DESIGN OF BLDC MOTOR BASED POSITION CONTROL DRIVE

Abstract

The objective of this work is to analyse an accurate position control of the BLDC motor using Field Oriented Control (FOC) algorithm. The BLDC motor, owing to its operational principle, boasts faster responses and higher torque, along with reduced noise, fewer spark-related issues, and lower maintenance requirements than classical DC motors. Field-Oriented Control (FOC) is an advanced control algorithm initially developed and utilized for induction and synchronous motor drives. By implementing a suitable coordinate system transformation, it becomes feasible to autonomously regulate the machine's flux and torque, akin to controlling a DC motor. To control its position accurately, you need to manipulate the stator currents and voltages. The FOC, also known as vector control, is a sophisticated control algorithm used to control BLDC motors. Field- Oriented Control (FOC) allows for the individualistic control of torque and flux. It offers a rapid dynamic response, exceeding the demands of applications such as washing machines. FOC eliminates torque ripple and enables precise motor control, delivering smooth and accurate performance across a wide range of speeds. In this project we use the FOC algorithm to identify the position control of BLDC motor. FOC delivers superior dynamic response in contrast to traditional control techniques. After performing the circuit in MATLAB and stimulating the circuit Analyze a waveform/ output. Before implementing the control system in a real BLDC motor, it is essential to simulate and test it thoroughly. Tools like MATLAB/Simulink are often used for simulation. KEYWORDS: BLDC; FOC; Hall effect sensor; Motor; Position