Magnetic levitation triboelectric nanogenerator for vibration monitoring of hydroelectric units

Magnetic levitation triboelectric nanogenerator for vibration monitoring of hydroelectric units | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Magnetic levitation triboelectric nanogenerator for vibration monitoring of hydroelectric units Yan hui Wang, Xiao Zhang, Song Xu, Fu tian Geng, Da Che, Guan zheng Xu, and 3 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7968171/v2 This work is licensed under a CC BY 4.0 License Status: Posted Version 2 posted You are reading this latest preprint version Show more versions Abstract This paper proposes a self-powered, low-amplitude, high-precision vibration monitoring device with low amplitude, which is used to solve the problems of power supply dependence and poor monitoring effect of small vibrations in the vibration monitoring of traditional hydroelectric units. The device adopts a magnetic levitation structure, with friction layers attached to the upper and lower surfaces of the levitating magnetic poles. Even during minute vibrations, the mutually repulsive magnetic force helps increase the relative motion between the friction layers, generating a large vibration voltage and achieving the function of low-amplitude monitoring. Meanwhile, a magnetic field coil is placed outside the suspended magnetic pole. When vibration occurs, the up-and-down floating of the levitating magnetic poles cuts the magnetic induction coil, generating an induced current and providing stable power support for wireless signal transmission. Experiments show that this device can monitor amplitudes as low as 0.1 mm, and output a peak power of 9 mW (1000 Ω load) at an amplitude of 1 mm and the power density reaches 1.479 W/m², which can stably supply power to the system. This design provides a new idea for the vibration monitoring of hydroelectric generating units. hydraulic turbine vibration monitoring self-powered magnetic levitation triboelectric nanogenerator Full Text Additional Declarations The authors declare no competing interests. Cite Share Download PDF Status: Posted Version 2 posted You are reading this latest preprint version Show more versions Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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