Auto Control of three phase Induction motor

SPECIFICATIONS

Title of the project         :           Auto Control of three phase Induction motor                                                                       

Domain                                    :           Embedded Systems Design

Software                                  :           Assembler, Proload

Microcontroller                      :           89S52 CISC Micro Controller

Power Supply                          :           +5V, 500mA Regulated Power Supply

Display                                      :           a) LCD,  HD44780 16-character, 2-line (16X2)

                                                            b) LED              5mm

Crystal                                       :           11.0592MHz

Sensors                                     :           Lm393, transformers for each phase

Applications                             :           Engg. colleges, factories etc

ABSTRACT

This Project can be used with the three phase Induction motors. The circuit will take the full control of the motor and it will protect the motor from several faults such us over voltage and under voltage and the circuit will switch on the motor under safety conditions.

The circuit was fully controlled by the microcontroller and the microcontroller will continuously monitors the voltages of the three phase and if the voltage goes abnormal then it will switch off the motor until they are normal. All the conditions are displayed it over the LCD display. In our project we are using the popular 8 bit microcontroller AT89S52. It is a 40 pin microcontroller.

This project uses regulated 5v, 500mA power supply. 7805, a three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac output of secondary of 230/12v step down transformer.

BLOCK DIAGRAM