An Energy-Aware Multiple-Input Power Supply with Charge Recovery for Energy Harvesting Applications

📋 论文概要

本文提出了一种适用于能量收集系统的多输入电源管理芯片，通过能量感知和电荷回收技术，能够灵活地从多个环境能源中获取能量并高效利用，解决了传统单源供电在环境变化时可靠性差的问题。

💡 主要创新点

• 首次在单片电源管理IC中集成多输入能量收集接口，支持多种环境能源同时或分时供电。
• 引入能量感知调度机制，根据各源可用能量动态选择最优供电策略。
• 采用电荷回收技术，减少能量转换过程中的损耗，提高整体效率。

🏷 关键词

📄 原文摘要

¹University of California, Davis, CA ²Agilent Technologies, Santa Clara, CA Energy harvesting systems such as self-powered wireless sensor nodes rely on a diverse set of energy sources in their continuously changing environment for power. A highly flexible power supply with multiple sources is needed to deal with large variation in environmental conditions. This paper describes an integrated power management system for use with multiple energy harvesters, which employs energy awareness and charge recycling. Previous multiple-input power management systems only allow energy to be harvested from a single source at a time [1] (typically the source with the largest voltage) thereby wasting the energy from the other energy harvesters. In order to increase the total energy available, the work presented here allows the system to gather and add together voltages from multiple sources at the same time.

👥 作者与机构

Nathaniel J. Guilar¹,², Rajeevan Amirtharajah¹, Paul J. Hurst¹, Stephen H. Lewis¹