Controlling BLDC Motor with Bidirectional Converters with Cyber-Physical Systems

Brushed DC motor has simple speed control techniques. In brushed DC motor, commutation is done by the rotating part which is placed on the rotor and brushes known as commutator. The amount of losses in brushed DC motors is high because of the presence of mechanical parts. But the commutation in brushless DC motors (BLDC) is achieved with the aid of solidstate switches (Electronic commutation). As there is reduction in the losses, the motor’s performance is improved. Hence, brushed motors are being replaced by BLDC motors as they are used in many applications due to its high mechanical and electrical properties. The advantages of BLDC motors are low maintenance, electronic control and high speed therefore finds application in computer peripherals, portable power tools and vehicles such as model planes to automotive. The regulation of a BLDC motor using a bidirectional DC-DC converter is demonstrated in this research work. The output of the DC-DC converter is supplied into the three-phase voltage source inverter (VSI), that powers the motor. PI and Fuzzy controllers are used to regulate the speed of a BLDC motor. The simulation is performed with help of MATLAB R2019b version software and the results are verified. Cyber Physical Systems (CPS) for controlling BLDC motors with bidirectional converters offers several benefits, including improved accuracy, speed, and reliability of motor control, as well as reduced energy consumption and maintenance costs