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- W4281297583 abstract "To improving the reliability and flexibility of the power sensors on the transmission lines and towers, and overcome the shortcomings of the traditional power supply with wind-solar hybrid generators and chemical batteries, a piezoelectric wind energy harvester (WEH) with the low onset speed utilizing the enhancement effect of interaction between vortex induced vibration (VIV) and galloping was developed. The VIV-galloping interactive WEH with a square cross-sectional bluff body was designed by letting the ratio of the theoretical onset speed of galloping to that of VIV as low as 1.27, much lower than the critical ratio for full VIV-galloping interaction. The volume of the harvester is about 8.13cm3. To demonstrate the application of the interactive WEHs, a self-powered wireless sensor node for temperature and humidity sensing was designed. The harvester prototype and the wireless sensor node were tested in a small wind tunnel. Experimental results verified that it is a VIV-galloping interactive device and the onset speed is as low as 2.4-2.7m/s. The working range of the prototype is very wide and the electrical output increases with the wind speed from 2.4m/s to 9.9m/s (about 3.67-4.13 times the onset speed). When the wind speed is 6.5m/s, it took about 202 seconds to charge the capacitor of 100μF from 0 to 4.0V and the self-powered wireless sensor node measured and transmitted the ambient temperature and humidity every 63 seconds, which can meet the need of Transmission Lines Condition Monitoring." @default.
- W4281297583 created "2022-05-24" @default.
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- W4281297583 date "2022-05-23" @default.
- W4281297583 modified "2023-10-16" @default.
- W4281297583 title "Vortex-induced vibration and galloping interactive piezoelectric wind energy harvester for self-powered wireless sensor node on power transmission line and tower" @default.
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- W4281297583 doi "https://doi.org/10.1117/12.2640319" @default.
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