Dynamic Evaluation-Based Real-Time Coordinated Control Method for Multi-Stack Fuel Cell System Considering Lifetime Consistency

IF 2.6 4区 工程技术 Q3 ENERGY & FUELS
Ying Han, Weifeng Meng, Luoyi Li, Huiwen Deng, Xiangwen Zhan, Weirong Chen
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引用次数: 0

Abstract

With the global energy shortage and excessive carbon emissions, hydrogen energy has received significant attention as a key component of a carbon-neutral future, with fuel cells serving as a key component for hydrogen-to-power conversion. In high-powered applications like rail transportation and buildings, the multi-stack fuel cell system (MFCS) offers superior performance compared to a single-stack fuel cells system, providing advantages such as higher efficiency, stronger robustness, and longer lifetime. However, the efficiency, lifetime, and economy of MFCS are limited by the power distribution and performance of single-stack fuel cell, and the strong coupling between the performance of single-stack fuel cells and their actual power and voltage in real-time operation makes the energy management method of MFCS extremely complicated. The traditional strategies struggle to balance the various indexes in the MFCS and are limited in optimising individual indexes. To tackle this issue, this paper proposes a dynamic evaluation-based real-time coordinated control method for MFCS considering lifetime consistency. First, to comprehensively consider various indexes of the MFCS, a dynamic evaluation matrix (DEM) of the MFCS is established. The DEM consists of two essential components: the first is the dynamic performance evaluation matrix (DPEM), which thoroughly considers the impact of the performance variations in each single-stack fuel cell on the MFCS; and the other is the evaluation matrix pertaining to the efficiency, lifetime, and economy of the MFCS, which builds upon the DPEM and fully balances the mutual influences among the indexes. Then the objective function is established according to the DEM, and the GSSA algorithm is used for real-time optimisation. To demonstrate its effectiveness and advantages, the proposed method is applied in a hardware-in-the-loop (HIL) simulation system based on RT-LAB. The findings demonstrate that the proposed method facilitates comprehensiveoptimisation of the MFCS across efficiency, lifespan, and economic considerations. Furthermore, it realises the uniform lifetimes of each PEMFC and enhances the overall utilisation of the MFCS.

Abstract Image

考虑寿命一致性的多堆燃料电池系统动态评估实时协调控制方法
随着全球能源短缺和碳排放过剩,氢能源作为碳中和未来的关键组成部分受到了极大的关注,燃料电池是氢到电转换的关键组成部分。在铁路运输和建筑等大功率应用中,与单堆燃料电池系统相比,多堆燃料电池系统(MFCS)具有更高的效率、更强的稳健性和更长的使用寿命等优势。然而,单堆燃料电池的功率分布和性能限制了MFCS的效率、寿命和经济性,并且单堆燃料电池的性能与实时运行时的实际功率和电压之间的强耦合使得MFCS的能量管理方法极其复杂。传统的策略很难平衡MFCS中的各种指标,并且在优化单个指标方面受到限制。针对这一问题,提出了一种考虑寿命一致性的基于动态评估的MFCS实时协调控制方法。首先,综合考虑MFCS的各项指标,建立MFCS的动态评价矩阵(DEM)。DEM由两个基本组成部分组成:第一部分是动态性能评估矩阵(DPEM),该矩阵全面考虑了单个燃料电池性能变化对MFCS的影响;另一个是MFCS的效率、寿命和经济性评价矩阵,该矩阵以DPEM为基础,充分平衡了各指标之间的相互影响。然后根据DEM建立目标函数,利用GSSA算法进行实时优化。为验证该方法的有效性和优越性,将该方法应用于基于RT-LAB的硬件在环仿真系统。研究结果表明,所提出的方法促进了MFCS在效率、寿命和经济方面的综合优化。此外,它实现了每个PEMFC的统一寿命,提高了MFCS的整体利用率。
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来源期刊
IET Renewable Power Generation
IET Renewable Power Generation 工程技术-工程:电子与电气
CiteScore
6.80
自引率
11.50%
发文量
268
审稿时长
6.6 months
期刊介绍: IET Renewable Power Generation (RPG) brings together the topics of renewable energy technology, power generation and systems integration, with techno-economic issues. All renewable energy generation technologies are within the scope of the journal. Specific technology areas covered by the journal include: Wind power technology and systems Photovoltaics Solar thermal power generation Geothermal energy Fuel cells Wave power Marine current energy Biomass conversion and power generation What differentiates RPG from technology specific journals is a concern with power generation and how the characteristics of the different renewable sources affect electrical power conversion, including power electronic design, integration in to power systems, and techno-economic issues. Other technologies that have a direct role in sustainable power generation such as fuel cells and energy storage are also covered, as are system control approaches such as demand side management, which facilitate the integration of renewable sources into power systems, both large and small. The journal provides a forum for the presentation of new research, development and applications of renewable power generation. Demonstrations and experimentally based research are particularly valued, and modelling studies should as far as possible be validated so as to give confidence that the models are representative of real-world behavior. Research that explores issues where the characteristics of the renewable energy source and their control impact on the power conversion is welcome. Papers covering the wider areas of power system control and operation, including scheduling and protection that are central to the challenge of renewable power integration are particularly encouraged. The journal is technology focused covering design, demonstration, modelling and analysis, but papers covering techno-economic issues are also of interest. Papers presenting new modelling and theory are welcome but this must be relevant to real power systems and power generation. Most papers are expected to include significant novelty of approach or application that has general applicability, and where appropriate include experimental results. Critical reviews of relevant topics are also invited and these would be expected to be comprehensive and fully referenced. Current Special Issue. Call for papers: Power Quality and Protection in Renewable Energy Systems and Microgrids - https://digital-library.theiet.org/files/IET_RPG_CFP_PQPRESM.pdf Energy and Rail/Road Transportation Integrated Development - https://digital-library.theiet.org/files/IET_RPG_CFP_ERTID.pdf
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