Model and Performance Analysis of Piezoelectric Energy Harvester System for Different Harvester Beam Configurations

Abstract

Electricity is one of the main energy resources will be used to operate many devices and appliance for making human life as comfortable. In many of the applications the small electronics equipments or devices are used which requires power in milli Watts, micro Watts, nano Watts. This small power requirement devices are gets power form battery which is nowadays replaced by the PEH energy technology. There are many configurations are used and modeled to improve the power performance of the PEH. This paper is focus on the improvements of the PEH through the continuous beam, segmented beam with tip mass and clamped – clamped continuous beam harvester. The performances of the harvesters are analyzed with the factor like voltage generation, power generation, strain stress imposed on the harvester like that. The major difficulty in the use of PEH harvester to obtain electrical energy from the vibrations or motion energy is that the output power is very less; efficiency is very poor during the low frequency periods. The vibration frequency is not at all same for all duration of vibration. So, the vibrations in the frequency reduce the output of PEH particularly at low frequency situations. So, finding and designing a suitable PEH to produce high output power in any field of vibration energy source available.