Research of the Horizontal Pendulum base Harvester for Low Energy Density Systems

Abstract

A proposed energy harvesting system intended to convert ambient mechanical vibration into electrical energy to power autonomous low power electronic systems. The device operation based on non-holonomic vibration system, called horizontal pendulum. This design allows developing a system without natural frequency and having possibility to excite from chaotic vibrations. Harvester uses swinging type generator with permanent magnets and built using 3-phase system followed by rectifier and energy collection system. Experimental research performed on original setup, which consists from horizontal pendulum, supported by spring and swinging rotor generator. Both elements were modelled in advance using finite element method (FEM) modeling features. Finally, results of the research presented in graphical form: as voltage output in open circuit or loaded by permanent resistance. At the end of paper conclusions on obtained results and peculiarities of research drawn.