A New Wide Range and High Voltage Conversion Bidirectional DC/DC Converter for DC Microgrid

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

International Journal of Circuit Theory and Applications Pub Date : 2024-10-08 DOI:10.1002/cta.4273

Dhivya Panneerselvam, Kodumur Meesala Ravi Eswar

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引用次数: 0

Abstract

Bidirectional DC/DC converters (BDCs) are crucial in energy storage integration with DC microgrid. In this article, a new wide-range and high voltage conversion (VC) nonisolated BDC with simple structure having reasonable components (total 13) is proposed. The proposed BDC with symmetrical VC ratio delivers high conversion of voltage within the vicinity of 0.5 duty ratio in both boost and buck modes of operation. In addition, the proposed BDC has features of continuous currents at low and high voltage stages and reduced switch voltage stress. This article presents the proposed BDC with circuit configuration and its detailed steady-state boost and buck mode analyses to verify achievable VC ratio and design consideration. With the designed practical model of the proposed BDC, loss analysis is exhibited to verify the conversion efficiency in boost and buck modes of operation. In real time, experimental prototype of the proposed BDC is operated with LAUNCHXL-F28379D kit to realize switching pulse generation. The experimental response of the entire proposed BDC operation is captured at 200 W loading. The attained experimental results and discussions validate the proposed BDC operation with the mentioned features. Finally, a comparative analysis with existing BDCs is performed to prove the competence of the proposed BDC for DC microgrid.

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用于直流微电网的新型宽量程高压双向DC/DC变换器

双向DC/DC变换器（bdc）是实现储能与直流微电网集成的关键器件。本文提出了一种结构简单、元器件合理（共13个）的新型宽量程高压转换（VC）非隔离式直流电源。所提出的具有对称VC比的BDC在升压和降压工作模式下都能在0.5占空比附近提供高电压转换。此外，所提出的BDC具有低压级和高压级电流连续的特点，减小了开关电压应力。本文介绍了所提出的BDC电路结构，并对其进行了详细的稳态升压和降压模式分析，以验证可实现的VC比和设计考虑。利用所设计的BDC实用模型，通过损耗分析验证了升压和降压两种工作模式下的转换效率。利用LAUNCHXL-F28379D套件实时运行BDC实验样机，实现开关脉冲的产生。在200w负载下捕获了整个BDC操作的实验响应。实验结果和讨论验证了所提出的具有上述特征的BDC操作。最后，通过与现有BDC的对比分析，验证了所提出的BDC在直流微电网中的适用性。

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.