607 圧電コンポジットを利用した振動発電装置の発電特性評価と回路損失評価(エナジーハーベスト・ヘルスモニタリング,OS-12 スマート構造システム,総合テーマ「伝統を,未来へ!」)

概要

論文の詳細を見る
Rotating machinery is widely used in the industrial plant. In order to ensure safety operation of the rotating machinery, vibration condition monitoring of the machinery can play a crucial role. In the previous authors' study, the vibration energy harvester of the piezoelectric bimorph cantilever type was proposed for vibration condition monitoring applications of rotating machinery. Proposed energy harvester consists of Macro-Fiber Composite (MFC). In this study, not only the DC power generation performance but also power loss in full-bridge rectifier of the proposed vibration energy harvester is experimentally evaluated. The maximum DC output power through 287.6 Kilo-Ohm resistor which includes instruments internal resistances obtained 109.5 microwatt when subjected to vibration source input magnitude of 0.71 (mm/s rms) at the resonant frequency of the harvester. The impedance matching between MFC actuators and the electrical resistive load was also effective for maximizing the DC power transfer of the vibration energy harvester. The power loss in full-bridge rectifier reached 13.7 microwatt.
2010-09-14