A 93.2%-Efficiency Multi-Input Bipolar Energy Harvester with 17.9× MPPT Loss Reduction

📋 论文概要

本文提出了一种多输入双极性能量收集器，通过创新的电路架构实现了93.2%的峰值效率，并将MPPT损耗降低了17.9倍，解决了多源能量收集（如RF、TEG、PV）中效率与MPPT损耗之间的矛盾。

💡 主要创新点

• 提出多输入双极性架构，能够同时兼容不同功率等级的能量源（如亚微瓦级RF、数十微瓦级TEG和数百微瓦级PV）。
• 通过优化控制策略和电路设计，实现了17.9倍的MPPT损耗降低，显著提升了弱能量源的利用效率。
• 实现了93.2%的高峰值转换效率，在宽输入功率范围内保持高效工作。

🏷 关键词

📄 原文摘要

Hsinchu, Taiwan 3 Realtek Semiconductor, Hsinchu, Taiwan 1 2 Today’s multi-input energy harvesters need to accommodate different energies, such as sub-1μW from radio frequency (RF), tens of μW from thermal energy generators (TEG), and hundreds of μW from photovoltaic (PV). The generic harvesting controller in [1] cannot be used for ultra-low energy sources due to the increased quiescent current (IQ). Although an ultra-low energy source can be obtained by the Battery-TEG Pile-up Buck (BTPB) supply [2] (top left of Fig. 30.2.1), the increased peak inductor current causes a larger input source voltage ripple, ∆VSRC. If VBAT =1.2V and VSRC =0.5V from TEG, then ∆VSRC will increase to 28.8mV (equal to 11.5% of VOC/2, where VOC is the open circuit

👥 作者与机构

Zhen-Yu Yang1, An Chen1, Cheng-Wen Chen1, Wei-Chieh Hung1,

Ke-Horng Chen1, Kuo-Lin Zheng1,2, Ying-Hsi Lin3, Shian-Ru Lin3, Tsung-Yen Tsai3 National Yang Ming Chiao Tung University, Hsinchu, Taiwan Chip-GaN Power Semiconductor,