Optimal Design of Electromagnetic Harvester with Sputtered Thin NdFeB/Ta Film and Considering Lorentz Force

カテゴリ: 論文誌(論文単位)

グループ名: 【E】センサ・マイクロマシン部門

発行日: 2016/03/01

タイトル(英語): Optimal Design of Electromagnetic Harvester with Sputtered Thin NdFeB/Ta Film and Considering Lorentz Force

著者名: Kohei Yamaguchi (Graduate School of Engineering, University of Hyogo), Takayuki Fujita (Graduate School of Engineering, University of Hyogo), Kensuke Kanda (Graduate School of Engineering, University of Hyogo), Kazusuke Maenaka (Graduate School of Enginee

著者名(英語): Kohei Yamaguchi (Graduate School of Engineering, University of Hyogo), Takayuki Fujita (Graduate School of Engineering, University of Hyogo), Kensuke Kanda (Graduate School of Engineering, University of Hyogo), Kazusuke Maenaka (Graduate School of Engineering, University of Hyogo)

キーワード: MEMS，Electromagnetic harvester，Optimal design，Thin NdFeB film，Lorentz force

要約(英語): This paper demonstrates an improvement in the generated power of a NdFeB electromagnetic vibration energy harvester by optimizing the device dimensions considering a mass-damper-spring system and the Lorentz force. The electromagnetic harvester follows a velocity-damped-resonant-generator (VDRG) model. When the electrical and mechanical attenuation coefficients are equivalent and the device is operated at a resonant state, the maximum power will be obtained. In this paper, we simulated and optimized the power generation considering a mass-damper-spring structure and the Lorentz force. From our simulation results, we determined an optimal design for 100 Hz and 3 μmp-p of sinusoidal external vibration to generate 0.42 μW of power from the device with a 10 × 10 × 0.5 mm3 active harvesting area and 50 of Q-factor. This exhibits power that is 43 times larger than the previous design.

本誌: 電気学会論文誌E（センサ・マイクロマシン部門誌） Vol.136 No.3 （2016） 特集：センサ・マイクロマシン英文特集号

本誌掲載ページ: 72-76 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejsmas/136/3/136_72/_article/-char/ja/