% and 1.15%. Efficiency rates of 96% and 96.5% further underscore its effectiveness. This study advances power conversion technology, providing a crucial reference for developing resilient control systems, ensuring precise regulation and high-power quality in diverse applications.</p>

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Enhanced quadratic DC-DC boost converter with integrated power factor enhancement: advancing high-voltage gain and power quality in electric vehicle charging

  • 期刊论文

  • 发表日期：

    2025年4月29日

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  • A. Jeyaraj,
  • K. S. Saji

摘要

This paper presents a novel enhanced quadratic DC-DC boost converter (EQDBC) with ultra-high-voltage gain achieved through a switched-capacitor cell (SCC) topology. Unlike conventional designs, the EQDBC eliminates the need for voltage doublers, reducing component count and enhancing reliability. It minimizes voltage stress on capacitors, diodes, and semiconductor switches while providing high-voltage gain at low duty cycles. Key features include Continuous Input Current (CIS) and input-to-output ground sharing, crucial for Electric Vehicle battery charging applications. Additionally, the research pioneers the EQDBC Power Factor Enhancement Converter (EQDBPFEC) integrated with an optimized Proportional–Integral–Derivative System (PIDS). This system ensures precise voltage regulation, improved stability, and superior power quality (PQ) at the input interface, addressing traditional AC-DC converter challenges. The EQDBPFEC offers rapid rise times and minimal overshoot, ensuring unmatched dynamic performance. The converter's performance is rigorously modeled and benchmarked against existing alternatives using MATLAB/Simulink. A comprehensive analysis of a 1.25 kW EQDBC under closed-loop control across varying input voltages and load conditions demonstrates robust and stable operation amidst abrupt changes. Experimental validation with 1.25 kW hardware prototypes confirms exceptional transient response and PQ metrics, achieving near-unity power factor and total harmonic distortion (THD) as low as 1.16% and 1.15%. Efficiency rates of 96% and 96.5% further underscore its effectiveness. This study advances power conversion technology, providing a crucial reference for developing resilient control systems, ensuring precise regulation and high-power quality in diverse applications.