Vibration Power Generation System using a Piezoelectric Element With a Variable Resistance Control for Optimal Generated Power

This paper deals with an experimental verification of the vibration power generation system using a piezoelectric element with a variable resistance control for optimal generated power. A single-ended primary inductor converter (SEPIC) is used to control the generated power and output voltage. The input-side of the SEPIC performs as a variable resistor for controlling the generated power which is decidced by the load-side power demand from a piezoelectric element. In this paper, the simulation model of the piezoelectric element is constructed for matching V-P characteristics. Moreover. the experimental setup is also constructed to confirm the practicability of the proposed variable resistance control. Simulation and experimental results demonstrate that the generated power of the piezoelectric element can control according to load power demand.