Study of Energy Harvesting from Low-Frequency Vibration with Ferromagnetic Powder and Non-magnetic Fluid

Abstract

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.

A Free-Standing Electromagnetic Energy Harvester for Condition Monitoring in Smart Grid

“…e following papers [27][28][29] also used Mn-Zn cores for energy harvesting under power lines. In addition, the authors in [34,35] used Mn-Zn for other energy harvesters. For the core equivalent resistance R core , there are three losses occurring in the soft magnetic core when it is placed in the alternating magnetic field, including eddy current losses, hysteresis losses, and residual losses.…”

“…In order to make the electromagnetic energy harvester drive a low energy load and verify the feature of self-powered I-shaped coil, as shown in Figure 22, a circuit [11,35] is designed including storage circuit (part A), buffer circuit (part B), and load (part C).…”

Complex bursting dynamics of a Mathieu-van der Pol-Duffing energy harvester

“…However, some results have been obtained show that bursting oscillations could significantly increase the efficiency of energy harvesting. For example, Cohen et al [46] discussed and explained the dynamical behaviors leading to the conversion of low-frequency oscillations into high frequency ones. Jiang et al [47] found that bursting oscillations could certainly generate more electricity.…”