A model of a magnetically sprung vibration generator for power harvesting applications

P Constantinou, PH Mellor, P Wilcox

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

17 Citations (Scopus)

Abstract

This paper presents a new topology for a magnetically sprung electromagnetic velocity damped resonant generator for applications in harvesting energy from mechanical vibrations. It is demonstrated that the use of a magnetic suspension can achieve a low compliant spring rate required for optimal operation of a small resonant generator at low excitation frequencies. Similar characteristics can be difficult to achieve using a conventional mechanical spring. A model of the vibration generator is described and is based on an electrical equivalent network. Analytical expressions are used to determine the network components as functions of the generator geometry and material properties. These are validated through experimental measurements taken from a prototype generator. The model is to be used in the design optimization of such generators.
Translated title of the contributionA model of a magnetically sprung vibration generator for power harvesting applications
Original languageEnglish
Title of host publicationIEEE International Electric Machines and Drives Conference, IEMDC 2007, May 3-5 2007, Antalya, Turkey
PublisherIEEE Computer Society
Pages725 - 730
Number of pages6
ISBN (Print)1424407435
DOIs
Publication statusPublished - 2007

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