Open Access Journal

ISSN : 2394-2320 (Online)

International Journal of Engineering Research in Computer Science and Engineering (IJERCSE)

Monthly Journal for Computer Science and Engineering

Open Access Journal

International Journal of Engineering Research in Electrical and Electronic Engineering(IJEREEE)

Monthly Journal for Electrical and Electronic Engineering

ISSN : 2395-2717 (Online)

Call For Paper : Vol. 9, Issue 5 2022
Multi-Source Piezoelectric Energy Harvester

Author : Vinitha K J 1 Nisthul G 2

Date of Publication :7th September 2015

Abstract: Energy harvester gained a great amount of attention due to the recent advances in wireless technology allowing sensors to be flexible placed in remote locations and operate at very low power for low powered electronic devices; especially when being placed in a remote area, micro scale energy harvesting is preferable. Piezoelectric energy harvesting is a promising technology for extracting the power from environmental vibrations. It generates the electrical power of few orders of amplitudes which is sufficient to drive several autonomous electrical devices. Such vibration-based energy harvester enhances the power output by increase the effective area of force or pressure. When the application area reduces, the performance of the generator drastically reduces. In this line, present work first studies the various factors affecting the amount of power harvested. Simplest model to be started is with a single source piezoelectric energy harvester. To enhance the power harvesting capability of such simplest system over a wide bandwidth range, a multi-source energy harvester system is explained in the present work. Multi-source energy harvester is achieved by increased area by developing a piezoelectric stack with increased number of parallel cantilever beam. Its capability to work over a range of frequency and number of stack for required power output is mathematically predicted. The system uses an appropriate interface circuit, SECE interface which can enhance the power output of the harvester. The continuous beam models based on Euler theory is considered in this thesis which is solved using Finite Element Method. Results are validated with ANSYS solutions. As a next step, the multi-source harvesting problem is considered to know the modeling issues and amount of power harvested. In shock absorber motion of motorbike while driving through the road the effective vibration is utilize to harvest power. Results are satisfactory when compared to operate a piezoelectric stack.

Reference :

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