A Non-isolated Quadratic High-Gain DC–DC Converter for Smart High-Intensity Lighting Systems in Multimedia and Intelligent Environments
محورهای موضوعی : پردازش چند رسانه ای، سیستمهای ارتباطی، سیستمهای هوشمندManoochehr Gorji 1 , Sahar Gozalkhoo 2 , Mohsen Hamzeh 3 * , Ahmad Salem Nia 4
1 - Department of Engineering, University of Tehran, Tehran, Iran
2 - Department of Electrical Engineering, Shahid Beheshti University, Tehran, Iran
3 - Department of Engineering, University of Tehran, Tehran, Iran
4 - Department of Electrical Engineering, Shahid Beheshti University, Tehran, Iran
کلید واژه: مبدل DC-DC , بهره بالا, غیرایزوله, سلول افزاینده ولتاژ,
چکیده مقاله :
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This paper introduces a novel non-isolated high step-up DC-DC converter topology that employs a dual-stage boost structure combined with diode–inductor voltage multiplier cells. By leveraging a quadratic boost mechanism, the converter achieves significant voltage amplification at moderate duty cycles, thereby enhancing overall efficiency and ensuring improved operational stability under various loading conditions. A primary advantage of the proposed topology lies in its capability to reduce voltage stress on semiconductor components, which not only prolongs device lifespan but also minimizes switching losses and thermal stress during operation. The incorporation of two coupled inductors ensures continuous input current, effectively reducing electromagnetic interference (EMI) and input current ripple, which contributes to stable performance and improved power quality. In addition to delivering high power density, the proposed converter offers a lightweight and cost-effective solution suitable for modern power-electronic applications. The shared common ground between the source and the load further simplifies its integration into practical systems, facilitating safer implementation. The voltage ratio of the proposed converter has been extracted for both ideal and non-ideal operating modes to provide a clearer understanding of its behaviour. Moreover, the practical voltage ratio of the converter has been obtained, analyzed, and compared with the result derived from the non-ideal voltage-gain relationship. Finally, the simulation results have been detailed and compared with the corresponding experimental results to validate the theoretical analysis. The PLECS software is the simulation engine used in this study to verify the performance of the proposed topology. |
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This paper introduces a novel non-isolated high step-up DC-DC converter topology that employs a dual-stage boost structure combined with diode–inductor voltage multiplier cells. By leveraging a quadratic boost mechanism, the converter achieves significant voltage amplification at moderate duty cycles, thereby enhancing overall efficiency and ensuring improved operational stability under various loading conditions. A primary advantage of the proposed topology lies in its capability to reduce voltage stress on semiconductor components, which not only prolongs device lifespan but also minimizes switching losses and thermal stress during operation. The incorporation of two coupled inductors ensures continuous input current, effectively reducing electromagnetic interference (EMI) and input current ripple, which contributes to stable performance and improved power quality. In addition to delivering high power density, the proposed converter offers a lightweight and cost-effective solution suitable for modern power-electronic applications. The shared common ground between the source and the load further simplifies its integration into practical systems, facilitating safer implementation. The voltage ratio of the proposed converter has been extracted for both ideal and non-ideal operating modes to provide a clearer understanding of its behaviour. Moreover, the practical voltage ratio of the converter has been obtained, analyzed, and compared with the result derived from the non-ideal voltage-gain relationship. Finally, the simulation results have been detailed and compared with the corresponding experimental results to validate the theoretical analysis. The PLECS software is the simulation engine used in this study to verify the performance of the proposed topology. |
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