Electrical Circuit Model of a Vanadium Redox Flow Battery Using Extended Kalman Filter
Electrical Circuit Model of a Vanadium Redox Flow Battery Using Extended Kalman Filter
复制标题
使用扩展卡尔曼滤波器的钒氧化还原液流电池的电路模型
DOI：
10.1016/j.jpowsour.2013.03.127
复制
发表时间：
2013
影响因子：
9.2
通讯作者：
M. S. Najib
中科院分区：
文献类型：
--
作者：
M. R. Mohamed;H. Ahmad;M. H. A. Seman;S. Razali;M. S. Najib
本文提出了单元电池全钒氧化还原液流电池（V-RFB）的等效电路模型。开发的 V-RFB 模型由开路电池电位 (Ecell(ORP)) 组成，该电池电位与欧姆内阻串联并与 n 电阻电容 (n-RC) 网络并联。 Ecell（ORP）代表V-RFB荷电状态（SOC）的内在关系，而n-RC网络代表V-RFB的极化特性和动态行为。 Ecell(ORP) 和欧姆电阻参数是通过直接测量 25 cm2 单元电池实验室单元 V-RFB 的实验装置获得的，而两对 RC 网络参数是通过扩展卡尔曼滤波器 (EKF) 的递归算法来识别的。该模型的准确性通过几个 SOC 值下的不同脉冲电压进行了验证。最终，该模型通过 V-RFB 系统的实验充放电特性进行了验证。重点提出了系统改进的建议。
This paper presents an equivalent electrical circuit model for a unit cell all-vanadium redox flow battery (V-RFB). The developed V-RFB model consists of an open-circuit cell potential (Ecell(ORP)) which is in series with an ohmic internal resistance and parallel with an n-Resistor–Capacitor (n-RC) network. The Ecell(ORP)represents an intrinsic relationship of the V-RFB state-of-charge (SOC), while the n-RC networks represent the polarization characteristic and dynamic behaviour of the V-RFB. The Ecell(ORP)and ohmic resistance parameters are obtained through a direct measurement of an experimental setup of 25 cm2unit cell laboratory unit V-RFB, whereas the two pairs of RC network parameters are identified through a recursive algorithm of extended Kalman filter (EKF). The accuracy of this model is verified with different pulse voltages at a few values of SOCs. Ultimately, the model is validated with an experimental charge–discharge characterisation of V-RFB system. Suggestion for system improvement is highlighted.