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Energy harvesting by sweeping voltage-escalated charging of a reconfigurable supercapacitor array

机译:通过扫描可升级的超级电容器阵列的升压充电来收集能量

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EscaCap is an energy harvester that uses a boost-up charge pump to perform maximum power-transfer tracking (MPTT) while charging a reservoir supercapacitor array (RSA) with a reconfigurable topology. Unlike buck-down type harvesters, the voltage-doubling charge pump of EscaCap enables the sensor nodes to operate under low ambient power conditions. The supercapacitors in the RSA can be dynamically configured for series or parallel topologies by means of a switch array for not only minimizing leakage of the supercapacitors but also improving the charging speed. Furthermore, the RSA of EscaCap is modular and can be easily expanded. Experimental results show that EscaCap can harvest energy efficiently under low and high solar irradiation conditions, achieve shorter charging time, and demonstrate flexibility and robustness.
机译:EscaCap是一种能量收集器,它使用增压电荷泵执行最大功率传输跟踪(MPTT),同时使用可重配置的拓扑结构为储能超级电容器阵列(RSA)充电。与降压型收割机不同,EscaCap的倍压电荷泵使传感器节点能够在低环境功率条件下运行。可以通过开关阵列将RSA中的超级电容器动态配置为串联或并联拓扑,这样不仅可以最大程度地减少超级电容器的泄漏,还可以提高充电速度。此外,EscaCap的RSA是模块化的,可以轻松扩展。实验结果表明,EscaCap可以在低和高太阳辐射条件下有效地收集能量,缩短充电时间,并显示出灵活性和鲁棒性。

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