A resonant electromagnetic vibration energy harvester for intelligent wireless sensor systems

Vibration energy harvesting is now receiving more interest as a means for powering intelligent wireless sensor systems. In this paper, a resonant electromagnetic vibration energy harvester (VEH) employing double cantilever to convert low-frequency vibration energy into electrical energy is presented. The VEH is made up of two cantilever beams, a coil, and magnetic circuits. The electric output performances of the proposed electromagnetic VEH have been investigated. With the enhancement of turns number N, the optimum peak power of electromagnetic VEH increases sharply and the resonance frequency deceases gradually. When the vibration acceleration is 0.5 g, we obtain the optimum output voltage and power of 9.04 V and 50.8 mW at frequency of 14.9 Hz, respectively. In a word, the prototype device was successfully developed and the experimental results exhibit a great enhancement in the output power and bandwidth compared with other traditional electromagnetic VEHs. Remarkably, the proposed resonant electromagnetic VEH have great potential for applying in intelligent wireless sensor systems.

[1]  Ping Li,et al.  A vibration energy harvester using magnet/piezoelectric composite transducer , 2014 .

[2]  Joachim Bös,et al.  Vibration-based energy harvesting with stacked piezoelectrets , 2014 .

[3]  Ping Li,et al.  A magnetoelectric, broadband vibration-powered generator for intelligent sensor systems , 2011 .

[4]  Dibin Zhu,et al.  Magnetic tuning of a kinetic energy harvester using variable reluctance , 2013 .

[5]  Y. Wen,et al.  Magnetoelectric coupling characteristics of five-phase laminate composite transducers based on nanocrystalline soft magnetic alloy , 2014 .

[6]  Saibal Roy,et al.  A micro electromagnetic generator for vibration energy harvesting , 2007 .

[7]  Christine Kirchhof,et al.  Giant magnetoelectric effect in vacuum , 2013 .

[8]  G. Carman,et al.  Voltage bias influence on the converse magnetoelectric effect of PZT/terfenol-D/PZT laminates , 2011 .

[9]  Neil M. White,et al.  An electromagnetic, vibration-powered generator for intelligent sensor systems , 2004 .

[10]  Dae-Yong Jeong,et al.  Magnetoelectric properties and magnetomechanical energy harvesting from stray vibration and electromagnetic wave by Pb(Mg1/3Nb2/3)O3-Pb(Zr,Ti)O3 single crystal/Ni cantilever , 2013 .

[11]  Dibin Zhu,et al.  Increasing output power of electromagnetic vibration energy harvesters using improved Halbach arrays , 2013 .

[12]  Tuna Balkan,et al.  An electromagnetic micro power generator for wideband environmental vibrations , 2008 .

[13]  V. Petrov,et al.  Magnetoelectric effect at thickness shear mode in ferrite-piezoelectric bilayer , 2013 .

[14]  Xiaoyong Tian,et al.  Vibration energy harvesting using a phononic crystal with point defect states , 2013 .

[15]  Y. Wen,et al.  Design and testing of piezoelectric energy harvester for powering wireless sensors of electric line monitoring system , 2012 .

[16]  Amin Bibo,et al.  Investigation of Concurrent Energy Harvesting from Ambient Vibrations and Wind , 2013 .

[17]  P. Wright,et al.  Resonance tuning of piezoelectric vibration energy scavenging generators using compressive axial preload , 2006 .