Journal article
Improving efficiency of piezoelectric based energy harvesting from human motions using double pendulum system
Energy Conversion and Management, Vol.184, pp.559-570
2019
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Source: InCites
Abstract
Harvesting electrical energy from various human motions using piezoelectric energy harvesters (PEH) is gaining research attention in recent years. The energy harvested could potentially power hand held electronic devices and medical devices without the need of external power source for recharging batteries. In this study, an attempt is made to improve the efficiency of PEH to harvest energy from human motions by adopting a double pendulum system coupled with magnetic force interactions. For the purpose of comparison, three configurations of PEH which includes the conventional PEH with cantilever beam (PEHCB), the PEH with single pendulum system (PEHSP) and the PEH with double pendulum system (PEHDP) are experimentally studied. Excitations by both mechanical shaker and major human body parts during walking and jogging motions are investigated. The performance of each configuration, in terms of voltage and power produced as well as the idle time between each cycle, are analysed, compared and discussed. ANSYS© software is used to analyse the proposed model and MATLAB© software is used to calculate the output power. The results demonstrate that, with the use of the proposed double pendulum system, multiple impacts in each motion cycle is generated, thus producing higher voltage and power as compared to the conventional PEHCB. The idle time between each motion cycle is also effectively reduced. The efficiency of the PEH is thus significantly increased.
Details
- Title
- Improving efficiency of piezoelectric based energy harvesting from human motions using double pendulum system
- Creators
- Iman Izadgoshasb (Corresponding Author) - Southern Cross UniversityYee Yan Lim - Southern Cross UniversityLihua Tang - University of AucklandRicardo Vasquez Padilla - Southern Cross UniversityZi Sheng Tang - Southern Cross UniversityMohammadreza Sedighi - Southern Cross University
- Publication Details
- Energy Conversion and Management, Vol.184, pp.559-570
- Publisher
- Elsevier
- Identifiers
- 991012869000202368
- Academic Unit
- Engineering; Faculty of Science and Engineering; School of Environment, Science and Engineering
- Language
- English
- Resource Type
- Journal article