A Magneto-Mechanical Piezoelectric Energy Harvester Designed to Scavenge AC Magnetic Field from Thermal Power Plant with Power-Line Cables

Authors

Quan Wang
Kyung-Bum Kim
Sang-Bum Woo
Yooseob Song, The University of Texas Rio Grande Valley
Tae-Hyun Sang

Document Type

Article

Publication Date

4-22-2021

Abstract

Piezoelectric energy harvesters have attracted much attention because they are crucial in portable industrial applications. Here, we report on a high-power device based on a magneto-mechanical piezoelectric energy harvester to scavenge the AC magnetic field from a power-line cable for industrial applications. The electrical output performance of the harvester (×4 layers) reached an output voltage of 60.8 V_max, an output power of 215 mW_max (98 mW_rms), and a power density of 94.5 mW_max/cm³ (43.5 mW_rms/cm³) at an impedance matching of 5 kΩ under a magnetic field of 80 μT. The multilayer energy harvester enables high-output performance, presenting an obvious advantage given this improved level of output power. Finite element simulations were also performed to support the experimental observations. The generator was successfully used to power a wireless sensor network (WSN) for use on an IoT device composed of a temperature sensor in a thermal power station. The result shows that the magneto-mechanical piezoelectric energy harvester (MPEH) demonstrated is capable of meeting the requirements of self-powered monitoring systems under a small magnetic field, and is quite promising for use in actual industrial applications.

Comments

© 2021 by the authors.

Recommended Citation

Wang, Q.; Kim, K.-B.; Woo, S.-B.; Song, Y.; Sung, T.-H. A Magneto-Mechanical Piezoelectric Energy Harvester Designed to Scavenge AC Magnetic Field from Thermal Power Plant with Power-Line Cables. Energies 2021, 14, 2387. https://doi.org/10.3390/en14092387

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Publication Title

Energies

DOI

10.3390/en14092387