Energy Harvesting with Coupled Magnetorestrictive Resonators
SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA
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In this report, we report the investigation of energy harvesting with coupled resonators while using magnetostrictive material called Galfenol. Galfenol is an alloy iron with an approximate concentration of iron and gallium as 83 and 17, respectively. Here, we describe a coupled system of mesoscale 1- to 10-cm cantilever beams. The coupled system can be used for harvesting vibration energy to power and aid the performance of low-power wireless sensor nodes. The report is organized as follows. First we introduce the model of the transducer with Galfenol as the magnetostrictive material. Here, we discuss the model parameters derived from the experiment and show the simulations of a single beam. This is followed by the design of the power converters that are best suited for this device. Next, we analyze an all-to-all coupled system. Finally, we draw conclusions and describe the future course of the research.
- Electrical and Electronic Equipment
- Non-electrical Energy Conversion