Single‐stage single‐phase multiport DC–AC inverter suitable for standalone applications due to its notable performance in different operation modes

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

International Journal of Circuit Theory and Applications Pub Date : 2024-08-07 DOI:10.1002/cta.4201

Sina Ahmadian, Vahid Abbasi, Siroos Hemmati

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引用次数: 0

Abstract

A new multiport DC–AC converter is proposed for standalone and off‐grid tied applications. The configuration converts power from DC to AC form in a single stage with suitable voltage gain. To increase the certainty of supporting power, the converter is designed to operate in four modes, including battery‐alone mode. The other advantage of the presented work is supplying the output power during unbalanced voltage conditions of the input ports. The advanced features of the converter for being used in standalone applications are related to the suitable placement and structure of the bidirectional port. In addition, the configuration is designed in a way to contain appropriate structural properties such as the existence of a common ground between the DC section and inverter, continuity of input currents, configured by an acceptable number of components, and low‐voltage stress on the DC–DC section's switches. Furthermore, it has an impedance network to protect the inverter's switches in a shoot‐through state. To confirm the converter advantages from the mentioned points of view, it has been compared with similar configurations. A prototype rated at 110 V is prepared to demonstrate the advantages of the converter performance per different conditions. The results of the steady‐state and transient experiments validate the suitability of the presented converter.

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单级单相多端口直流-交流逆变器在不同运行模式下性能卓越，适合独立应用

针对独立和离网并网应用，提出了一种新型多端口直流-交流转换器。该配置通过单级适当的电压增益将直流电转换为交流电。为了提高支持功率的确定性，该转换器设计为四种工作模式，包括电池独立模式。这项工作的另一个优势是在输入端口电压不平衡的情况下提供输出功率。该转换器可用于独立应用的先进功能与双向端口的适当位置和结构有关。此外，该配置的设计还包含适当的结构特性，如直流部分和逆变器之间的公共接地、输入电流的连续性、可接受的元件配置数量以及直流-直流部分开关的低压应力。此外，它还有一个阻抗网络，可在击穿状态下保护逆变器开关。为了从上述角度证实变流器的优势，我们将其与类似的配置进行了比较。我们制作了一个额定电压为 110 V 的原型，以展示变流器在不同条件下的性能优势。稳态和瞬态实验结果验证了该转换器的适用性。

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.