Significant power enhancement method of magneto-piezoelectric energy harvester through directional optimization of magnetization for autonomous IIoT platform

Cho, Jae Yong; Kim, Jihoon; Kim, Kyung-Bum; Ryu, Chul Hee; Hwang, Wonseop; Lee, Tae Hee; Sung, Tae Hyun

doi:10.1016/j.apenergy.2019.113710

Cited by 17 publications

(6 citation statements)

References 23 publications

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“…With the rapid industrialization in recent years, the problem of energy shortage has become increasingly severe. Recycling wasted energy in the use process to power the sensors of systems has become a research priority [2], [3]. In addition, the development of wireless sensors and the expectation of self-sustaining wireless sensors have promoted the investigation of various energy harvest technologies [4].…”

Section: Introductionmentioning

confidence: 99%

Contact and Non-Contact Dual-Piezoelectric Energy Harvesting System Driven by Cantilever Vibration

Peng

Liu

et al. 2022

IEEE Access

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In this study, a dual-piezoelectric energy harvesting system with contact and non-contact characteristics was driven by a cantilever beam. The harvester performance of the multipoint energy harvesting system driven by cantilever-beam vibration was designed, detailed analysis and optimization strategies were developed, and its application in the security field was successfully demonstrated. Herein, we provide theoretical guidance for the design of the dual-piezoelectric energy harvesting. We designed and fabricated a prototype of the dual-piezoelectric energy harvesting. A test system was designed and constructed. The relationships among the distance and frequency of the two piezoelectric acquisition mechanisms and the open-circuit voltage were investigated. Additionally, the effects of different loads on the output power were examined. The peak power reached 10.12 mW under a gravitational acceleration of 1g. The analysis indicated that the dual-piezoelectric energy harvest device has a higher energy harvest efficiency than the singlepiezoelectric energy harvest device. Owing to the multipoint harvest strategy, even if a generator suddenly deteriorates or fails, the entire system can maintain a certain power output, which is more commercially feasible. The results of this study indicate that the output of the piezoelectric energy harvesting is stable and reliable and that the output energy satisfies the requirements for a safety warning device.

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Section: Introductionmentioning

confidence: 99%

Contact and Non-Contact Dual-Piezoelectric Energy Harvesting System Driven by Cantilever Vibration

Peng

Liu

et al. 2022

IEEE Access

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“…The device could also light up hundreds of light-emitting diode arrays with average output power and operate a digital clock without charging capacitors at low magnetic fields (≤50 µT). By optimizing the direction of magnetization by vertically adjusting the flux direction of the power cord and magnetic direction of the tip magnet, Cho et al [25] obtained a high electrical power of 39.2 mW (planar-vertical) at 5 kΩ for the magnetic piezoelectric energy harvester. Lu et al [18] reported a Pb(Zr, Ti)O 3 (PZT)/Ni single piezoelectric wafer cantilever with a permanent magnet (NdFeB) tip, coupled by the magnetostriction of the Ni beam to the magnetic torque of the NdFeB magnets, with a maximum power density of 270 µW/cm 3 .…”

Section: Introductionmentioning

confidence: 99%

“…By optimizing the direction of magnetization by vertically adjusting the flux direction of the power cord and magnetic direction of the tip magnet, Cho et al. [25] obtained a high electrical power of 39.2 mW (planar–vertical) at 5 kΩ for the magnetic piezoelectric energy harvester. Lu et al.…”

Section: Introductionmentioning

confidence: 99%

Hybrid piezo/triboelectric nanogenerator for stray magnetic energy harvesting and self‐powered sensing applications

Yang

Wang

et al. 2021

High Voltage

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Stray magnetic fields with a fixed frequency of 50/60 Hz are ubiquitous in buildings, factories, and power system equipment. Researchers are increasingly focusing on harvesting electrical energy from stray magnetic fields to provide sustainable energy for the Internet of Things (IoT) devices. Magneto-mechano-electric energy conversion is the most efficient way to convert low-frequency stray magnetic fields into electricity. In this study, we proposed a hybrid piezo/triboelectric nanogenerator (HP/TENG) on the basis of a cantilever beam to use stray magnetic fields from the surrounding environment. The hybrid nanogenerator provided high output voltage/current and power of ∼176 V/ 375 μA and 4.7 mW (matched impedance of 20 kΩ) in a magnetic field environment of 4 Oe. The device provided a stable 3.6 V direct current output by incorporating energy management circuitry to sustainably drive power to commercial wireless temperature/ humidity sensors. The HP/TENG has a significant application potential in IoT, which can use stray magnetic energy and a power wireless sensor system.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…Because vibrations have a high energy density [3][4][5], using vibration energy as the power source of energy harvesters is gaining favor. Kinetic harvesters mainly include the piezoelectric energy harvester [6][7][8][9][10][11][12], electromagnetic energy harvester [13][14][15][16][17], electrostatic energy harvester [18,19], friction energy harvester [20][21][22][23] and multi-mode composite energy harvester [24][25][26]. The piezoelectric energy harvester has the advantages of high output voltage, simple structure, easy integration, etc.…”

Section: Introductionmentioning

confidence: 99%

A Tuning Fork Frequency Up-Conversion Energy Harvester

Gao

Jin

et al. 2021

Sensors

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In this paper, a novel tuning fork structure for self-frequency up-conversion is proposed. The structure has an in-phase vibration mode and an anti-phase vibration mode. The in-phase vibration mode is used to sense the environment vibration, and the anti-phase vibration mode is used for energy conversion and power generation. The low-frequency energy collection and the high-frequency energy conversion can be achieved simultaneously. Theoretical and experimental results show that the tuning fork frequency up-conversion energy harvester has excellent performance. This structure provides the energy harvester with excellent output power in a low-frequency vibration environment. At the resonant frequency of 7.3 Hz under 0.7 g acceleration, the peak voltage is 41.8 V and the peak power is 8.74 mW. The tuning fork frequency up-conversion energy harvester causes the humidity sensor to work stably. The structure has the potential to power wireless sensor nodes or to be used as a small portable vibration storage device, especially suitable for the monitoring of the environment related to human movement.

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Significant power enhancement method of magneto-piezoelectric energy harvester through directional optimization of magnetization for autonomous IIoT platform

Cited by 17 publications

References 23 publications

Contact and Non-Contact Dual-Piezoelectric Energy Harvesting System Driven by Cantilever Vibration

Contact and Non-Contact Dual-Piezoelectric Energy Harvesting System Driven by Cantilever Vibration

Hybrid piezo/triboelectric nanogenerator for stray magnetic energy harvesting and self‐powered sensing applications

A Tuning Fork Frequency Up-Conversion Energy Harvester

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