scholarly journals Quasi-Static Finite Element Analysis of Magnetostrictive Vibration Energy Harvester

2012 ◽  
Vol 36 (3) ◽  
pp. 155-160 ◽  
Author(s):  
B. Rezaeealam ◽  
T. Ueno ◽  
S. Yamada
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Energy Harvester ◽  
Vibration Energy ◽  
Element Analysis ◽  
Vibration Energy Harvester

Finite Element Analysis and Structural Parameters Optimization of Piezoelectric Vibration Energy Harvester

2010 ◽  
Vol 44-47 ◽  
pp. 1465-1469
Author(s):  
Ai Min Hu ◽  
Ming Long
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Natural Frequency ◽  
Energy Harvester ◽  
Structural Parameters ◽  
Vibration Energy ◽  
Element Analysis ◽  
Vibration Energy Harvester ◽  
Piezoelectric Vibration Energy Harvester ◽  
Piezoelectric Vibration

The working principle of piezoelectric vibration energy harvester is described. A piezoelectric cantilever and mass composite structure is proposed to harvest vibration energy in resonance mode, and the mass is added on the edge of the cantilever to decrease the natural frequency of the whole structure. The finite element analysis was carried out on the composite structure using the ANSYS software. The displacement results were obtained by structural analysis, and the first order natural frequency was also obtained by modal analysis. Finally, the influence rules among the structural parameters, such as length and width of the cantilever, length and thickness of the mass and width of the PZT, and the natural frequency, piezoelectric output voltage are discussed in detail. Finally, the optimal structure of the harvester is obtained.

Finite-Element Analysis of a Varying-Width Bistable Piezoelectric Energy Harvester

2015 ◽  
Vol 3 (12) ◽  
pp. 1243-1249 ◽  
Author(s):  
Tarun Kumar ◽  
Rajeev Kumar ◽  
Vishal S. Chauhan ◽  
Jens Twiefel
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Energy Harvester ◽  
Element Analysis ◽  
Piezoelectric Energy

Optimal Coil Transducer Geometry for an Electromagnetic Nonlinear Vibration Energy Harvester

2013 ◽  
Vol 558 ◽  
pp. 477-488
Author(s):  
Luke A. Vandewater ◽  
Scott D. Moss ◽  
Steve C. Galea
Keyword(s):  
Numerical Model ◽  
Energy Harvester ◽  
Ball Bearing ◽  
Outer Radius ◽  
Vibration Energy ◽  
Resistive Load ◽  
Element Analysis ◽  
Vibration Energy Harvester ◽  
Numeric Model ◽  
Wire Coil

This paper investigates the optimisation of wire-coil transducers for a recently described strongly nonlinear electromagnetic (EM) vibration energy harvester, by coupling previously derived dynamics of the mechanical system with finite element analysis (FEA) to determine the harvesters EM response. The harvester is implemented in a permanent-magnet/ball-bearing arrangement, where vibrations in a host structure induce oscillations of the ball-bearing. The movement of the bearing changes the magnetic flux in a circular pancake wire-coil, inducing an electromotive force (EMF) in the coil and hence a voltage in the harvester circuit. A quintic-modified Duffing equation is applied to predict frequency-displacement relations for the nonlinear dynamics of the harvester. Faradays Law of Induction is implemented with quasi-static FEA modelling of the magnetic field and linked to the dynamics of the system to develop a numeric model for voltage predictions. The issue of back-EMF and damping is also investigated. A fully integrated mechanical-electromagnetic model is shown to compare well to the quasi-static numerical model. The output characteristics of the prototype harvester are then compared with the numerical model. An optimal coil height of 2 mm is predicted, and demonstrated experimentally to produce 20.3 mW from a 12 Hz, 500 milli-g host vibration. Further investigation of coil inner radius and outer radius yields a predicted resistive load power transfer increase of 18% with the optimal coil geometry.

Modeling and Finite Element Analysis of a micro energy harvester

IMPACT-2013 ◽  
2013 ◽  
Author(s):  
M. S. Bhuyan ◽  
Burhanuddin Y. Majlis ◽  
Sawal H. M. Ali ◽  
Masuri Othman ◽  
Md. Shabiul Islam
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Energy Harvester ◽  
Element Analysis
Sign in / Sign up

Export Citation Format

Share Document