Experimental Analysis of Single Phase Full Wave Controlled Rectifier For DC Motor Shunt Control

Abstract

DC shunt motors are a type of electric motor that has the ability to regulate speed, so it is often used in applications that require steady state speed stability and fast transient response. This characteristic is especially important in systems that require high precision, fast response, and the ability to adapt to changes in load. This study aims to analyze the relationship between motor speed and reference speed, as well as the relationship between motor speed and input current and voltage. The research approach was carried out using PSIM simulation software. The first step involves creating a single-phase full-wave controlled rectifier circuit model, designed using the built-in components on the PSIM. Furthermore, the firing angle on the gating block is gradually changed to evaluate its effect on the performance of the DC shunt motor. Data analysis was carried out by descriptive method to obtain functional relationships between the observed parameters. The results showed that the speed of the motor increased significantly when the ignition angle was small, while the decrease in speed occurred at a larger ignition angle. In the no-load condition (0 Nm of torque), this pattern looks consistent. In contrast, at a torque load of 5 Nm, the speed of the motor shows an inversely proportional relationship with the change in the ignition angle. These findings make a significant contribution to the development of electric motor speed regulation systems, especially for industrial applications that require controlled rectifier-based power control.