Characterization of magnetostrictive bi-stable rotational vibration energy harvester with integrated centrifugal effect

• DOI: 10.1088/1361-665x/ad1dec
• Publication Date: 2024-01-12T22:22:46Z
• Authors: Weiwei Dong; Quan Liang; Huifang Liu; Xutao Mei; Liang Shu; Zhanqi Liu; Yunlong Chang
• Keywords: Centrifugal compressor

Abstract Rotational machinery is a common presence in dust still production, and the occurrence of operational failures components like engines turbine blades necessitates effective measures. To solve this challenge, remote structural health monitoring using energy harvesting wireless sensors has been widely employed to realize self-powered sensing. This study proposes magnet-induced bi-stable rotational harvester (REH), which utilizes centrifugal effect broaden frequency bandwidth, enabling efficient complex environments. A comprehensive mathematical model established facilitate dynamic characteristics system, taking into account effect. The theoretical results demonstrate that gap distance magnetic configuration great effects on system. Additionally, decided by radius speeds also affects stable high-energy orbit oscillations. Furthermore, experimental indicate proposed REH can effectively operate within range 230–290 rpm, with maximum RMS voltage 780 mV corresponding power 4.35 mW. These findings validate performance magnetostrictive its potential address supply challenges for sensors. Overall, presents promising solution enhancing provides insights design high-efficiency nonlinearity