A hybrid generator for virbration energy harvesting applications

Author

Wischke, M. ; Masur, M. ; Woias, P.

Author_Institution

Dept. of Microsyst. Eng., Univ. of Freiburg, Freiburg, Germany

fYear

2009

fDate

21-25 June 2009

Firstpage

521

Lastpage

524

Abstract

As vibrations are present almost everywhere in urban infrastructure, they are an excellent source to power wireless sensors. Based on our previous clamped-free cantilever, we have developed a beam-type vibratory energy harvester that is suspended on both sides. In the generator, a piezoelectric and an electromagnetic transducer are merged to increase the power output. Different arrangements of magnet and inductor have been tested. At resonance 300 muW and 120 muW can be drawn with 10m/s² stimulation and optimal load conditions from the piezoelectric and electromagnetic generator part, respectively.

Keywords

electromagnetic devices; energy harvesting; piezoelectric transducers; wireless sensor networks; beam-type vibratory energy harvester; clamped-free cantilever; electromagnetic transducer; hybrid generator; piezoelectric transducer; power 120 muW; power 300 muW; power wireless sensors; vibration energy harvesting; Electromagnetic forces; Hybrid power systems; Inductors; Magnetic flux; Magnetic levitation; Piezoelectric materials; Piezoelectric transducers; Power generation; Vibrations; Voltage; electromagnetic; energy harvesting; piezoelectric; power generator; vibrations;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Sensors, Actuators and Microsystems Conference, 2009. TRANSDUCERS 2009. International

Conference_Location

Denver, CO

Print_ISBN

978-1-4244-4190-7

Electronic_ISBN

978-1-4244-4193-8

Type

conf

DOI

10.1109/SENSOR.2009.5285376

Filename

5285376