Piezoelectric Bender Transducers for Energy Harvesting Applications

Flow-Induced Energy Harvesting: Conceptual Design and Numerical Analyses of a Piezoelectric Bender for Smart Building Applications

This study focuses on the conceptual design and the numerical analysis of an Energy Harvesting (EH) device, based on piezoelectric materials, for the sustainability of smart buildings. Before that, a comprehensive literature review on the topic takes place. The device consists in an aerodynamic fin attached to a piezoelectric element that makes use of the airflow to harvest energy. The principa...

A periodic folded piezoelectric beam for efficient vibration energy harvesting

Periodic piezoelectric beams have been used for broadband vibration energy harvesting in recent years. In this paper, a periodic folded piezoelectric beam (PFPB) is introduced. The PFPB has special features that distinguish it from other periodic piezoelectric beams. The Adomian decomposition method (ADM) is used to calculate the first two band gaps andtwelve natural frequencies of the PF...

Analysis of the energy harvesting performance of a piezoelectric bender outside its resonance

When the frequency of the source of vibration of a Piezolectric Generator is significantly different from its eigenfrequency, the dielectric power losses become prominent and decrease the amount of power which is practically harvested. For offresonance vibrating frequencies, the optimal operating conditions can be obtained with a Maximum Power Point Tracking method. This paper introduces comple...

Piezoelectric Energy Harvesting Devices for Low Frequency Vibration Applications

Piezoelectric Transformers for Ultra-low Voltage Energy Harvesting Applications ¬リニ

This work shows the possibility to exploit piezoelectric transformers (PTs) for implementing step-up oscillators for ultra-low DC voltage energy harvesting (EH) applications. Oscillation is achieved by coupling a common source stage made up of nchannel JFETs with a piezoelectric transformer acting like a high gain notch filter. A voltage doubler is used to store energy in a capacitor. A mathema...