Capturing Energy From Power Transmission Lines Galloping and Self-Powered Sensing of Galloping State Through a Rotary Structural Electromagnetic Energy Harvester

Gao, Sihang; Zeng, Xisong; Li, Jiajun; Feng, Shaoxuan; Chen, Yiduo

doi:10.1109/tec.2023.3244661

Cited by 9 publications

(2 citation statements)

References 27 publications

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“…[16,17] These structures have the capability to generate electricity using piezoelectric (PZT) materials, where structural deformations are transformed into electrical energy. [18] In these systems, structural deformations result from flowinduced vibrational motions, which can be primarily categorized as vortex-induced, [19] galloping, [20,21] fluttering, [22,23] and wakeinduced [24] movements. Among these, flutter is characterized by significant structural distortion and can be induced at low wind speeds.…”

Section: Introductionmentioning

confidence: 99%

Flag Fluttering‐Triggered Piezoelectric Energy Harvester at Low Wind Speed Conditions

Özkan,

Erkan,

Basaran

2024

Energy Tech

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Flow‐induced vibrations are common occurrences in various fluid–solid interaction systems existing in nature. One way to transform this vibrational mechanical energy into a usable form is through energy harvesters. This study examines the performance of a piezoelectric energy harvester, where mechanical oscillations result from the fluttering flags made of various fabrics. Flags, made of commonly encountered fabrics, are attached to a cantilever beam inside a wind tunnel with a 30 × 30 cm test section, allowing the airflow to be adjusted between 0 and 10 m s−1. The alpaca flag, with dimensions corresponding to an aspect ratio of 2, can produce meaningful electricity even at a wind speed as low as ≈3.8 m s−1. As the wind speed increases, the fluttering frequency of this flag configuration becomes 10.9 Hz at a wind speed of 5 m s−1, coinciding with the natural frequency of the first mode shape. In this specific arrangement, the structural deformation of the piezoelectric patch on the beam surface is maximized, allowing the harvester system to produce a root mean square voltage of 5 V with a relatively high maximum power of 98 μW.

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Section: Introductionmentioning

confidence: 99%

Flag Fluttering‐Triggered Piezoelectric Energy Harvester at Low Wind Speed Conditions

Özkan,

Erkan,

Basaran

2024

Energy Tech

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“…The galloping energy harvester converts wind energy into electric energy and outputs it through electromagnetic induction [11,12], piezoelectric conversion [13], and piezoelectric electromagnetic cooperation [14]. Currently, studies on galloping energy harvesters can be broadly categorized into two main groups.…”

Section: Introductionmentioning

confidence: 99%

Study on the Influence of Coil Arrangement on the Output Characteristics of Electromagnetic Galloping Energy Harvester

Xiong,

Gao,

Jin

et al. 2023

Micromachines

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The arrangement of the induction coil influences the electromagnetic damping force and output characteristics of electromagnetic energy harvesters. Based on the aforementioned information, this paper presents a proposal for a multiple off-center coil electromagnetic galloping energy harvester (MEGEH). This study establishes both a theoretical model and a physical model to research the influence of the position and quantity of the induction coils on the output characteristics of an energy harvester. Additionally, it conducts wind tunnel tests and analyzes the obtained results. With the increase in the number of induction coils, there is a significant improvement in the duty cycle and output power of the MEGEH, resulting in an amplified energy conversion efficiency. At a wind speed of 9 m/s, the duty ratios of a single set of coils (SC), two sets of coils (TC), and multiple sets of coils (MC) are 30%, 51%, and 100%, respectively. The total output powers are 0.4 mW, 0.62 mW, and 0.72 mW. However, the rate of output growth has decreased from 55% to 16%. The position of the coils affects the initial electromagnetic damping of the energy harvester. Changing the position can reduce the initial electromagnetic damping, thereby decreasing the critical wind speed. The critical wind speed of the MEGEH decreases as the induction coil is positioned further away from the vibration center. When the distance is sufficiently large, the electromagnetic damping force becomes negligible. When the induction coil is positioned centrally, the MEGEH demonstrates its maximum critical wind speed, which has been measured at 4.01 m/s. When the initial distance between the induction coil and the vibrating component is increased to 10 mm, the critical wind speed reaches its minimum value of 2.23 m/s. Therefore, it is necessary to optimize the arrangement of the coils. The coils of the MEGEH should be arranged with the MC and a 10 mm offset from the center.

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Hybrid Nanogenerator Harvesting Electric‐Field and Wind Energy for Self‐Powered Sensors on High‐Voltage Transmission Lines

Huang,

Hu,

Wang

et al. 2024

Adv Funct Materials

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Triboelectric nanogenerators (TENGs) show potential for powering distributed sensors in the smart grids. However, most studies on TENG's applications for energy harvesting from transmission lines primarily focus on vibration and wind energy, neglecting the abundant electric‐field energy from transmission systems. This study proposes a triboelectric‐electrostatic hybrid energy harvester (TEHEH) that integrates a triboelectric nanogenerator with an electric‐field energy harvester (EFEH) to simultaneously capture wind energy and electric‐field energy from the surroundings of transmission lines. The TENG and EFEH can generate open‐circuit voltages of 1280 and 2800 V, respectively, with output powers of 14.3 and 28.9 mW. Hybrid energy harvesting achieves an average power of 6.1 times that of TENG and 2.4 times that of EFEH, demonstrating its superiority. The dual‐channel energy management circuit, utilizing a gas discharge tube and the LTC‐3588, enables the hybrid nanogenerator to effectively power a wireless sensor node, demonstrating its practicality in the complex environments of power transmission lines. This work offers robust technical support for the development of self‐powered monitoring devices on high‐voltage transmission systems.

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Capturing Energy From Power Transmission Lines Galloping and Self-Powered Sensing of Galloping State Through a Rotary Structural Electromagnetic Energy Harvester

Cited by 9 publications

References 27 publications

Flag Fluttering‐Triggered Piezoelectric Energy Harvester at Low Wind Speed Conditions

Flag Fluttering‐Triggered Piezoelectric Energy Harvester at Low Wind Speed Conditions

Study on the Influence of Coil Arrangement on the Output Characteristics of Electromagnetic Galloping Energy Harvester

Hybrid Nanogenerator Harvesting Electric‐Field and Wind Energy for Self‐Powered Sensors on High‐Voltage Transmission Lines

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