Increased-bandwidth, meandering vibration energy harvester

Author

Berdy, D.F. ; Jung, B. ; Rhoads, J.F. ; Peroulis, D.

Author_Institution

Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA

fYear

2011

fDate

5-9 June 2011

Firstpage

2638

Lastpage

2641

Abstract

This paper details how a distributed proof mass can be used to achieve an increased operational bandwidth in a low-frequency, meandering piezoelectric vibration energy harvester. The fabricated device features two closely spaced resonant modes at 33 Hz and 43.3 Hz with measured RMS output powers of 107.3 μW and 74.9 μW, respectively, at a peak acceleration magnitude of 0.2 g. The output power of this system remains above 25 μW in the frequency band from 32.3 Hz up to 45 Hz. The increased bandwidth is enabled by the unique frequency response characteristics of the coupled system.

Keywords

energy harvesting; piezoelectric devices; vibrations; frequency 32.3 Hz to 45 Hz; piezoelectric vibration energy harvester; power 107.3 muW; power 74.9 muW; spaced resonant modes; Bandwidth; Equivalent circuits; Integrated circuit modeling; Power generation; Resonant frequency; Springs; Vibrations; Energy harvesting; distributed mass; energy scavenging; increased bandwidth; meander; piezoelectric;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Sensors, Actuators and Microsystems Conference (TRANSDUCERS), 2011 16th International

Conference_Location

Beijing

ISSN

Pending

Print_ISBN

978-1-4577-0157-3

Type

conf

DOI

10.1109/TRANSDUCERS.2011.5969872

Filename

5969872