Wednesday, 9 May 2012

INDUSTRIAL DRAFTING FAN IN STEPPED SPEED CONTROL USING BLDC MOTOR ABSTRACT


Model no.1B:

            This project is engaged for industrial drafting fan for applications like textile mills, chocolate factory, and wire drawing units.
A programmable microcontroller from 8051 family is engaged to provide different speed at different times. A low voltage BLDC motor is driven by a power MOSFET in PWM mode drive which is derived from a microcontroller. The duty cycle of the PWM increases progressively in steps.
The power supply consists of a step down transformer 230/12V, which steps down the voltage to 12V AC. This is converted to DC using a Bridge rectifier. The ripples are removed using a capacitive filter and it is then regulated to +5V using a voltage regulator 7805 which is required for the operation of the microcontroller and other components.


For more details about this project, please visit    http://www.efxkits.com/project-kit/microcontroller/1062.html







HARDWARE REQUIREMENTS:

Transformer, Diodes, Capacitors, Resistors, LED’S, Micro controller unit, BLDC motor, IRF530 (MOSFET), Crystal Oscillator.

SOFTWARE REQUIREMENTS:

Keil compiler, Language: Embedded C or Assembly.



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