Simulação de circuito transistorizado para colheita de energia de vibrações

Abstract

This work presents the evaluation of the computational model of a transistorized circuit for the recovery of mechanical energy generated by vibrations present in the environment using piezoelectric materials. This process of converting energy that would be wasted into usable electrical energy is called energy harvesting. Due to the high capacitive reactance of the piezoelectric material and the typical low frequency operation for vibration harvesting systems, a transistorized synthetic inductor electronic circuit configuration was used to achieve large inductances to drain the reactive energy. Through this arrangement and in order to analyze this type of generation computationally, the presente work contributed by demonstrating the formation rule of the transistorized synthetic inductor and investigated the proposed circuit applied in the extraction of energy from isolated pulses, pulses and sine waves of 10 and 100Hz and, talking about the results, it was possible to extract energy from the evaluated topology, as well as mapping the conditions in which this energy is better accumulated by the system. In addition, it was possible to extrapolate possibilities for future work, especially with regard to the coupling of circuits for energy storage, highlighting the potential of this research line.