study of energy harvesting from low-frequency vibration with ferromagnetic powder and non-magnetic fluid

The movement of the creature and the almost wave in the ocean is a low vibration of random energy with a frequency range of 0.1–10 hz. because of its low frequency, the opinion has been that electrical energy generation from this low-frequency wave motion through the electromagnetic induction method is difficult. in this study, an electrical generator was created by the electromagnetic induction method by putting a small mass of ferromagnetic powder in nonmagnetic fluid. a broadband vibration energy harvesting model was created in which vibrations are broadened through a multi-degree of freedom oscillation system using ferromagnetic powder. to generate electricity from low-frequency vibrations (1 hz or less), a non-resonant type model was created by adding fluid to the ferromagnetic powder model and the simulation results confirmed using computational fluid dynamics by creating a working energy harvesting device.