Description
ABSTRACT
This project is proposed to control the speed of the three-phase induction motor by using the Arduino controller. The Arduino controller is used to produce the pulse width modulation (PWM) signals. And the motor speed is controlled by using the driver and three-phase inverter circuits. And also this project has reduced the harmonics and switching losses of the circuit. In this project have two switches are used to increment and decrement the speed of the Three Phase Induction Motor. The speed variation can be viewed in the tachometer.
BLOCK DIAGRAM
DETAILS FOR 3 PHASE INVERTER BOARD
The inverter card comes with an inbuilt full bridge rectifier and filter capacitor. 6 No?s of IRFP250 MOSFETs are mounted with a Heat sink. The output of the inverter is terminated with 3 pin PTB Connector. The user should get soldered on the backside of the board for the gate pulse interface.
?6 No?s of IRFP250 MOSFET are mounted with proper Heat sink
?5A Bridge Rectifier with DC Filter Capacitor (1000uF/250V)
?3 Pin PTB Connector provided to connect Three Phase Induction Motor
INVERTER SCHEMATIC DIAGRAM
INVERTER CIRCUIT BOARD
SPECIFICATION
?6?No?s of IRFP250 MOSFET with Heat sink
?Input Voltage 100V/AC/50Hz
?Operating Frequency 25 kHz
?Input and Outputs are terminated with PTB Connectors
TLP 250 DRIVER BOARD
SPECIFICATION
?6?No?s Opto-Isolated Gate Drive
?Input Voltage 12V/AC/50Hz
?Operating Frequency 25 kHz
?All input and outputs are terminated with RMC Male Connectors
INCREMENT/DECREMENT SWITCH INPUTS
INTERRUPT PINS
|
KEYS |
FUNCTION |
DATA PIN |
ARDUINO CONTROLLER |
|
KEY 1 |
INCREMENT |
DATA 1 |
Pin 2 |
|
KEY 2 |
DECREMENT |
DATA 2 |
Pin 3 |
PWM OUTPUTS
|
PWM OUTPUTS |
ARDUINO CONTROLLER |
POWER SWITCH (As in inverter schematic diagram) |
|
PWM 1 |
4 |
Q1 |
|
PWM 2 |
5 |
Q6 |
|
PWM 3 |
6 |
Q3 |
|
PWM 4 |
7 |
Q2 |
|
PWM 5 |
8 |
Q5 |
|
PWM6 |
9 |
Q4 |
MOTOR OUTPUT
|
INVERTER BOARD |
MOTOR COLOUR |
|
PHASE 1 |
RED |
|
PHASE 2 |
YELLOW |
|
PHASE 3 |
BLUE |
CONNECTION DIAGRAM
OUTPUT WAVEFORMS
Comparison of two Pulses
Phase to Phase Output of Inverter?
Comparison of Inverter Output
Three Phase Induction Motor Projects
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