Electromagnetic generators
Recovery of the energy of mechanical vibrations

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RE135 V1 Research and innovation

Electromagnetic generators
Recovery of the energy of mechanical vibrations

Authors : Claire JEAN-MISTRAL, Skandar BASROUR

Publication date: January 10, 2010 | Lire en français

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5. Electromagnetic generators

5.1 Operating principle

Electromagnetic generators, on the other hand, are based on electromagnetic induction, a principle demonstrated by Faraday. The electromotive force can be generated by the relative movement between a coil and a magnet creating a fixed magnetic field, or by a temporal variation in the magnetic field.

The value of the voltage generated is determined by :

em=dΦdt( 11 )
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