Investigation of concurrent energy harvesting from ambient vibrations and wind using a single piezoelectric generator

Abstract

First and foremost, I thank God for all the blessings he bestowed on me during my life, and for giving me such a great opportunity, along with the patience and enthusiasm necessary to complete this Ph.D dissertation. Secondly, I especially thank my Thesis advisor, Dr. Mohammed F. Daqaq, for his invaluable support and advice throughout my time in Clemson. I am very blessed to have him as a friend and a mentor. I thank him for patiently teaching me innumerable lessons pertinent to research and also for motivating and inspiring me towards new possibilities of life. Without his thorough guidance, the completion of this work would not have been possible.

Toward Small-Scale Wind Energy Harvesting: Design, Enhancement, Performance Comparison, and Applicability

“…Complex motions were predicted under the combined excitations by analytical solutions based on the normal form method, which were validated by numerical integrations. In a subsequent study, Bibo and Daqaq [68] performed experiment to demonstrate these complex motions by attaching the harvester prototype to a seismic shaker which provided the harmonic base excitation and putting the whole system in a wind tunnel which provided the aerodynamic loads. Below the flutter speed, it was found that the flow serves to amplify the output power from base excitations.…”

“…Recently, the field of small-scale wind energy harvesting has experienced dramatic growth [14][15][16][17][18][19][20][21]. Researchers have reported studies on harnessing wind power using miniaturized windmills (e.g., [22]) or making use of aeroelastic instabilities such as vortex-induced vibration (VIV) (e.g., [23]), galloping (e.g., [24,25]), aeroelastic flutter (e.g., [26]), and wake galloping (e.g., [27]).…”

Incident flow effects on the performance of piezoelectric energy harvesters from galloping vibrations

“…Depending on the operating wind speed, piezoaeroelastic energy harvesters can be designed and deployed in different locations, such as structure's surface, ventilation outlets, rivers, etc., to power sensors or actuators. Several investigations have focused on harvesting energy from flow-induced vibrations, such as vortex-induced vibrations of circular cylinders, 1-4 flutter of airfoil sections, [5][6][7][8][9][10][11][12][13] wake galloping, 14,15 and galloping of prismatic structures. [15][16][17][18][19][20][21][22] The transverse galloping phenomenon has shown a promise for effective energy harvesting.…”

Magnetic Levitation Device for Harvesting Power-frequency Magnetic Field and Mechanical Energy

“…[1][2][3][4][5]. There are many energy sources for power generation [6][7][8], and the mechanisms harvesting two or more energy can attain a higher energy conversion efficiency [9,10].…”