High gain bipolar converter with reduced input current ripple for fuel cell integrated DC microgrid

IF 1.8 3区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Circuit Theory and Applications Pub Date : 2024-07-19 DOI:10.1002/cta.4174

Ashish Prajapati, Kalpana Chaudhary

引用次数: 0

Abstract

The key characteristics of a DC‐DC converter for a fuel cell (FC) application include higher voltage gain for DC‐link voltage, the continuous and ripple‐free source current that is beneficial for FC. This paper proposes a high‐gain DC‐DC converter with continuous and ripple‐free input current. The proposed converter is suitable for integrating fuel cell and photovoltaic (PV) power into an isolated DC microgrid. Modified boost converter with an intermediate capacitor integrated with the cuk converter to achieve high voltage gain and low voltage stress across switches, which also reduces the reverse recovery problem of diodes. A prototype of a 1 kW converter is designed, developed, and analyzed to verify its working principle. The simulation and experimental results for high gain 40/400 V and 1 kW load power, with a DC microgrid of 400 V connected to the proposed converter, are in good harmony and are conforming to the theoretical analysis. The maximum obtained converter efficiency is 96.13%.

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用于燃料电池集成直流微电网的高增益双极转换器，可降低输入电流纹波

用于燃料电池（FC）应用的直流-直流转换器的主要特点包括直流链路电压的较高电压增益、有利于燃料电池的连续且无纹波的源电流。本文提出了一种输入电流连续且无纹波的高增益直流-直流转换器。该转换器适用于将燃料电池和光伏（PV）电源集成到隔离的直流微电网中。改进型升压转换器与 cuk 转换器集成了一个中间电容器，可实现高电压增益和低开关电压应力，还可减少二极管的反向恢复问题。为验证其工作原理，设计、开发并分析了 1 千瓦转换器的原型。高增益 40/400 V 和 1 kW 负载功率的仿真和实验结果与理论分析相吻合。转换器的最高效率为 96.13%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Circuit Theory and Applications 工程技术-工程：电子与电气

CiteScore

3.60

自引率

34.80%

发文量

277

审稿时长

4.5 months

期刊介绍： The scope of the Journal comprises all aspects of the theory and design of analog and digital circuits together with the application of the ideas and techniques of circuit theory in other fields of science and engineering. Examples of the areas covered include: Fundamental Circuit Theory together with its mathematical and computational aspects; Circuit modeling of devices; Synthesis and design of filters and active circuits; Neural networks; Nonlinear and chaotic circuits; Signal processing and VLSI; Distributed, switched and digital circuits; Power electronics; Solid state devices. Contributions to CAD and simulation are welcome.