A dual electromagnetic array with intrinsic frequency up-conversion for broadband vibrational energy harvesting
Abstract
This letter proposes a dual electromagnetic array to transform low frequency rectilinear vibrations into electricity with frequency up-conversion. The free of mechanical contact harvester consists of a rectilinear oscillator (RLO) and an array of two identical rotary oscillators (RTO). The RTO includes a rotor and a stator. The rotor has eight cubic magnets distributed centrosymmetrically, and the stator has eight coils. Under rectilinear vibrational excitations, the RLO drives the rotor of the RTO to rotate through magnetic torque acting on the rotors. A slight fluctuation of the rectilinear motion can lead to a great change of torque, which converts the low frequency vibrations into high frequency rotational motions. By adopting the frequency up-conversion mechanism, a high instantaneous output voltage is produced and maintained from 3.0 Hz to 9.5 Hz. Experiments show that with the dual rotor array, the output power is improved and the RLO is able to oscillate at its resonance even if the input frequency is greater than its resonant frequency, which implies a potential solution to suppress and harvest vibration energy during an earthquake if properly arraying multiple rotors. Under the excitation of 0.5 g and 4.0 Hz, the harvester can provide a stable DC power ofmore »
- Publication Date:
- Research Org.:
- State Univ. of New York (SUNY), Albany, NY (United States); Texas A & M Univ., College Station, TX (United States). Texas A & M Engineering Experiment Station
- Sponsoring Org.:
- USDOE Advanced Research Projects Agency - Energy (ARPA-E); US Department of the Navy, Office of Naval Research (ONR)
- OSTI Identifier:
- 1613640
- Grant/Contract Number:
- AR0000531; AR0000945; N000141410230
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 114; Journal Issue: 5; Journal ID: ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Physics; Rotational dynamics; Electric power; Magnetic devices; Vibrational spectra; Energy harvester; Electric motors
Citation Formats
Chen, Jingfan, and Wang, Ya. A dual electromagnetic array with intrinsic frequency up-conversion for broadband vibrational energy harvesting. United States: N. p., 2019.
Web. doi:10.1063/1.5083910.
Chen, Jingfan, & Wang, Ya. A dual electromagnetic array with intrinsic frequency up-conversion for broadband vibrational energy harvesting. United States. https://doi.org/10.1063/1.5083910
Chen, Jingfan, and Wang, Ya. Wed .
"A dual electromagnetic array with intrinsic frequency up-conversion for broadband vibrational energy harvesting". United States. https://doi.org/10.1063/1.5083910. https://www.osti.gov/servlets/purl/1613640.
@article{osti_1613640,
title = {A dual electromagnetic array with intrinsic frequency up-conversion for broadband vibrational energy harvesting},
author = {Chen, Jingfan and Wang, Ya},
abstractNote = {This letter proposes a dual electromagnetic array to transform low frequency rectilinear vibrations into electricity with frequency up-conversion. The free of mechanical contact harvester consists of a rectilinear oscillator (RLO) and an array of two identical rotary oscillators (RTO). The RTO includes a rotor and a stator. The rotor has eight cubic magnets distributed centrosymmetrically, and the stator has eight coils. Under rectilinear vibrational excitations, the RLO drives the rotor of the RTO to rotate through magnetic torque acting on the rotors. A slight fluctuation of the rectilinear motion can lead to a great change of torque, which converts the low frequency vibrations into high frequency rotational motions. By adopting the frequency up-conversion mechanism, a high instantaneous output voltage is produced and maintained from 3.0 Hz to 9.5 Hz. Experiments show that with the dual rotor array, the output power is improved and the RLO is able to oscillate at its resonance even if the input frequency is greater than its resonant frequency, which implies a potential solution to suppress and harvest vibration energy during an earthquake if properly arraying multiple rotors. Under the excitation of 0.5 g and 4.0 Hz, the harvester can provide a stable DC power of 3.1 mW after AC-DC conversion.},
doi = {10.1063/1.5083910},
journal = {Applied Physics Letters},
number = 5,
volume = 114,
place = {United States},
year = {Wed Feb 06 00:00:00 EST 2019},
month = {Wed Feb 06 00:00:00 EST 2019}
}
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Works referencing / citing this record:
A Direction Self-Tuning Two-Dimensional Piezoelectric Vibration Energy Harvester
journal, December 2019
- Zhao, Haibo; Wei, Xiaoxiang; Zhong, Yiming
- Sensors, Vol. 20, Issue 1
A Direction Self-Tuning Two-Dimensional Piezoelectric Vibration Energy Harvester
journal, December 2019
- Zhao, Haibo; Wei, Xiaoxiang; Zhong, Yiming
- Sensors, Vol. 20, Issue 1