Maximum energy harvesting from vibration-based electromagnetic microgenerator using active damping

摘要

A power electronic scheme for active damping of electromagnetic microgenerators is presented.The scheme utilises a direct AC-DC converter capable of optimum energy harvesting from low-voltage generators. The converter also boosts the low AC generator voltage to a high DC voltage required by electronic loads (2-3.3 V). Variable damping of the resonance-based electromechanical system is demonstrated. The ability of the converter to offer an adjustable resistive load to the micro-generator and harvest maximum energy by changing the duty cycle of the converter is validated through experimental results.