期刊
JOURNAL OF POWER SOURCES
卷 396, 期 -, 页码 506-518出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2018.06.017
关键词
Vanadium Rredox Flow Battery (VRFB); Electrical equivalent circuit model; Dynamic internal parameter extraction; Aging factor; Flow rate optimization; Renewable energy integration
资金
- Ministry of New and Renewable Energy (MNRE) Govt. of India [31/40/2010/11/ PVSE]
- IIEST, India
- INSPIRE Faculty award
In this work it is established for the first time that the internal parameters of the electrical equivalent circuit of vanadium redox flow battery (VRFB) are variable not only with flow rate and stack current but also the state of charge (SOC) and operational cycle number. The dynamic internal circuit parameters are extracted by using the charge-discharge characteristics of a practical 1 kW 6 h VRFB system as input to the proposed model. The role of temperature on the VRFB internal parameters is also discussed. It is further demonstrated that the average error in estimation of VRFB stack voltage using dynamic parameters reduces by 28% (charging) and 14% (discharging) compared to that of using static internal parameters. The proposed model exhibits robustness and validity for large scale applications as evidenced by further extracting the internal parameters of a 125 kW 2h VRFB system. Another significant contribution of this paper is the optimization of flow rate by considering both the stack internal power loss and pump power loss simultaneously to achieve optimal performance of the VRFB system. The proposed model involving dynamic parameter extraction and loss optimization is very useful for designing suitable battery management system (BMS) for interfacing VRFB with renewable energy sources.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据