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首页> 外文期刊>IEEE transactions on circuits and systems . I , Regular papers >An Adaptive System for Optimal Solar Energy Harvesting in Wireless Sensor Network Nodes
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An Adaptive System for Optimal Solar Energy Harvesting in Wireless Sensor Network Nodes

机译:无线传感器网络节点中太阳能最佳收集的自适应系统

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摘要

The success of wireless sensor networks and their pervasive use is somehow constrained by energy supply which, generally provided by batteries, is a finite resource. Energy harvesting mechanisms must hence be taken into account to grant a long time operational life, with solar energy being the most interesting one in outdoor deployments due to its relatively high power density. In this paper we propose a low-power maximum power point tracker (MPPT) circuit specifically designed for wireless sensor nodes (hence effective, flexible, low cost and power-aware), i.e., a power transferring circuit for optimally conveying solar energy into rechargeable batteries even in not optimal weather conditions. High efficiency is granted by an ad hoc adaptive algorithm which, by keeping the MPPT electronics in its optimal working point, maximizes energy transfer from the solar cell to the batteries. The suggested implementation is particularly effective in critical weather conditions where traditional solutions do not work and is characterized by a flexible enough design for immediately hosting, in a plug in fashion, different solar panels and battery typologies.
机译:无线传感器网络的成功及其广泛使用在某种程度上受到能源供应的限制,而能源通常由电池提供,是一种有限的资源。因此,必须考虑能量收集机制以延长使用寿命,而太阳能由于其相对较高的功率密度而成为室外部署中最有趣的一种。在本文中,我们提出了一种专为无线传感器节点设计的低功率最大功率点跟踪器(MPPT)电路(因此有效,灵活,成本低且具有功耗意识),即一种将太阳能最佳地传输到可充电电池的功率传输电路。电池,即使不是在最佳天气条件下。临时自适应算法可实现高效率,该自适应算法通过将MPPT电子设备保持在最佳工作点上,从而使从太阳能电池到电池的能量传输最大化。建议的实施方案在传统解决方案无法使用的关键天气条件下特别有效,其特点是足够灵活的设计,可以即插即用地立即容纳不同的太阳能电池板和电池类型。

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