Review on the Design, Geometry and Mechanical Modeling of Piezoelectric Energy Harvesting Structures

Abstract

In recent decades, with the increase of energy demand and the development of wireless and micro-electro-mechanical technology, research in the field of energy recovery has been paid more and more attention. Because of piezoelectric materials can transform mechanical strain energy into electrical charge, therefore, piezoelectric materials are the major method of energy scavenging. The research status of piezoelectric energy harvesting devices at domestic and overseas is presented in detail. This paper includes four aspects: Asingle-degree of freedom system, piezoelectric cantilever beam, energy harvesting circuit and topology optimization of energy harvester. The development perspective of the piezoelectric vibration energy harvester was summarized. The study will be helpful for the researchers who are engaged in the studying on the piezoelectric vibration energy harvesting.

Correction factor of lumped parameter model for linearly tapered piezoelectric cantilever

“…As a result, researchers have developed different modelling techniques and methods to understand the dynamics of piezoelectric cantilever harvesters. Examples of these modelling techniques are the mass-spring-damper model, equivalent circuit model, finite element model (FEM) and thermal analogy methods (Staworko and Uhl, 2008; Zhao et al, 2017). However, most of the work done in this area was based on two main models; the lumped parameter model (LPM) which is mainly a single degree of freedom model (SDOF), and the distributed parameter model (DPM).…”