Wideband, low-frequency springless vibration energy harvesters: part II. (19th October 2016)

• Record Type: Journal Article
• Authors: Bendame, Mohamed; Abdel-Rahman, Eihab; Soliman, Mostafa
• Is Part Of: Journal of micromechanics and microengineering. Volume 26:Number 11(2016:Nov.)
• Publication Date: 2016-10-19
• Subjects: energy harvesting -- low frequency -- wideband -- electromagnetic -- impact; Microelectromechanical systems -- Periodicals; Micromechanics -- Periodicals; 621.38105
• DOI: 10.1088/0960-1317/26/11/115022
• Languages: English
• ISSNs: 0960-1317

Abstract

Abstract: This paper concludes a two-part investigation of a novel architecture for vibration energy harvesting (VEH), the springless VEH. In this part, we study vertical springless electromagnetic VEHs where the direction of motion is aligned with the gravitational field. Experimental results show the existence of three topologies in the response of vertical springless VEHs; linear, single-impact, and double-impact. A model, encompassing all three topologies, was developed and validated by comparison to experimental results. We found that vertical springless VEHs demonstrate low frequency harvesting (<20 Hz), widebeand harvesting (bandwidths up to B W = 11.2 Hz), and an optimal output power of P = 7.52 mW at a base acceleration of 0.6 g. While horizontal springless VEHs typically offer more output power, the single-impact regime of the vertical springless VEHs offers the simultaneous advantages of wider harvesting bandwidths at lower operating frequencies.