Development of an Airfoil-Based Aeroelastic Energy Harvester Driven by Alternating Airflow

摘要

Wireless sensor networks (WSNs) have been widely used for intelligent monitoring applications. However, due to the short lifetime of chemical batteries, the maintenance of WSNs system has been high-cost and time-consuming. This paper presents an airfoil-based energy harvester aiming to scavenging aeroelastic energy from alternating airflows. Two types of airfoil model (NACA6412 and NACA23012) are used in the experiments to verify the performance of prototypes in a wind tunnel. 15V peak-to-peak voltage can be reached under airflow speed of 8.9m/s and -5 degree attack angle, and the maximum power is about 7μW with 20kΩ load resistance.