A low frequency vibration energy harvester using magnetoelectric laminate composite

Suna Ju, Song Hee Chae, Yunhee Choi, Seungjun Lee, Hyang Woon Lee, Chang Hyeon Ji

Research output: Contribution to journalArticlepeer-review

83 Scopus citations

Abstract

In this paper, we present a vibration energy harvester using magnetoelectric laminate composite and a springless spherical permanent magnet as a proof mass. The harvester utilizes a freely movable spherical permanent magnet to transform external vibration into a time varying magnetic field applied to the magnetoelectric transducer. The laminate composite consists of a Ni-Mn-Ga-based MSMA (magnetic shape memory alloy) element and a PZT (lead zirconate titanate) plate. A proof-of-concept harvester has been fabricated and characterized at various input accelerations and frequencies. A maximum open circuit voltage of 1.18 V has been obtained in response to a 3g vibration at 17 Hz with the fabricated device. Moreover, a maximum output voltage of 10.24 V and output power of 4.1 μW have been achieved on a 950 Ω load, when the fabricated energy harvester was mounted on a smartphone and shaken by hand.

Original languageEnglish
Article number115037
JournalSmart Materials and Structures
Volume22
Issue number11
DOIs
StatePublished - Nov 2013

Fingerprint

Dive into the research topics of 'A low frequency vibration energy harvester using magnetoelectric laminate composite'. Together they form a unique fingerprint.

Cite this