Piezoelectric energy harvesting from hybrid vibrations

Abstract

The concept of harvesting energy from ambient and galloping vibrations of a bluff body with a triangular cross-section geometry is investigated. A piezoelectric transducer is attached to the transverse degree of freedom of the body in order to convert these vibrations to electrical energy. A coupled nonlinear distributed-parameter model is developed that takes into consideration the galloping force and moment nonlinearities and the base excitation effects. The aerodynamic loads are modeled using the quasi-steady approximation. Linear analysis is performed to determine the effects of the electrical load resistance and wind speed on the global damping and frequency of the harvester as well as on the onset of instability. Then, nonlinear analysis is performed to investigate the impact of the base acceleration, wind speed, and electrical load resistance on the performance of the harvester and the associated nonlinear phenomena that take place. The results show that, depending on the interaction between the base and galloping excitations, and the considered values of the wind speed, base acceleration, and electrical load resistance, different nonlinear phenomena arise while others disappear.Short-and open-circuit configurations for different wind speeds and base accelerations are assessed. The results show that the maximum levels of harvested power are accompanied by a minimum transverse displacement when varying the electrical load resistance.

A Novel Piezoelectric Energy Harvester Using the Macro Fiber Composite Cantilever with a Bicylinder in Water

“…Under the airflow flutter excitation, the airfoil-based piezoelectric energy harvesters were mathematically and experimentally investigated, and it was pointed out that the airfoil-based energy harvester should be an effective way of converting wind energy into electricity [22][23][24][25][26][27]. Furthermore, with different cross-section geometries (including square, D-shaped, and triangular sections), some galloping-based piezoelectric energy harvesters were presented to increase the output power [28][29][30][31][32][33][34].…”

Aeroelastic energy harvesting: A review

“…The concept of harvesting energy from hybrid vibrations, namely, base and galloping of a bluff body was theoretically investigated by Yan, Abdelkefi, and Hajj (2014) and theoretically and experimentally studied by Bibo, Abdelkefi, and Daqaq (2015). Nonlinear electroaeroelastic models that take into account the galloping force and moment nonlinearities and the base excitation effects were developed.…”

Energy harvesting by means of flow-induced vibrations on aerospace vehicles

“…It was shown that at 60 lower wind speeds, more energy was harvested at higher temperature values, while at relatively higher wind speeds, more energy was generated at lower temperatures. Yan et al [110] took base vibration into account and studied its effects. The numerical results…”