Optimization of Piezoelectric Energy Harvesting System Using Split-Width Method

Chow, Man-Sang and Jedol Dayou, (2011) Optimization of Piezoelectric Energy Harvesting System Using Split-Width Method. In: UNSPECIFIED. (Submitted)


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In this paper, a novel method to optimize the harvesting of electrical energy from ambient vibration using piezoelectric, with high power density, is proposed. The piezoelectric in the form of a thin film is attached to a cantilever beam with similar dimensions. By folding equally and then splitting the piezo film with pre-defined dimensions, the width of each film reduces in which as a result reduces the damping of the system. Hence, the harvesting system becomes more efficient in converting ambient vibration into electricity. Experimental results show that the harvested electrical power increases with the increasing of folding number compared to the single piezo film with initial dimensions. The percentages of power increase for 1-fold and 2-folds are 145% and 176%, respectively. However, the splitting of the piezo material causes trade-off between the harvested power output with the effective bandwidth.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Uncontrolled Keywords: Piezoelectric harvesting system, ambient vibration, vibration-electricity converter
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Date Deposited: 27 Mar 2014 01:06
Last Modified: 09 Nov 2017 07:56
URI: http://eprints.ums.edu.my/id/eprint/8607

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