AN ELECTROMAGNETIC MICRO POWER GENERATOR FOR LOW FREQUENCY ENVIRONMENTAL VIBRATIONS BASED ON THE FREQUENCY UP-CONVERSION TECHNIQUE


Sari I., Balkan T., KÜLAH H.

22nd International Conference on Micro Electro Mechanical Systems (MEMS), Sorrento, Italy, 25 - 29 January 2009, pp.1075-1078 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/memsys.2009.4805573
  • City: Sorrento
  • Country: Italy
  • Page Numbers: pp.1075-1078

Abstract

This paper presents an electromagnetic (EM) vibration-to-electrical power generator, which can efficiently harvest energy from low-frequency external vibrations by using frequency up-conversion. The generator can effectively scavenge energy from low frequency environmental vibrations of 70-150 Hz and generates 0.57 mV voltage with 0.25 nW power from a single cantilever at a vibration frequency of 95 Hz. The fabricated generator size is 8.5 x 7 x 2.5 mm(3) and a total number of 20 serially connected cantilevers have been used to multiply the generated voltage and power. The performance of the generator is also compared with a same sized traditional magnet-coil type generator to prove its effectiveness.