Frequency up-converted low frequency vibration energy harvester using trampoline effect

S. Ju, S. H. Chae, Y. Choi, S. Jun, S. M. Park, S. Lee, H. W. Lee, C. H. Ji

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations

Abstract

This paper presents a non-resonant vibration energy harvester based on magnetoelectric transduction mechanism and mechanical frequency up-conversion using trampoline effect. The harvester utilizes a freely movable spherical permanent magnet which bounces off the aluminum springs integrated at both ends of the cavity, achieving frequency up-conversion from low frequency input vibration. Moreover, bonding method of magnetoelectric laminate composite has been optimized to provide higher strain to piezoelectric material and thus obtain a higher output voltage. A proof-of-concept energy harvesting device has been fabricated and tested. Maximum open-circuit voltage of 11.2V has been obtained and output power of 0.57μW has been achieved for a 50kΩ load, when the fabricated energy harvester was hand-shaken.

Original languageEnglish
Article number012089
JournalJournal of Physics: Conference Series
Volume476
Issue number1
DOIs
StatePublished - 2013
Event13th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications, PowerMEMS 2013 - London, United Kingdom
Duration: 3 Dec 20136 Dec 2013

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