Wang, Ya

City University of New York. University Transportation Research Center

PDF

The airfoil-based electromagnetic energy harvester containing parallel array motion between moving coil and

trajectory matching multi-pole magnets was investigated. The magnets were aligned in an alternatively

magnetized formation of 6 magnets to explore enhanced power density. In particular, the magnet array was

positioned in parallel to the trajectory of the tip coil within its tip deflection span. The finite element

simulations of the magnetic flux density and induced voltages at an open circuit condition were studied to

find the maximum number of alternatively magnetized magnets that was required for the proposed energy

harvester. Experimental results showed that the energy harvester with a pair of 6 alternatively magnetized

linear magnet arrays was able to generate an induced voltage (Vo ) of 20 V, with an open circuit condition,

and 475 mW, under a 30 Ω optimal resistance load operating with the wind speed (U ) at 7 m/ s and a natural

bending frequency of 3.54 Hz.

US Transportation Collection

49997-17-25