Simulation of DC Generator using MATLAB

Abstract

This paper presents the modeling and analysis of a DC generator in two different ways. The first method keeps the field flux constant by varying the shaft torque of the generator, and the second method holds the shaft torque constant by varying the field flux of the same generator. As mentioned here, the generator’s performance under various conditions was simulated using MATLAB environment, and simulation results demonstrate the feasibility of the proposed system. This study aims to simulate the operation of a DC generator using MATLAB. A DC generator is a device that converts mechanical energy into electrical energy through electromagnetic induction. The simulation aims to model a DC generator’s key components and dynamics, including the armature, field windings, commutator, and load. Various operational parameters, such as the generated voltage, current, and power output, are analyzed under different conditions, such as varying load and field excitation. In the simulation, a basic DC machine model is created, where a prime mover provides the mechanical input, and the electrical output is monitored in terms of voltage and current. The model simulates the voltage generation process, the effects of load variations, and the relationship between speed, flux, and the generated voltage. Key performance parameters such as terminal voltage, output power, and efficiency are analyzed. The effects of armature resistance, load resistance, and field excitation are considered in the simulation to observe how these factors influence the generator’s behavior. MATLAB and Simulink provide an interactive and visual environment to simulate the dynamic behavior of the DC generator.