Electromagnetic Vibration Energy Harvester Interface IC with Conduction-Angle-Controlled Maximum-Power-Point Tracking and Harvesting Efficiencies of up to 90%

📋 论文概要

本文提出了一种用于电磁振动能量采集器的接口IC，通过导通角控制的最大功率点跟踪技术实现高效的AC-DC转换。该电路利用滞环输入电压控制的电感式DC-DC升压转换器，并从采集器电压本身提取所有控制信号，无需额外传感器，从而简化系统设计。

💡 主要创新点

• 提出基于导通角控制的最大功率点跟踪方法，优化能量传输效率。
• 所有控制信号直接从采集器电压产生，无需外部传感器或激励，降低系统复杂度。
• 采用滞环输入电压控制实现DC-DC升压转换，提高转换稳定性。

🏷 关键词

📄 原文摘要

energy harvester (EMH) is an electromechanical mass-spring-damper system transducing electrical energy out of ambient vibrations. Resistive load matching [1] as well as maximum power point (MPP) AC-DC conversion [2] are highly suitable techniques for enhancing the electrical energy output of an EMH. The presented interface IC (Fig. 20.6.1) enables MPP AC-DC conversion by tracking the optimum conduction angle and by employing a hysteretic input voltage controlled inductive DC-DC boost converter. All control signals are derived from the harvester voltage itself. Thus, no additional sensor, harvester disconnection, or DC-DC converter duty-cycle control are needed. Additionally, the implemented voltage conditioning provides over-voltage

👥 作者与机构

Joachim Leicht1, Mohammad Amayreh1, Christian Moranz1,

Dominic Maurath1, Thorsten Hehn2, Yiannos Manoli1,2 University of Freiburg - IMTEK, Freiburg, Germany, HSG-IMIT, Villingen-Schwenningen, Germany 1 2 An electromagnetic vibration