Hosseinpour Majid, Seifi Elham, Seifi Ali, Sajedi Shahab
Department of Electrical Engineering, University of Mohaghegh Ardabili, Ardabil, Iran.
School of Electrical and Electronic Engineering, University College Dublin, Dublin, Ireland.
Sci Rep. 2025 Jul 19;15(1):26284. doi: 10.1038/s41598-025-12219-9.
This article proposes an interleaved DC-DC boost architecture with a voltage multiplier rectifier circuit to achieve superior performance. The design methodology and operational characteristics of the converter are examined for two defined duty cycle intervals: Area 1 (0 < D < 1) and Area 2 (0.5 ≤ D < 1). With its flexible functionality, the converter proves suitable for a wide range of applications, including energy storage platforms, electric transportation, and renewable energy technologies. The suggested converter has two essential levels: an interleaved boost level and a voltage multiplier rectifier (VMR) circuit. The interleaved boost level functions as a two-phase boost converter, converting the input DC voltage into a high-frequency AC square wave to enable efficient filtering with small capacitors. The VMR phase then converts the AC waveform to produce a high DC output voltage. The proposed converter delivers high voltage gain with reduced input ripple through interleaved operation, which improves electromagnetic interference (EMI) performance and extends the source's lifespan. Its transformerless design, combined with a voltage multiplier, minimizes both size and cost while maintaining high efficiency. Additionally, the low stress on switches allows for the use of more affordable components, making it an ideal solution for renewable energy and DC microgrid applications. This study examines the operational states of the converter, its steady-state behavior, Voltage gain characteristics across idealized and non-ideal conditions, power losses, and efficiency metrics. Under 100 W output power conditions, the suggested converter demonstrates a maximum efficiency of 96%. To validate the accuracy of the theoretical analysis and simulation results, the converter is subjected to simulations for a voltage conversion from 25 V to 270.5 V, which leads to the development of a laboratory prototype for empirical validation. The results of the simulation and experimental tests confirm the accuracy and reliability of the suggested interleaved boost converter's performance.
本文提出了一种带有倍压整流电路的交错式DC-DC升压架构，以实现卓越的性能。针对两个定义的占空比区间：区域1（0 < D < 1）和区域2（0.5 ≤ D < 1），研究了该转换器的设计方法和运行特性。凭借其灵活的功能，该转换器适用于广泛的应用，包括储能平台、电动运输和可再生能源技术。所建议的转换器有两个基本层级：交错式升压层级和倍压整流（VMR）电路。交错式升压层级用作两相升压转换器，将输入直流电压转换为高频交流方波，以便用小电容进行高效滤波。然后VMR阶段将交流波形转换以产生高直流输出电压。所提出的转换器通过交错运行实现了高电压增益并降低了输入纹波，这改善了电磁干扰（EMI）性能并延长了电源的使用寿命。其无变压器设计与倍压器相结合，在保持高效率的同时将尺寸和成本降至最低。此外，开关上的低应力允许使用更经济实惠的组件，使其成为可再生能源和直流微电网应用的理想解决方案。本研究考察了转换器的运行状态、其稳态行为、理想化和非理想条件下的电压增益特性、功率损耗和效率指标。在100W输出功率条件下，所建议的转换器展示出96%的最高效率。为了验证理论分析和仿真结果的准确性，对该转换器进行了从25V到270.5V电压转换的仿真，这促成了用于实证验证的实验室原型的开发。仿真和实验测试结果证实了所建议的交错式升压转换器性能的准确性和可靠性。
