A Capacitor-Based Bias-Flip Rectifier with Electrostatic Charge Boosting for Triboelectric Energy Harvesting Achieving Auto-MPPT at Breakdown Voltage and 14× Power Extraction Improvement

📋 论文概要

本文提出了一种基于电容的偏置翻转整流器，结合静电电荷增强技术，用于摩擦纳米发电机（TENG）的能量收集。该设计旨在解决传统被动整流器能量提取效率低的问题，通过优化电荷管理显著提升输出功率。

💡 主要创新点

• 采用电容式偏置翻转结构，实现TENG电容的快速电压翻转，降低能量损耗
• 引入静电电荷增强机制，利用额外电荷注入提升能量提取效率

🏷 关键词

📄 原文摘要

With the advantages of flexibility and power density, triboelectric nanogenerators (TENGs) are promising in harvesting ambient mechanical energy via triboelectrification and electrostatic induction to power lower-power Internet-of-Things (IoT) and biomedical devices. The equivalent circuit model of a TENG contains an AC current source, IT, and a variable capacitor, CT, with a capacitance-varying ratio of β, equal to CT,max/CT,min (Fig. 31.11.1 top). When harvesting energy with a passive rectifier, e.g., a dual-output full-bridge rectifier (FBR) [1, 2], the energy extraction performance is typically low due to the energy loss when the TENG voltage is under the FBR threshold. To improve the performance, the parallel-synchronized switch harvesting on inductor (P-SSHI) rectifier was employed to synchronously flip the charge across CT to reduce energy losses [3]. However, the voltage across the TENG (VT) may decrease in the negative-IT half-period,

👥 作者与机构

Wenyu Peng, Xinling Yue, Lukasz Pakula, Sijun Du

Delft University of Technology, Delft, The Netherlands