Publication detail
Rolling mass energy harvester for very low frequency of input vibrations
SMILEK, J. HADAŠ, Z. VETIŠKA, J. BEEBY, S.
English title
Rolling mass energy harvester for very low frequency of input vibrations
Type
journal article in Web of Science
Language
en
Original abstract
This paper presents a novel design of a nonlinear kinetic energy harvester for very low excitation frequencies below 10 Hz. The design is based on a proof mass, rolling in a circular cavity in a Tusi couple configuration. This allows for an unconstrained displacement of the proof mass while maintaining the option of keeping the energy transduction element engaged during the whole cycle and thus reducing the required number of transduction elements. Both the presented model and the fabricated prototype of the device employ electromagnetic induction to harvest energy from low frequency and low magnitude vibrations that are typically associated with human movements. The prototype demonstrated an average power of 5.1 mW from a 1.3 g periodic acceleration waveform at 2.78 Hz. The highest simulated normalized power density reaches up to 230 μW/g2/cm3, but this depends heavily on the excitation conditions.
English abstract
This paper presents a novel design of a nonlinear kinetic energy harvester for very low excitation frequencies below 10 Hz. The design is based on a proof mass, rolling in a circular cavity in a Tusi couple configuration. This allows for an unconstrained displacement of the proof mass while maintaining the option of keeping the energy transduction element engaged during the whole cycle and thus reducing the required number of transduction elements. Both the presented model and the fabricated prototype of the device employ electromagnetic induction to harvest energy from low frequency and low magnitude vibrations that are typically associated with human movements. The prototype demonstrated an average power of 5.1 mW from a 1.3 g periodic acceleration waveform at 2.78 Hz. The highest simulated normalized power density reaches up to 230 μW/g2/cm3, but this depends heavily on the excitation conditions.
Keywords in English
Electromagnetic induction, Energy harvesting, Human motion, Low frequency, Nonlinear systems, Tusi couple
Released
15.06.2019
Publisher
Elsevier
ISSN
0888-3270
Number
125
Pages from–to
215–228
Pages count
14
BIBTEX
@article{BUT148583,
author="Jan {Smilek} and Zdeněk {Hadaš} and Jan {Vetiška} and Steve {Beeby},
title="Rolling mass energy harvester for very low frequency of input vibrations",
year="2019",
number="125",
month="June",
pages="215--228",
publisher="Elsevier",
issn="0888-3270"
}