Performance study of a Vanadium Redox Flow Battery (VRB) for use in green data centers

2015 IEEE International Telecommunications Energy Conference (INTELEC) Pub Date : 2015-10-01 DOI:10.1109/INTLEC.2015.7572368

R. Badrinarayanan, Zhang Yu, K. Tseng

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引用次数: 2

Abstract

This paper analyses the parameter dependence during the charging process of a Vanadium Redox Flow Battery (VRB) for a system-aware green data center which has distributed sources of energy production and amenable to flexible load scheduling. One of the key features of a flow battery is the ability to control the flow rate and current during the charging process. The flexibility however has a direct effect on charging time and efficiency which calls for a detailed performance study with various modes of charging. An electrical model of a kW scale VRB having an operating SOC range of 15-85% is presented. The presented model considers a 15 cell battery with current range of 80-160 mA/cm-2, overall membrane area of 780 cm2 and a flow rate range of 2-6 L/min. The results obtained show that there is a trade-off between the charging time and the energy capacity depending on the charging current and the flow rate. This work would aid the process of charging optimization by selecting various modes of operation of VRB, depending on the weightage given by the system for charging time or the energy efficiency.

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用于绿色数据中心的钒氧化还原液流电池(VRB)性能研究

本文分析了分布式能源、灵活负荷调度的系统感知绿色数据中心中钒氧化还原液流电池充电过程中的参数依赖关系。液流电池的关键特征之一是在充电过程中能够控制流量和电流。然而，充电的灵活性对充电时间和效率有直接的影响，需要对各种充电方式的性能进行详细的研究。提出了一种工作荷电范围为15-85%的kW级VRB电学模型。该模型考虑15节电池，电流范围为80-160 mA/cm-2，总膜面积为780 cm2，流速范围为2-6 L/min。结果表明，充电时间与能量容量之间存在一定的权衡关系，这取决于充电电流和充电流量。根据系统对充电时间或能源效率的权重，选择VRB的各种运行模式，有助于优化充电过程。

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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2015 IEEE International Telecommunications Energy Conference (INTELEC)

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