Technical Proceedings of the 2011 Clean Technology Conference and Trade Show

Clean Technology 2011

Chapter 4: Energy Storage & Novel Generation

Authors:
B. Ahmed Seddik, G. Despesse, E. Defay
Affilation:
CEA/Leti-Campus, FR
Pages:
192 - 195
Keywords:
mechanical energy harvester, active damping, wideband resonators
Abstract:
Mechanical energy harvesters ensure an important electromechanical coupling when their natural frequency matches the input frequency. Nevertheless, in many situations the driving frequency is not known or it might change over time. In that case, the output power falls dramatically when the input frequency is not equal to the natural frequency of the harvester. It would be more advantageous to design a system able to operate over a wide bandwidth. The aim of our work is to broaden the peak resonance of the resonator. We propose to do this by introducing an additional process allowing more transfer of mechanical energy from the source to the converter. The amplification of the transferred energy ensured by this process is achieved by gathering the resonance phenomenon conditions.
Increased Bandwidth of Mechanical Harvester
ISBN:
978-1-4398-8189-7
Pages:
438