A triboelectric nanogenerator energy harvesting system based on load-aware control for input power from 2.4 μW to 15.6 μW

被引：17

作者：

Rawy, Karim ^{[1
]}

Sharma, Ruchi ^{[1
]}

Yoon, Hong-Joon ^{[2
]}

Khan, Usman ^{[2
]}

Kim, Sang-Woo ^{[2
]}

Kim, Tony Tae-Hyoung ^{[1
]}

机构：

[1] Nanyang Technol Univ NTU, Sch Elect & Elect Engn, 50 Nanyang Ave, Singapore 639798, Singapore

[2] Sungkyunkwan Univ SKKU, Sch Adv Mat Sci & Engn, Suwon 440746, South Korea

来源：

NANO ENERGY | 2020年 / 74卷 / 74期

关键词：

Energy harvesting; Maximum power point tracking (MPPT); Power conversion efficiency; Power management circuits; Triboelectric nanogenerator (TENG); MPPT; EFFICIENCY;

D O I：

10.1016/j.nanoen.2020.104839

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This paper presents a triboelectric nanogenerator (TENG) energy harvesting system for ultra-low power applications. We propose a load-aware control algorithm to improve the power conversion efficiency as well as the voltage conversion efficiency. The control algorithm minimizes the conduction and switching losses within a switched capacitor charge pump (SCCP) by modulating its switching frequency based on the load condition. Furthermore, a hysteresis input regulation control was developed for preventing breakdown. The overall system was optimized by utilizing a compact spice model from the physical mechanisms of the employed TENG. The fabricated test chip in 65-nm process technology provides a regulated output voltage of 1.2 V with power conversion efficiency of 88% at 30 Hz excitation frequency when the TENG output voltage is 2.5 V.

引用

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