Research Article
Asian Journal of Engineering, Sciences and Technology - Volume 7, Issue 2 2017
By Iftikhar Ahmad, Farid Ullah Khan
Keywords: Electromagnetic, Energy harvesting, Multimode resonator, Planar movable coil, Vibration

multi-mode vibration based electromagnetic type energy harvester has been illustrated in this work. The harvester consists of two planar movable coils (PMCs), acrylic spacers and permanent magnets placed on a membrane (latex). Fabrication and experimentation of the prototype is presented. The PMC and acrylic spacers are fabricated through computer numerical control (CNC) machine. The prototype is characterized at a frequency sweep of 5-200 Hz under various acceleration levels. The device has three resonant frequencies of 73 Hz, 100 Hz and 123 Hz at relatively higher acceleration level of 3 g. Single PMC of the prototype at resonant frequency (first) of 73 Hz and a vibration level of 3 g yields a voltage amplitude of 16.6 mV and output power of 65.24 W.