Optimization of electromagnetic and vibration energy harvesters utilizing flexible piezoelectric cantilever beams

Summary The main goal of work presented in this manuscript was to design and build energy harvesters optimized for maximum electric power output, utilizing flexible piezoelectric cantilever beam structures available on the commercial market. The devices were constructed to simultaneously harvest mag...

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Bibliographic Details
Published inInternational journal of energy research Vol. 44; no. 4; pp. 2998 - 3007
Main Authors Noras, Maciej A., Vo, Misa N.
Format Journal Article
LanguageEnglish
Published Chichester, UK John Wiley & Sons, Inc 25.03.2020
Hindawi Limited
Subjects
Activation
Algorithms
Alternating current
Cantilever beams
Cantilevers
Conductors
Construction
Design optimization
Electric power
Electric power sources
Electricity
electromagnetic fields
Energy harvesting
Energy transfer
finite element analysis
Magnetic field
Magnetic fields
Optimization
piezoelectric effect
Piezoelectricity
Power lines
system optimization
Vibration
vibrations
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Summary:Summary The main goal of work presented in this manuscript was to design and build energy harvesters optimized for maximum electric power output, utilizing flexible piezoelectric cantilever beam structures available on the commercial market. The devices were constructed to simultaneously harvest magnetic field and vibration energies present in vicinity of current‐carrying conductors, such as those used in power lines. Gradient‐free Nelder‐Mead optimization algorithm was used to find geometries that maximized the power output from the harvesters, tuning them to 60‐Hz electric frequency of the AC current flowing in the energized line. The harvesters' electric load was also adjusted to assure the optimal energy transfer. The findings were then used to build harvesters. The optimization process allowed to achieve power densities up to 35.6 mW/cm3 from the constructed scavengers.
ISSN:0363-907X
1099-114X
DOI:10.1002/er.5127