Análise da resposta forçada e natural de circuitos RLC

Abstract

A resonance electrical circuit, also known as RC, RL or RLC circuit, because it is composed by resistors, inductors and/or capacitors, is widely used in different areas of electrical engineering, such as the analysis of this circuit, as well as modeling and study of other systems through an equivalent RLC circuit, such as electric machines, for example. Not only electrical systems or circuits, but a large number of dynamic systems can be modeled by ordinary differential equations similar to those obtained in the RLC circuit, including mechanical and thermal systems. Therefore, the study and analysis of these circuits is of fundamental importance in the formation of an engineer, especially of the electrical engineer. This work presents the theoretical analysis of the transient in RLC circuits in time and frequency domains, as well as the use of the Laplace transform to solve the temporal analysis. The obtained equations are compared with the results of simulations in a commercial software, Proteus, validating the presented results. In this work a simple method for updating the values of the available inductors in the laboratory is also proposed.