Maximum power point of piezoelectric energy harvesters: a review of optimality condition for electrical tuning

This paper is a review and synthetic presentation of existing energy harvesting circuits and techniques for piezoelectric energy scavengers. We provide a hierarchical presentation based on functional analysis to distinguish between existing solutions which may look superficially similar but prove to...

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Bibliographic Details
Published in:Smart materials and structures 2020-03, Vol.29 (3), p.33001
Main Authors: Brenes, A, Morel, A, Juillard, J, Lefeuvre, E, Badel, A
Format: Article
Language:English
Subjects:
Electric power
Electronics
Engineering Sciences
frequency tuning
impedance matching
load adaptation
maximum power point
Mechanics
piezoelectric energy harvester
SECE and variants
SSHI and variants
Vibrations
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Summary:This paper is a review and synthetic presentation of existing energy harvesting circuits and techniques for piezoelectric energy scavengers. We provide a hierarchical presentation based on functional analysis to distinguish between existing solutions which may look superficially similar but prove to perform very differently in practice. Based on this hierarchical presentation, definitions of topologies, architectures and techniques are given in order to avoid redundancy among existing and future solutions. Then, after a thorough and unified mathematical analysis of the general problem to address, we present a comparison of the conditions for each technique to maximize the power flow from an external vibration source to an electrical load. This analysis is meant to help researchers and engineers make optimal choices for effective implementation of maximum power point tracking.
ISSN:0964-1726
1361-665X
DOI:10.1088/1361-665X/ab6484