A Dual-Beam Coupled System for Hybrid Galloping and Vortex-Induced Vibration Energy Harvesting

Small wind energy harvesting converts aeroelastic vibration into electricity and can provide independent power supplies for low-power-consumption sensors, which are not convenient replacing chemical batteries frequently. As harvesters collect sustainable from the ambient environment, they environmentally friendly saving. The most widely adopted wind-induced mechanisms designing vortex-induced (VIV) galloping. VIV-based piezoelectric (VIVPEHs) stabilize output voltage at low speeds, while galloping-based (GPEHs) operate high speeds have wide bandwidths. This paper uses a spring to connect two traditional constitute hybrid harvester (HWPEH). It is expected that HWPEH inherit advantages of both harvesters, i.e., it reduce cut-in speed, as VIVPEH, broad working bandwidth, GPEH. effects mechanical circuit parameters on investigated compared harvesters. has been found aerodynamic behavior be customized by changing masses, stiffnesses, shunt resistances, damping coefficients. proposed outperform if system well tuned.