A Lightweight Design on Mobile Power Supply with Fuel Cell Energy Storage Based on Modular Multilevel Converter

2023 International Conference on Power Energy Systems and Applications (ICoPESA) Pub Date : 2023-02-24 DOI:10.1109/ICoPESA56898.2023.10141396

Guanglin Sha, Yao Zhang, Jian Gao, Yunzhao Wu, Xiaofan Guo

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Abstract

In this paper, a MMC based fuel cell (FC) system (MMC-FCs) is proposed for mobile power supply. The synchronous switch modulation based on high-frequency link (HFL) can realize the voltage control of DC bus of interconnected full-bridge. It also helps to suppress the fundamental and 2ndorder-frequency ripple current of the sub-module (SM), thus greatly reducing the size of the SM capacitor, so as to realize the lightweight of the system. The fuel cell system uses partial power control to regulate the output energy, which reduces the power and power loss of fuel cell conversion. In this paper, the topology of MMC-FCs, the principle of SM ripple current cancellation, the partial power conversion (PPC) mechanism of FC, the parameters of SM capacitance and FC partial power conversion are analyzed. The lightweight effect of the system is evaluated from the perspective of system volume. Finally, simulation and experimental results verify the effectiveness of the scheme.

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基于模块化多电平变换器的燃料电池储能移动电源轻量化设计

提出了一种基于MMC的移动电源燃料电池(FC)系统。基于高频链路的同步开关调制可以实现互联全桥直流母线的电压控制。它还有助于抑制子模块(SM)的基频和次频纹波电流，从而大大减小SM电容的尺寸，从而实现系统的轻量化。燃料电池系统采用部分功率控制来调节输出能量，减少了燃料电池转换的功率和功率损耗。本文分析了mmc -FC的拓扑结构、SM纹波电流抵消原理、FC的部分功率转换(PPC)机理、SM电容参数和FC部分功率转换参数。从系统体积的角度来评价系统的轻量化效果。最后，仿真和实验结果验证了该方案的有效性。

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

2023 International Conference on Power Energy Systems and Applications (ICoPESA)

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