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Performance analysis of hybrid vibrational energy harvesters with experimental verification

Sriramdas, Rammohan and Pratap, Rudra (2018) Performance analysis of hybrid vibrational energy harvesters with experimental verification. In: SMART MATERIALS AND STRUCTURES, 27 (7).

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Official URL: https://dx.doi.org/10.1088/1361-665X/aabf08

Abstract

In the present work, performance indices for a hybrid energy harvester (HEH) that is composed of piezoelectric and electrodynamic or electromagnetic mechanisms of energy conversion are analyzed. Performance of a HEH is defined in terms of Q-normalized power factor and efficiency of conversion. They are observed to acutely depend on coupling strength or figures of merit in both piezoelectric and electrodynamic domains. The influence of figures of merit on the Q-normalized power factor, and the limits of conversion efficiency are explored. Based on the studies, a suitable range for figures of merit that would maximize both Q-normalized power factor and conversion efficiency in hybrid harvesters is proposed. The proposed idea is verified experimentally for the appropriate values of figures of merit and efficiencies by fabricating and testing four experimental models of the HEHs.

Item Type: Journal Article
Additional Information: Copy right of this article belong to IOP PUBLISHING LTD, TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Division of Interdisciplinary Research > Centre for Nano Science and Engineering
Depositing User: Id for Latest eprints
Date Deposited: 18 Jun 2018 14:51
Last Modified: 18 Jun 2018 14:51
URI: http://eprints.iisc.ac.in/id/eprint/60031

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