Hybrid energy harvesting from the natural wind and magnetic field

Abstract

This paper proposes a hybrid energy harvester scheme from the natural wind and magnetic field. A prototype is fabricated with a piezoelectric sheet and a Galfenol substrate cantilever. The energy harvester from natural wind not the tunnel wind is simulated and verified by the experiment results. Moreover the performances of hybrid energy harvester with respect to the single energy collection are in-depth investigated. The optimal output criterion is defined and the hybrid output voltages for the optimal parameters can be predicted. The optimal ranges of magnetic field intensity for different wind speeds are presented. Experiment results demonstrate the superiority of the hybrid energy harvester over individual harvesters. Suggestions for the rational design of this hybrid energy harvester are illustrated. This paper provides a feasible solution for the hybrid energy harvester from natural wind and magnetic field, which can be significant for improving the capacity and reliability in energy harvesting.