A Magnetostrictive Electric Power Generator for Energy Harvesting From Traffic: Design and Experimental Verification

Abstract

In this paper, we propose an approach to the design of a magnetostrictive electric power generator for energy harvesting from traffic, and we validate it experimentally. We use the dynamic Preisach hysteresis model (DPM) for magnetostrictive materials, operating in hysteretic and time-varying nonlinear regimes to design and simulate a magnetostrictive electrical power generator. The DPM is a development of the classical Preisach model, which is able to include the dynamical features in the mathematical model of hysteresis. We measure the output power capability of the generator, and we show how it is comparable to other energy-harvesting technologies

Modeling and Characterization of a Kinetic Energy Harvesting Device Based on Galfenol

“…Finally, the power harvested by the KEH device under study is comparable with other EH device presented in literature. For example, the measured output power in Reference [48] is 450 mW with 60 Hz frequency of the applied force, while it is about 16 mW at 100 Hz in Reference [49] and 0.1 mW at 5 Hz for the device presented in Reference [50]. In order to make a comparison, by considering that in first approximation the output power scales with the square of the input frequency, it is possible to estimate a KEH device’s output powers of about 0.75 mW at 5 Hz, 11 mW at 60 Hz and 30 mW at 100 Hz, that are comparable by considering the volume of active material.…”

Review of magnetostrictive vibration energy harvesters

“…Configuration of axial type magnetostrictive energy harvesters with pre-stress springs: (a) cross-section view and (b) 3D assembly[30][31][32].…”

A T-Type Self-Decoupled and Passive Dynamic Tension and Torque Sensor: Design, Fabrication, and Experiments

“…The high magnetostrictive coefficient means that the sensing material is more sensitive to external applied force, for more magnetic permeability change is realized under the same stress. All of the merits above make the 2826MB more suitable for force sensing purposes than Terfenol-D and Galfenol [24]. Fig.2 shows the structure of the TTS, which consists of an input shaft on the left and an output flange on the right.…”