An SSHI Rectifier for Triboelectric Energy Harvesting
An SSHI Rectifier for Triboelectric Energy Harvesting
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DOI：
10.1109/tpel.2019.2934676
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发表时间：
2020-04-01
影响因子：
6.7
通讯作者：
Sun, Ye
中科院分区：
文献类型：
--
作者：
Li, Xian;Sun, Ye
本文首次报道了一种基于同步开关电感(SSHI)的摩擦电能采集整流器。近年来，摩擦电能量采集器(TES)，也被称为摩擦电纳米发电机(TNG)出现并得到了广泛的研究，它为将机械能转化为电能作为电子设备的能源提供了很有前途的解决方案。为了实际使用TNG为电子产品供电，具有高能效的电源管理模块也是必不可少的。摩擦电能采集电源管理电路的研究现状主要集中在提高DC-DC功率效率的技术上。在本文中，我们报告了一种与设计相关的SSHI整流策略，并为同时考虑电容的TEH或TENG的设计提供了一个新的视角。提出了一种新的摩擦电能收集发电理论模型，该模型考虑了实际条件下引入的配对电容和冲击力。我们还证明，超低成本、易于制造的TEH也可以产生合理的功率。实验结果表明，对于一种新设计的低成本TH，与全波桥式整流相比，该整流电路的收获功率提高了242.83。所提出的SSHI接口为提高摩擦电能收集的交直流能效率提供了一种很有前途的整流设计策略。
In this article, a synchronized switching harvesting on inductor (SSHI)-based rectifier for triboelectric energy harvesting is reported for the first time. In the recent few years, triboelectric energy harvesters (TEs), also called triboelectric nanogenerators (TENGs), are emerging and extensively studied, which provide promising solutions for converting mechanical energy to electricity as power resources for electronics. To practically power electronics from TENGs, a power management module with high energy efficiency is also essential. The state of the art of power management circuits for triboelectric energy harvesting is mainly focused on increasing dc-dc power efficiency technically. In this article, we report an SSHI rectifying strategy associated with TEH design and provide a new perspective on designing TEHs or TENGs by considering their capacitance concurrently. A new theoretical model is developed for electricity generation from triboelectric energy harvesting considering the introduced pairing capacitance and the impact force under practical condition. We also demonstrate that ultralow-cost, easy-fabricated TEHs can also generate a reasonable amount of power. The experimental results show that the proposed SSHI rectifier increases the harvested power by 242.83 when compared with a full-wave bridge rectifier for a newly designed low-cost TEH. The proposed SSHI interface provides a promising strategy of rectifier design to enhance ac-dc energy efficiency for triboelectric energy harvesting.