Sliding Mode Observer for State of Charge Estimation Based on Battery Equivalent Circuit in Electric Vehicles
Sliding Mode Observer for State of Charge Estimation Based on Battery Equivalent Circuit in Electric Vehicles
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DOI：
10.1080/1448837x.2012.11464327
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发表时间：
2012-01
影响因子：
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通讯作者：
Xiaopeng Chen;Weixiang Shen;Zhenwei Cao;Ajay Kapoor
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文献类型：
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作者：
Xiaopeng Chen;Weixiang Shen;Zhenwei Cao;Ajay Kapoor
摘要提出了一种基于改进的电池等效电路的电池荷电状态（SOC）滑模观测器。利用李雅普诺夫稳定性理论证明了SMO的收敛性。SMO的优点是可以补偿电路模型参数变化引起的建模误差。利用DUALFOIL电池仿真程序生成的三组不同放电电流分布下的测试数据提取电路模型参数，验证了所提出的SMO算法用于SOC估计的有效性。仿真结果表明，所提出的SOC观测器能够在电动汽车行驶工况下提供鲁棒的跟踪性能和准确的SOC估计。
Abstract The sliding mode observer (SMO) for battery state of charge (SOC) estimation based on the improved battery equivalent circuit is presented. The convergence of the SMO is proved by Lyapunov stability theory. The advantage of the SMO is that the modelling errors caused by the variation parameters of circuit model can be compensated. Three sets of the testing data under different discharge current profiles generated by DUALFOIL battery simulation program are used to extract the circuit model parameters and to verify the effectiveness of the proposed SMO for the SOC estimation. It shows that the proposed SOC observer can provide robust tracking performance and accurate SOC estimation in electric vehicle driving conditions.