A 43V 400mW-to-21W Global-Search-Based Photovoltaic Energy Harvester with 350µs

📋 论文概要

本文提出一种基于全局搜索的光伏能量收集器，解决部分遮阳条件下光伏板功率-电压曲线存在多个局部最大功率点而导致的功率损失问题。该芯片可在43V电压下处理400mW至21W的功率范围，实现350µs的暂态时间、99.9%的最大功率点跟踪效率和94%的功率转换效率。

💡 主要创新点

• 采用全局搜索算法，能够快速准确地找到全局最大功率点，避免陷入局部最大值，在部分遮阳条件下显著提高能量收集效率。
• 实现宽功率范围（400mW至21W）和高电压（43V）工作，同时保持极快的暂态响应（350µs）和极高的MPPT效率（99.9%）。

🏷 关键词

📄 原文摘要

and remote monitoring stations can be self-powered by solar panels (SPs) having output powers of tens of watts. When the size of the SP is large, part of it can be shaded by birds, trees and other objects resulting in partial shading conditions (PSCs). Multiple local maxima in the power-versus-voltage (P-V) curve of the SP are generated during PSCs [1]. Based on a 10W SP measurement in Fig. 23.6.1, ~30% of the available power of the SP can be lost if an energy harvester only operates at the lower local maximum power point during PSC. This issue was previously addressed by using the approach of module-integrated converters (MIC), which are tied to smaller modules of the SP [2, 3]. Since none of the previously reported integrated maximum power point tracking (MPPT) techniques in MIC can track

👥 作者与机构

Transient Time, 99.9% MPPT Efficiency, and 94% Power Efficiency

Sandip Uprety, Hoi Lee University of Texas, Dallas, Richardson, TX Standalone systems such as outdoor lighting