Microsystem Technologies

, Volume 13, Issue 11–12, pp 1637–1645 | Cite as

Scaling effects for electromagnetic vibrational power generators

  • Terence O’DonnellEmail author
  • Chitta Saha
  • Steve Beeby
  • John Tudor
Technical Paper


This paper investigates how the power generated by electromagnetic based vibrational power generators scales with the dimension of the generator. The effects of scaling on the magnetic fields, the coil parameters and the electromagnetic damping are presented. An analysis is presented for both wire-wound coil technology and micro-fabricated coils. The power obtainable from electromagnetic generators in the dimension range of 1–10 mm is calculated. It is shown that the theoretical maximum power scales with the cube of the dimension. It is also shown that the high coil resistance associated with micro-coils severely restricts the power, which can be extracted.


Load Resistance Flux Linkage Squeeze Film Surface Loss Flux Gradient 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



The authors wish to acknowledge funding for this work under the European Union Framework 6 STEP project VIBES, project reference 507911.


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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • Terence O’Donnell
    • 1
    Email author
  • Chitta Saha
    • 1
  • Steve Beeby
    • 2
  • John Tudor
    • 2
  1. 1.Tyndall National InstituteCorkIreland
  2. 2.School of Electronics and Computer ScienceUniversity of SouthamptonSouthamptonUK

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