Efficiency Increase of Vibratory Energy Harvesting Circuits by Multi-Harvester Strategy Design

Javier Ortiz; Josu Etxaniz; Nieves Murillo; Joseba Zubia; Gerardo Aranguren Aramendia

doi:10.20944/preprints201703.0140.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 17 March 2017 / Approved: 17 March 2017 / Online: 17 March 2017 (16:58:48 CET)

Since the requirements in terms of power of the electronic applications range wide, the developed Energy Harvesting (EH) systems limit their availability to the less power demanding applications. However, this paper focuses on increasing the energy levels collected in the EH system so that it can be included in more demanding applications in terms of power. Therefore, an electronic system capable of grouping many single harvesting channels into one single system is analyzed in this paper. This multi-harvester electronic system is able to manage efficiently the energy collected by multiple vibratory transducers. The paper includes a comparison of its performance against some of the State-of-the-Art EH energy management circuits that interface the transducers. The method employed to demonstrate the intrinsic efficiency of each of the electronic circuits tested was based on experimental tests, where the average power transferred from several identical and simultaneous electric sources to a single storage element was measured. It was found out that only one energy management circuit was able to increase the transferred energy in a linear way while new input electric sources were added.

Energy Harvesting; energy management circuit; kinetic energy; vibratory transducer

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Efficiency Increase of Vibratory Energy Harvesting Circuits by Multi-Harvester Strategy Design

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