A 93%-Power-Efficiency Photovoltaic Energy Harvester with Irradiance-Aware Auto-Reconfigurable MPPT Scheme Achieving >95% MPPT Efficiency Across 650μW to 1W and 2.9ms FOCV MPPT Transient Time

📋 论文概要

该论文提出了一种光伏能量采集器，采用辐照度感知的自动可重构最大功率点跟踪（MPPT）方案，在宽功率范围内实现了93%的功率效率和超过95%的MPPT效率，解决了传统MPPT方案在宽辐照度变化下效率低的问题。

💡 主要创新点

• 提出辐照度感知的自动可重构MPPT方案，能根据光照强度动态调整配置，提升宽功率范围的跟踪效率。
• 通过电路设计优化实现高达93%的整体功率效率，同时保持MPPT效率超过95%。

🏷 关键词

📄 原文摘要

With more and more functions in modern battery-powered mobile devices, enabling light-harvesting in the power management system can extend battery usage time [1]. For both indoor and outdoor operations of mobile devices, the output power range of the solar panel with the size of a touchscreen can vary from 100s of μW to a Watt due to the irradiance-level variation. An energy harvester is thus essential to achieve high maximum power-point tracking efficiency (ηT) over this wide power range. However, state-of-the-art energy harvesters only use one maximum power-point tracking (MPPT) method under different irradiance levels as shown in Fig. 22.5.1 [2-5]. Those energy harvesters with power-computation-based MPPT schemes for portable [2,3] and standalone

👥 作者与机构

Sandip Uprety, Hoi Lee

University of Texas at Dallas, Richardson, TX