Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Université Savoie Mont Blanc

Centre National De La Recherche Scientifique

Korea Electronics Technology Institute

Université Paris—sud

Adrien Badel

Gaël Pillonnet

Franck Badets

Elie Lefeuvre

Adrien Morel

Romain Grezaud

Nicolas Goux

Chan Sei Yoo

Pierre Gasnier

Fabien Formosa

A device for recovering or dampening vibratory energy from a mechanical resonator, comprising:

Device for recovering or damping the vibratory energy of a resonant mechanical element

The present disclosure relates to a method of tuning an electric charge extraction circuit of a vibrational energy harvester having a mechanical resonator, the method comprising varying, during a first phase, first and second parameters (&#x3c8;,&#x3c8;) of the electric charge extraction circuit based on detected harvested power (P), each of the first and second parameters (&#x3c8;,&#x3c8;) influencing the amount of damping of the mechanical resonator and at least the first parameter (&#x3c8;) influencing the resonance frequency of the mechanical resonator, wherein the first and second parameters (&#x3c8;,&#x3c8;) are varied during the first phase such that the amount of damping remains constant or varies by less than a first significant amount and the resonance frequency reaches a final level.

Circuit and method for frequency tuning of a vibrational energy harvester

A piezoelectric generator including: a piezoelectric element; a circuit for shorting and placing in open circuit the piezoelectric element; and an inductive converter.

Piezoelectric generator

Growing community of inventors

Chambery, France

Adrien Badel