电池模拟器LiFePO4动态电池建模

Kyeung-cheol Bae, Seong-chon Choi, Ji-Hwan Kim, C. Won, Yong-Chae Jung
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引用次数: 36

摘要

提出了LiFePO4电池模拟器的动态电池建模方法。锂离子电池的磷酸铁锂电池在其他类型的电池中具有最好的性能。为此,本文描述了电池模拟器中磷酸铁锂电池的模型。LiFePO4电池的电压波形是非线性的,且受瞬态负载的影响。因此采用shepherd模型来描述这种非线性波形,并采用venin蓄电池模型来描述瞬态负载变化所对应的行为特征。此外,为了将电池模型应用于电池模拟器,将所提出的电池模型转换为离散时间模型。在实验中对模型参数进行了估计。对所提出的电池模型进行了比较,通过实验得到了电池的电压波形,并对仿真得到的波形进行了验证。
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LiFePO4 dynamic battery modeling for battery simulator
This paper proposes dynamic battery modeling for LiFePO4 battery simulator. LiFePO4 battery of Li-ion type battery has best characteristic in other type of batteries. So this paper describes LiFePO4 battery model for battery simulator. LiFePO4 battery's voltage waveform is non-linear and changed by transient load. So the shepherd model is applied to describe this non-linear waveform and thevenin battery model is applied to present characteristics of behavior corresponding to the changing of transient load. Also, in order to apply battery model to battery simulator, proposed battery model is converted to discrete time model. Parameters of proposed battery model are estimated in experimental. The proposed battery model is compared getting the voltage waveforms of the battery using experiment with simulation's waveforms is verified.
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