Technique for Measuring Power across High Resistive Load of Triboelectric Energy Harvester.

Subhawat Jayasvasti,Don Isarakorn,Panu Thainiramit,Phonexai Yingyong

doi:10.3390/mi12070766

Subhawat Jayasvasti, Don Isarakorn + Show 2 more

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https://doi.org/10.3390/mi12070766

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Abstract

This paper proposed a more-accurate-than-conventional measurement technique for determining electrical power across exceptionally high-impedance of triboelectric energy harvester (TEH). The key idea of this proposed technique was to measure the voltage across an introduced, parallelly-connected resistor divider to the oscilloscope instead of the voltage across the harvester. An experiment was set up to verify the measurement accuracy performance of this technique against the ideal theoretical values. The maximum percentage error found was only 2.30%, while the conventional measurement technique could not be used to measure voltage across high impedance TEH at all because the readings were not accurate, i.e., the measurement error would be at least over 10%. Therefore, we concluded that this proposed technique should always be used instead of the conventional measurement technique for power measurement of any TEH. A suggestion that we would like to offer to researchers investigating or developing a TEH is that, in using our measurement technique, a good starting point for a load to probe resistance ratio is 1:10, a ratio that worked well for our TEH test bench that we developed.

Highlights

Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations
An energy harvester is required for uses of internet of things (IoTs) applications, including autonomous wireless devices [1,2]
The experimental results demonstrate that the developed technique was more accurate, i.e., with error, in determining ance energy harvester than smaller the conventional technique. the triboelectric energy harvester (TEH) output power than the moreconventional accurate, i.e., with smaller error, in determining thenumerical

Summary

Introduction

Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Power generation by harvesting waste energy has been investigated intensively in the last decade. An energy harvester is required for uses of internet of things (IoTs) applications, including autonomous wireless devices [1,2]. It can reduce the use of conventional battery, whose disposal can create an environmental problem. Many kinds of external energy are produced all the time and everywhere (e.g., wind flow, sun light, gradient thermal, and mechanical vibration)

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