A Flapping Airflow Energy Harvester with Flexible Wing Sections
Wang, L; Zhu, D
Date: 6 December 2019
Publisher
PowerMEMS 2019
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Abstract
This paper reports a novel method to improve output power of a flapping airflow energy harvester by
introducing flexible wing sections. The flapping airflow energy harvester consists of a cantilever beam
structure with a wing at its free end. A bluff body is placed in front of the wing to induce aerodynamic
instability that leads ...
This paper reports a novel method to improve output power of a flapping airflow energy harvester by
introducing flexible wing sections. The flapping airflow energy harvester consists of a cantilever beam
structure with a wing at its free end. A bluff body is placed in front of the wing to induce aerodynamic
instability that leads to up and down oscillation of the wing. By coupling transducers to the oscillating wing,
electromagnetic in this case, electrical energy can be generated. In this research, instead of using a
commonly used rigid wing, the proposed airflow energy harvester has flexible wing sections that are able to
bend, thus reduce the aerodynamic resistance during the wing oscillation. Therefore, the overall mechanical
damping can be reduced and output power of the proposed energy harvester is increased. It is found
experimentally that the proposed method is able to improve energy harvester performance of flapping airflow
energy harvesters under high airflow speeds.
Engineering
Faculty of Environment, Science and Economy
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