设计基于冗余的级联双向 DC-DC 转换器以提高储能设备的可靠性

IF 5.2 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Open Journal of the Industrial Electronics Society Pub Date : 2024-08-21 DOI:10.1109/OJIES.2024.3446911

Thales Augusto Fagundes;Guilherme Henrique Favaro Fuzato;Rafael Fernando Quirino Magossi;Ana Laís Rui Oliveira;Ricardo Quadros Machado

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引用次数: 0

摘要

本文提出了一种基于冗余的级联双向直流/直流转换器，设计用于连接电池储能系统（BESS）单元。采用这种拓扑结构后，由于功率转换具有冗余性，其可靠性得到了提高，这与由直流/直流转换器组成的传统结构不同，后者在发生故障时无法处理功率流。因此，该拓扑将级联双向 Boost 转换器和级联双向 Cuk 转换器合并在一起。随后，根据开关模式，考虑到所有可行（不同）的子电路，可以轻松计算出所提议拓扑结构的耦合数学模型。因此，小信号分析被应用于 PI 控制器的设计，随后使用无穷大规范和稳定性分析进行闭环性能评估，以评估直流/直流转换器在不同负载值和电流参考值下的闭环运行情况。最后，一个实验室规模的原型和一个硬件在环设置证明了直流/直流转换器在各种情况下工作的有效性，以及与传统的基于 SoC 的下垂器一起平衡 BESS 单元的运行情况。

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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A Design of a Redundancy-Based Cascaded Bidirectional DC–DC Converter for Improved Reliability in Energy Storage Devices

This article proposes a redundancy-based cascaded bidirectional dc/dc converter designed to interface battery energy storage system (BESS) units. With the employment of this topology, its reliability is increased due to redundancy in power conversion, which differs from conventional structures formed by dc/dc converters that cannot process power flow when a fault occurs. Thus, the topology is provided merging the cascaded bidirectional Boost converter and cascaded bidirectional Cuk converter. Subsequently, the coupled mathematical model of the proposed topology can be readily calculated, considering all feasible (different) subcircuits according to the switching pattern. Therefore, small-signal analysis is applied to design the PI controllers, followed by a closed-loop performance evaluation using an infinity norm and stability analysis to assess the operation of the dc/dc converter in closed loop for different values of load and current references. Finally, a lab-scale prototype and a hardware-in-the-loop setup prove the effectiveness of the dc/dc converter working in various scenarios and also operating with the traditional SoC-based droop for balancing the BESS units.

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来源期刊

IEEE Open Journal of the Industrial Electronics Society ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

10.80

自引率

2.40%

发文量

审稿时长

12 weeks

期刊介绍： The IEEE Open Journal of the Industrial Electronics Society is dedicated to advancing information-intensive, knowledge-based automation, and digitalization, aiming to enhance various industrial and infrastructural ecosystems including energy, mobility, health, and home/building infrastructure. Encompassing a range of techniques leveraging data and information acquisition, analysis, manipulation, and distribution, the journal strives to achieve greater flexibility, efficiency, effectiveness, reliability, and security within digitalized and networked environments. Our scope provides a platform for discourse and dissemination of the latest developments in numerous research and innovation areas. These include electrical components and systems, smart grids, industrial cyber-physical systems, motion control, robotics and mechatronics, sensors and actuators, factory and building communication and automation, industrial digitalization, flexible and reconfigurable manufacturing, assistant systems, industrial applications of artificial intelligence and data science, as well as the implementation of machine learning, artificial neural networks, and fuzzy logic. Additionally, we explore human factors in digitalized and networked ecosystems. Join us in exploring and shaping the future of industrial electronics and digitalization.