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Supercapacitor charge redistribution analysis for power management of wireless sensor networks

机译:用于无线传感器网络电源管理的超级电容器电荷重新分配分析

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摘要

To support many power management applications in wireless sensor networks, a previously developed model is modified to predict the terminal behaviour of a supercapacitor under a dynamic charging/discharging power profile. In addition, a robust model parameter identification method based on the genetic algorithm is developed to determine the model parameters using a dynamic test and a self-discharge experiment. On the basis of the supercapacitor power input model, charge redistribution related figures of merit are derived and used to evaluate the significance of charge redistribution for supercapacitors with various rated capacitance. The results show that supercapacitors with different sizes share similar charge redistribution phenomenon. Furthermore, the charge redistribution significance is studied from several perspectives to provide guidelines for designing power management techniques that can achieve full potential of the energy stored in the supercapacitors.
机译:为了支持无线传感器网络中的许多电源管理应用,对先前开发的模型进行了修改,以在动态充电/放电功率曲线下预测超级电容器的终端行为。另外,开发了一种基于遗传算法的鲁棒模型参数识别方法,通过动态测试和自放电实验确定模型参数。在超级电容器功率输入模型的基础上,推导了电荷重新分配的相关品质因数,并用于评估电荷额定值对于具有各种额定电容的超级电容器的重要性。结果表明,不同尺寸的超级电容器具有相似的电荷再分布现象。此外,从多个角度研究了电荷重新分配的重要性,从而为设计功率管理技术提供了指南,这些技术可充分利用超级电容器中存储的能量。

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