Comparison of low-power single-stage boost rectifiers for sub-milliwatt electromagnetic energy harvesters
Comparison of low-power single-stage boost rectifiers for sub-milliwatt electromagnetic energy harvesters
复制标题
用于亚毫瓦电磁能量收集器的低功率单级升压整流器的比较
DOI：
10.1117/12.2016536
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Szarka G
中科院分区：
文献类型：
--
作者：
Szarka G
能量收集可以为许多重要的嵌入式传感应用领域提供功率自主性。然而，可用的包络线通常限制功率输出以及电压电平。本文介绍了一种空间受限的能量收集使能技术的实现：提出了四种高效且完全自主的功率调节电路，它们能够在低于1 VpkAC输入的情况下以深亚毫瓦输入功率工作，并提供调节的输出电压。这四个完整的系统采用分立元件实现，包括功率转换器、功耗低于10 μW的相应辅助电路、启动电路和用于管理累积能量的超低功耗并联稳压器（带欠压锁定）。这些系统的功率转换器拓扑结构各不相同;所有系统都是升压整流器变体，在单级中整流和升压发电机的输出，选择这些整流器变体是为了能够直接比较极性相关和非极性相关以及全波和半波功率转换器系统。实验结果是在200-1200 μW的采集器输出功率范围内得出的，该系统由采集器单独供电。实验结果表明，在输入功率为650 μW时，占静态功耗的总转换效率高达82%，即使在半波输入功率为200 μW时，其转换效率也保持在65-70%的范围内。超过90%的收获利用率证明在亚毫瓦范围内使用全波拓扑结构。对于所评估的发电机，全波极性相关升压整流器提供了最佳的整体系统效率，可实现高达73%的最大可提取功率。
Energy harvesting could provide power-autonomy to many important embedded sensing application areas. However, the available envelope often limits the power output, and also voltage levels. This paper presents the implementation of an enabling technology for space-restricted energy harvesting: Four highly efficient and fully autonomous power conditioning circuits are presented that are able to operate at deep-sub-milliwatt input power at less than 1 VpkAC input, and provide a regulated output voltage. The four complete systems, implemented using discrete components, include the power converters, the corresponding ancillary circuits with sub-10 μW consumption, start-up circuit, and an ultra-lowpower shunt regulator with under-voltage lockout for the management of the accumulated energy. The systems differ in their power converter topology; all are boost rectifier variants that rectify and boost the generator’s output in a single stage, that are selected to enable direct comparison between polarity–dependent and –independent, as well as between full-wave and half-wave power converter systems. Experimental results are derived over a range of 200–1200 μW harvester output power, the system being powered solely by the harvester. Experimental results show overall conversion efficiency, accounting for the quiescent power consumption, as high as 82% at 650 μW input, which remains in the 65–70% range even at 200 μW input for the half-wave variant. Harvester utilisation of over 90% is demonstrated in the sub-milliwatt range using full-wave topologies. For the evaluated generator, the full-wave, polarity-dependent boost rectifier offers the best overall system effectiveness, achieving up to 73% of the maximum extractable power.
影响因子：
2
作者：
Dayal Rohan;L. Persa
通讯作者：
Dayal Rohan;L. Persa
超低功耗电磁能量收集器的最大功率传输跟踪
影响因子：
6.7
作者：
Szarka G
通讯作者：
Szarka G
用于基于振动的低压能量收集的高效直接交流/直流转换器
DOI：
10.1109/iecon.2008.4758319
发表时间：
2008
期刊：
2008 34th Annual Conference of IEEE Industrial Electronics
影响因子：
--
作者：
S. Dwari;R. Dayal;L. Parsa;K. Salama
通讯作者：
K. Salama