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<p>Modern photovoltaic (PV) systems face challenges due to limited installation space, requiring high-gain DC–DC converters to meet load or grid voltage requirements. Conventional solutions often use bulky transformers or complex converters with many components, reducing efficiency. This paper proposes an improved high-gain DC–DC converter, iSLVMC-CG, combining a switched inductor (SL) and voltage multiplier cell (VMC) with a common ground, achieving high voltage gain at moderate duty ratio using a single active switch. The proposed topology offers reduced voltage stress on switches and diodes, continuous input current suitable for PV applications, compact size, and enhanced efficiency. A comprehensive analysis in both CCM and DCM operation is performed, including component design, small-signal modeling, parasitic effect evaluation, and PI controller implementation. Thermal and reliability analyses based on MIL-HDBK-217F standards assess long-term durability. MATLAB/Simulink simulation and hardware prototype validation confirm high efficiency (92%), elevated power density (2.03-<InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(~\text {W/cm}^3\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mspace width="3.33333pt" /> <msup> <mtext>W/cm</mtext> <mn>3</mn> </msup> </mrow> </math></EquationSource> </InlineEquation>), and stable voltage regulation. The results demonstrate the practical applicability, robustness, and reliability of the proposed iSLVMC-CG converter for renewable energy and electric mobility systems.</p>

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High-voltage gain non-isolated switched-inductor boost converter with voltage multiplier for photovoltaic system

  • 期刊论文

  • 发表日期：

    2026年4月7日

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  • Lakshman Kumar Dangeti,
  • Amritesh Kumar

摘要

Modern photovoltaic (PV) systems face challenges due to limited installation space, requiring high-gain DC–DC converters to meet load or grid voltage requirements. Conventional solutions often use bulky transformers or complex converters with many components, reducing efficiency. This paper proposes an improved high-gain DC–DC converter, iSLVMC-CG, combining a switched inductor (SL) and voltage multiplier cell (VMC) with a common ground, achieving high voltage gain at moderate duty ratio using a single active switch. The proposed topology offers reduced voltage stress on switches and diodes, continuous input current suitable for PV applications, compact size, and enhanced efficiency. A comprehensive analysis in both CCM and DCM operation is performed, including component design, small-signal modeling, parasitic effect evaluation, and PI controller implementation. Thermal and reliability analyses based on MIL-HDBK-217F standards assess long-term durability. MATLAB/Simulink simulation and hardware prototype validation confirm high efficiency (92%), elevated power density (2.03- \(~\text {W/cm}^3\) W/cm 3 ), and stable voltage regulation. The results demonstrate the practical applicability, robustness, and reliability of the proposed iSLVMC-CG converter for renewable energy and electric mobility systems.