Impedance modeling of electromagnetic energy harvesting system using full-wave bridge rectifier
Journal
Proceedings of SPIE - The International Society for Optical Engineering
Journal Volume
10164
Date Issued
2017
Author(s)
Abstract
In the conventional model of general vibration energy harvesters, the harvesting effect was regarded as only the electrically induced damping. Such intuition has overlooked the detailed dynamic contribution of practical power conditioning circuits. This paper presents an improved impedance model for the electromagnetic energy harvesting (EMEH) system considering the detailed dynamic components, which are introduced by the most extensively used full-wave bridge rectifier. The operation of the power electronics is studied under harmonic excitation. The waveforms, energy cycles, and impedance picture are illustrated for showing more information about the EMEH system. The theoretical prediction on harvesting power can properly describe the changing trend of the experimental result.
SDGs
Type
conference paper