Analysis of battery lifetime extension in a SMES-battery hybrid energy storage system using a novel battery lifetime model
Analysis of battery lifetime extension in a SMES-battery hybrid energy storage system using a novel battery lifetime model
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DOI：
10.1016/j.energy.2015.03.132
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发表时间：
2015-06
期刊：
影响因子：
9
通讯作者：
Jianwei Li;A. Gee;M. Zhang;W. Yuan
中科院分区：
文献类型：
--
作者：
Jianwei Li;A. Gee;M. Zhang;W. Yuan
在离网风能系统中，电池经常经历频繁的充电/放电循环，这会缩短电池的使用寿命。此外，由于电机启动和其他高“浪涌电流”负载，电池会经历高放电率，这也会降低电池寿命。本文提出了一种超导磁储能和电池混合储能系统，有利于减少电池短期功率循环和高放电电流。为了演示系统性能，详细描述了一个具有代表性的离网风力发电系统模型，该模型包含湍流风变化、负载变化和储能系统。为了估计电池寿命的改善，描述了一种新颖的电池寿命模型，该模型量化了充电/放电循环次数以及放电效应率的影响。该模型使用先前报告的数据进行验证。这项工作通过描述使用超导能量存储在风能转换应用中电池寿命的估计改进并提出一种新的方法来推进先前的研究。此外，所提出的电池寿命模型还可用于其他应用。
In off-grid wind energy systems, batteries often undergo frequent charge/discharge cycles, which reduce battery service life. In addition, due to motor start and other high ‘inrush current’ loads batteries undergo high rates of discharge which also degrade battery life. In this paper, a superconducting magnetic energy storage and battery hybrid energy storage system is proposed, which is beneficial in reducing battery short term power cycling and high discharge currents. To demonstrate system performance, a representative off-grid wind power system model is described in detail which incorporates turbulent wind variations, load variations and energy storage systems. To estimate battery lifetime improvement, a novel battery lifetime model is described, which quantifies the impact of both the number of charge/discharge cycles and also the effect rate of discharge. The model is validated using previously reported data. This work advances previous studies by describing the estimated improvement in terms of battery life in a wind energy conversion application by use of superconducting energy storage and by presenting a novel method for doing so. In addition, the proposed battery lifetime model can be potentially used in other applications.