Optimization of an Electromagnetic Energy Harvesting Device

Chitta Saha, T. O'Donnell, H. Loder, S. Beeby, J. Tudor

Research output: Contribution to journalArticle

133 Citations (Scopus)


This paper presents the modeling and optimization of an electromagnetic-based generator for generating power from ambient vibrations. Basic equations describing such generators are presented and the conditions for maximum power generation are described. Two-centimeter scale prototype generators, which consist of magnets suspended on a beam vibrating relative to a coil, have been built and tested. The measured power and modeled results are compared. It is shown that the experimental results confirm the optimization theory.
Original languageEnglish
Pages (from-to)3509 - 3511
JournalIEEE Transactions on Magnetics
Issue number10
Publication statusPublished - 2006

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  • generators and resonance
  • Displacement
  • energy conversion


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