TY - JOUR

T1 - Analytical Force and Flux for a One-Dimensional Electromagnetic Vibration Energy Harvester

AU - Imbaquingo Muñoz, Carlos Enrique

AU - Beleggia, Marco

AU - Insinga, Andrea Roberto

AU - Bahl, Christian

AU - Mann, Brian

AU - Bjørk, Rasmus

PY - 2020

Y1 - 2020

N2 - A Vibration Energy Harvester (VEH) converts the kinetic energy of a moving source into electrical energy. Here we consider a one-dimensional electromagnetic vibration energy harvester (1D-EMVEH) which consists of three coaxial cylindrical permanent magnets enclosed in a tube, such that the middle magnet is levitating. The resulting movement of the middle magnet can then induce an electromotive force (emf) in one or more surrounding coils. Using an analytical model, we derive expressions for the 1D-EMVEHs characteristic frequency and output power by using Fourier space approach. First, the magnetostatic energy of the system as a function of the position of the levitating magnet is calculated. Its spatial gradient gives the force acting on a magnet, which drives its dynamics. Next, more accurate magnetic flux and emf expressions are obtained. The results are compared with experimental measurements, revealing an excellent agreement.

AB - A Vibration Energy Harvester (VEH) converts the kinetic energy of a moving source into electrical energy. Here we consider a one-dimensional electromagnetic vibration energy harvester (1D-EMVEH) which consists of three coaxial cylindrical permanent magnets enclosed in a tube, such that the middle magnet is levitating. The resulting movement of the middle magnet can then induce an electromotive force (emf) in one or more surrounding coils. Using an analytical model, we derive expressions for the 1D-EMVEHs characteristic frequency and output power by using Fourier space approach. First, the magnetostatic energy of the system as a function of the position of the levitating magnet is calculated. Its spatial gradient gives the force acting on a magnet, which drives its dynamics. Next, more accurate magnetic flux and emf expressions are obtained. The results are compared with experimental measurements, revealing an excellent agreement.

U2 - 10.1109/TMAG.2020.3024734

DO - 10.1109/TMAG.2020.3024734

M3 - Journal article

JO - I E E E Transactions on Magnetics

JF - I E E E Transactions on Magnetics

SN - 0018-9464

ER -