A Rectifier-less Piezoelectric Energy-Harvesting Interface with a Sense & Track MPPT Achieving Single-Cycle Convergence and 568% Shock Power Improvement

📋 论文概要

本文提出了一种无整流器的压电能量采集接口，采用感测和跟踪最大功率点追踪技术，实现了单周期收敛，解决了传统整流器导致的功率损耗和MPPT收敛慢的问题。该设计适用于物联网边缘设备中的周期振动能量采集。

💡 主要创新点

• 提出无整流器架构，消除了传统整流桥的电压降和功率损耗
• 采用感测和跟踪MPPT方法，在单周期内完成最大功率点追踪，显著提高收敛速度

🏷 关键词

📄 原文摘要

Huazhong University of Science and Technology, Wuhan, China 1 2 *Equally Credited Authors (ECAs) The number of edge sensors for the Internet-of-Things (IoT) has been increasing dramatically every year to feed servers and artificial intelligence (AI) with more and more data. While powering these edge devices with batteries becomes unrealistic, piezoelectric energy harvesting (PEH) provides a promising power solution when they are implemented in industry, machines, and infrastructures. In these application scenarios, there are two main types of kinetic energy: periodical vibrations with stable amplitudes and shocks with varying amplitudes. While most reported bias-flip rectifiers and associated maximum power point tracking (MPPT) techniques perform well under periodical vibration inputs [1–4] compared to other architectures [5–10], their performance decays sharply under shock conditions due to the insufficient impedance-matching speed to accommodate fast

👥 作者与机构

Shunmin Jiang*1, Xinling Yue*1, Yuchen Ma1, Chao Wang2, Sijun Du1

Delft University of Technology, Delft, The Netherlands