Enhancement of energy-harvesting from random vibration by switched shunt circuit

Shigeru Shimose, Junjiro Onoda, Kanjuro Makihara

研究成果: Conference contribution

抄録

Many researchers have been trying to harvest electric energy from structural vibration for various self-powered small systems. To enhance the harvesting performance self-powered switched shunt circuits have been invented. However, all of these studies have been limited to the energy harvesting form sinusoidal vibrations of a single-degree-of-frcedom (SDOF) structure. In our study, a multiple-degree-of-freedom (MDOF) structure is randomly excited. By using a piezoelectric transducer and a rectifier, electrical energy is taken out from the randomly vibrating structure and stored in a capacitor connected to an electric load. In various conditions, we study how much electrical energy can be stored with and without our switched shunt circuit. Our switched shunt circuit is composed of inductors, resistors, capacitors, diodes, thyristors, and programmable unijunction transistors (PUT), which was originally invented for semi-active vibration suppression. Experimental results show that the stored electrical energy can be increased more than twice with our simple shunt circuit even when the structure is randomly vibrating.

本文言語English
ホスト出版物のタイトル63rd International Astronautical Congress 2012, IAC 2012
ページ7086-7092
ページ数7
出版ステータスPublished - 2012 12月 1
イベント63rd International Astronautical Congress 2012, IAC 2012 - Naples, Italy
継続期間: 2012 10月 12012 10月 5

出版物シリーズ

名前Proceedings of the International Astronautical Congress, IAC
9
ISSN(印刷版)0074-1795

Other

Other63rd International Astronautical Congress 2012, IAC 2012
国/地域Italy
CityNaples
Period12/10/112/10/5

ASJC Scopus subject areas

  • 航空宇宙工学
  • 天文学と天体物理学
  • 宇宙惑星科学

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