A New Approach to Wide Bandwidth Energy Harvesting for Piezoelectric Cantilever Based Harvesters

This thesis proposes a control system to widen the bandwidth of piezoelectric transducers (PZTs) for vibration energy harvesting while extracting maximum power. A straightforward complex conjugate match achieves maximum power transfer only at a single frequency while requiring an impractically large inductance. The proposed system intends to address these problems. It incorporates a bi-directional DC/DC converter with feed-forward control to achieve a complex conjugate match over a wide range of frequencies. Analysis of the proposed system and simulation results are presented to verify validity of the proposed method.

Name thesis:degree_name

Master of Science

Level thesis:degree_level

masters

Discipline thesis:degree_discipline

Electrical Engineering

Department dc:contributor.department

Electrical and Computer Engineering

Grantor dc:publisher

Virginia Tech

Year dc:date.issued

2013

Author dc:creator

• Turner, John Andrew

Chair dc:contributor.committeechair

• Ha, Dong Sam

Committee members dc:contributor.committeemember

• Koh, Kwang-Jin
• Meehan, Kathleen

• Energy harvesting
• DC-DC Converters
• Wide band
• Piezoelectric Cantilever

Statement dc:rights

• In Copyright

Licence dc:rights.uri

• http://rightsstatements.org/vocab/InC/1.0/

Dc Identifier Other

vt_gsexam:329

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/19301