Picking up railway track vibration energy using a novel doughnut-shaped piezoelectric energy harvester

Zhaowei Min, Xuteng Du, Xiaofan Zhang, Wentao Wu, Xiaobiao Shan and Tao Xie

Energy, 2024, vol. 310, issue C

Abstract: Railway transportation is essential for modern infrastructure, and ensuring safety through real-time monitoring of track conditions is critical. However, providing cost-effective and stable power for sensors in remote areas remains a challenge. This paper presents a novel doughnut-shaped piezoelectric energy harvester designed to address this issue. Under a sinusoidal excitation of 50N and 110Hz, the harvester achieves an output power of 0.047 mW, which increases linearly with load. At optimal resistance (230 kΩ) and a load of 3 kN at 7Hz, the output voltage reaches 37.61V, resulting in an output power of 7.23 mW. In track vibration conditions, the harvester produces an output power of 207.67 mW, making it suitable for Internet of Things (IoT) applications, such as powering acceleration and speed sensors to monitor train operations and ensure track safety.

Keywords: Piezoelectric energy harvester; Rail track vibration; Doughnut-shaped piezoelectric; Energy harvesting; Railway track coupling (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:310:y:2024:i:c:s036054422402958x

DOI: 10.1016/j.energy.2024.133183

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