Title :
Design and fabrication of a new system for vibration energy harvesting
Author :
Despesse, G. ; Jager, T. ; Chaillout, Jean-Jacques ; Leger, J.-M. ; Basrour, Skandar
Author_Institution :
CEA-DRT, Grenoble, France
Abstract :
Global simulations, designs and characterisations of a broadband vibration energy scavenging system are here reported. High damping electrostatic conversion structures have been investigated. Mathematical analytical models have been performed and confronted with ANSYS simulations. A scavenging electronics has also been developed: taking in account ohmic, capacitive and inductive losses, the global conversion efficiency has been calculated. Finally, a macro and a micro resonant structure tuned to 50 Hz have been realized. A scavenged power of 1 mW is already available on the macro structure under a vibration amplitude of 90 μm at 50 Hz. The corresponding global conversion efficiency is about 60 % which is in good agreement with mechanical and electrical simulations.
Keywords :
damping; direct energy conversion; electrostatics; power electronics; vibrations; 1 mW; 50 Hz; 90 micron; broadband vibration energy scavenging system; capacitive losses; global conversion efficiency; high damping electrostatic conversion structures; inductive losses; macro resonant structure; micro resonant structure; ohmic losses; scavenging electronics; vibration energy harvesting system; Acceleration; Analytical models; Damping; Electrostatics; Fabrication; Frequency; Iron; Low power electronics; Resonance; Vibrations;
Conference_Titel :
Research in Microelectronics and Electronics, 2005 PhD
Print_ISBN :
0-7803-9345-7
DOI :
10.1109/RME.2005.1543034