How to Simulate Electrical Circuits Using MATLAB and Simulink

How to Simulate Electrical Circuits Using MATLAB and Simulink

Simulating electrical circuits is crucial for analyzing their behavior before building physical systems. MATLAB and Simulink are powerful tools that allow engineers to simulate, test, and visualize complex electrical circuits with ease. In this article, we’ll explore how to simulate an RC (Resistor-Capacitor) circuit using MATLAB and Simulink, specifically focusing on the charging process of a capacitor. Understanding an RC Circuit An RC circuit consists of a resistor and a capacitor connected in series to a voltage source. When voltage is applied, the capacitor charges over time, and the voltage across it increases following an exponential curve. The time it takes for the capacitor to charge depends on the resistor value and the capacitor's capacitance. The key equation for the voltage V c ( t ) V_c(t) across the capacitor is: V c ( t ) = V i n ( 1 − e − t R C ) V_c(t) = V_{in} \left(1 - e^{-\frac{t}{RC}}\right) Where: V i n V_{in} ​ is the input voltage. R R is the resistance. C C is the capacitance. t t is time. e e …