MEMS-based waste vibrational energy harvesters
Download
Author
Hogue, Daniel B.
Gregory, Sarah M.
Date
2013-06Advisor
Grbovic, Dragoslav
Second Reader
Karunasiri, Gamani
Metadata
Show full item recordAbstract
The piezoelectric effect is a phenomenon where strain on a piezoelectric crystal structure causes potential difference at its ends. By merging piezoelectric materials and microelectromechanical systems (MEMS), mechanical vibration could cause the necessary displacement in MEMS to create a potential difference that could be used to power electronic devices. Developing new sustainable energy sources and using energy more efficiently is at the forefront of several research initiatives and is a clear priority for the Department of the Navys strategic planning. This thesis aims to design a vibrational energy harvesting MEMS device to harness vibrational waste energy with the goal of producing power for naval applications. The development and widespread use of vibrational harvesting MEMS would aid the effort to meet each of these goals in the Department of the Navy. Any shore based, seagoing, or expeditionary mechanical platform could serve as a kinetic energy source for vibration energy harvesting MEMS. This thesis investigates the physics, materials, design, optimization, and microfabrication process in the creation of such a device. Time-dependent finite element models for two designs have been developed, simulating electrical power output. Microfabrication processes for the designs have also been developed.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
Related items
Showing items related by title, author, creator and subject.
-
MEMS-based waste vibration and acoustic energy harvesters
Householder, Timothy J. (Monterey, California: Naval Postgraduate School, 2014-12);Every machine vibrates and emits noise. This is unused energy that, with an appropriate mechanism, can be returned to the system. Utilizing an array of piezoelectric microelectromechanical systems (MEMS) devices to harvest ... -
Analysis of AC low-voltage energy harvesting
Shvets, Dmitry (Monterey, California. Naval Postgraduate School, 2014-09);Piezoelectricity is a material property that generates an electric charge proportional to the mechanical stress placed on the material. This phenomenon was first discovered by the Curie brothers in 1880. This material ... -
Theoretical investigation of rotor acceleration scheduling through critical speed
Bridges, Cecil C. (Monterey, California. Naval Postgraduate School, 1997-12);An analytical investigation was conducted to study the amplitude of lateral vibrations and vibrational energy and power of an unbalanced rotor passing through its first lateral bending critical speed. A two degree-of- ...