Ultra low-power photovoltaic MPPT technique for indoor and outdoor wireless sensor nodes
Ultra low-power photovoltaic MPPT technique for indoor and outdoor wireless sensor nodes
复制标题
适用于室内外无线传感器节点的超低功耗光伏MPPT技术
DOI：
10.1109/date.2011.5763302
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
B. Al
中科院分区：
文献类型：
--
作者：
A. Weddell;G. Merrett;B. Al
光伏（PV）能量收集通常用于为无线传感器节点供电。为了优化收获效率，经常使用最大功率点跟踪（MPPT）技术。最近报道的技术仅集中在室外应用，对于在室内照明下使用而言太耗电。此外，一些技术需要光传感器（或导频单元）来控制它们的操作点。本文介绍了一种超低功耗MPPT技术，它是基于一种新的系统设计和采样保持安排，使MPPT在室内和室外发现的光强度范围内，并能够冷启动。所提出的采样和保持为基础的技术已通过一个原型系统进行了验证。它的性能与最先进的系统相比毫不逊色，并且不需要额外的导频单元或光电二极管。这代表了重要的贡献，特别是对于可能暴露于不同类型的照明的传感器（诸如身体佩戴的或移动的传感器）。
Photovoltaic (PV) energy harvesting is commonly used to power wireless sensor nodes. To optimise harvesting efficiency, maximum power point tracking (MPPT) techniques are often used. Recently-reported techniques focus solely on outdoor applications, being too power-hungry for use under indoor lighting. Additionally, some techniques have required light sensors (or pilot cells) to control their operating point. This paper describes an ultra low-power MPPT technique which is based on a novel system design and sample-and-hold arrangement, which enables MPPT across the range of light intensities found indoors and outdoors and is capable of cold-starting. The proposed sample-and-hold based technique has been validated through a prototype system. Its performance compares favourably against state-of-the-art systems, and does not require an additional pilot cell or photodiode. This represents an important contribution, in particular for sensors which may be exposed to different types of lighting (such as body-worn or mobile sensors).
自主系统的能量收集
DOI：
--
发表时间：
2010
期刊：
--
影响因子：
--
作者：
Beeby, Steve P.;White, Neil
通讯作者：
White, Neil