A Single-Inductor Multi-Channel Thermoelectric Energy Harvesting Interface Realizing Uneven Temperature MPPT with 39.6% Efficiency Enhancement and 62mV Tapped-Inductor-Oscillator-Based Start-Up

📋 论文概要

本文提出一种单电感多通道热电能量收集接口，通过不均匀温度下的最大功率点跟踪（MPPT）技术，将能量转换效率提升39.6%，并采用抽头电感启动电路实现62mV超低电压启动，无需额外电感或开关。整体设计达到90.51%的峰值端到端效率。

💡 主要创新点

• 提出多通道热电能量收集接口，实现不均匀温度条件下的最大功率点跟踪（MPPT），相比传统方案效率提升39.6%。
• 采用抽头电感启动电路，可在62mV超低输入电压下自启动，无需额外电感或串联开关，降低系统复杂度。

🏷 关键词

📄 原文摘要

Abstract This paper presents a thermoelectric energy harvesting (TEH) interface that realizes: 1) a multi-channel TEH for maximum power point tracking (MPPT) under uneven temperature conditions, improving efficiency by up to 39.6%; and 2) a tapped-inductor start-up functionality, which can begin operating at 62mV with no additional inductors or series switches. The overall design achieves a 90.51% peak end-to-end efficiency. Energy harvesting (EH) from ambient sources has been widely adopted to power wearable and IoT devices as a replacement for batteries [1-5]. In such applications, improving harvesting efficiency and minimizing system size are both critical but challenging. Thermoelectric generators (TEGs) convert temperature differences ()T) across their two sides into DC voltage, with larger surface areas providing higher potential energy [6-9]. However, in the real world, the temperature distribution on a large surface is not even. For

👥 作者与机构

Yunzhe Yang, Sijun Du

Delft University of Technology, Delft, The Netherlands