MICROCONTROLLER BASED SPEED CONTROL OF BLDC WITH BOOST CONVERTER

the objective of this dissertation work is to control the speed of the brushless Permanent magnet DC motor with the help of microcontroller. Now days every industry becomes automated industry. To make the industry automation the equipment and machineries should be controlled automatically. In this work, the design is to control the BLDC motor automatically through microcontroller. So control of the machineries which involving this motor can be done accurately. By making the industrial automation production rate can be increased. BLDC machines are used in applications of vital importance such as aerospace industry, tool drives, actuators and electric vehicle propulsion system. Hence, the necessity for precise control speed is evident and obvious. In this work switches has been interfaced with microcontroller to obtain speed control with clockwise, anticlockwise and braking operation. Here the microcontroller is a flash type reprogrammable microcontroller which is already programmed with an objective. When enter the desired speed to the microcontroller, the microcontroller sends the corresponding digital signal to the drive system. The PMBLDC drive system which involves inherently an inverter controller arrangement which controls the switching speed of the MOSFET using ATMEGA16 micro controller. The motor speed is monitored by digital speedo meter. The microcontroller received measured speed signal and compared with desired entry speed. Through this way BLDC motor is controlled to our desired set speed.