PHASE SEQUENCE DETECTION
AND CONTROLLED POWER SUPPLY
Under the Guidance of:
Mr. P.K.Karjee
By
Subhasis Padhy(110101EER043)
Priyanka Patnaik(110101EER013)
Sanant Sangram Behera(110101EER055)
A Somnath Achary(110101EER025)
Pravat Kumar Biswal(110101EER072)
Abhin Kumar Jena(110101EER086)
Circuits
Continue…
Continue….
ENTIRE SETUP
INTRODUCTION
• As we know that in three phase supply there are three
phases i.e. R Y B, it is necessary that these three
phases are in correct order.
• Phase sequence detection system has been
specifically designed keeping in mind an essential
point of detection of correct phase.
• It is useful to connect any machine to the supply.
OBJECTIVE
• The main purpose of this project is to detect the phase
sequence of any machine which works on three phase
supply.
• The other prospect of our topic is to control the
supply voltage.
• To control the system from under voltage and over
voltage.
BLOCK DIAGRAM
ASTABLE
MULTIVIBRATOR
R
Y
B
R
Y
B
DECADE
COUNTER
PHASE SEQUENCE
DETECTOR
LED
ARRAY
FLIP
FLOP
BLOCK DIAGRAM OF PHASE SEQUENCE DETECTION
CONTINUE..
BLOCK DIAGRAM OF CONTROLLED POWER SUPPLY
COMPONENTS REQUIRED
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IC4017-1
IC4013-1
ICLM324-3
Zener diode-(4.7W)-5
Relay-3(12V)
Transistor BC109-6, BC547-6
LED-20
Battery (6V-12V)-1
Push-on-switch-1
Variable Resistance(10K)-2, (47k)-6
Different values of resistances are:1K, 1.5K, 8.2K, 10K, 22K, 56K, 82K, 390K,
Different values of capacitances are:1 micro, 470 micro farad.
Transformer-3
ASTABLE MULTIVIBRATOR
• Astable multivibrator is used to provide clock pulses to the
counter.
• If the frequency is high the LED array ring is glowing too fast
so that we can not find that whether the LED is glowing or
not.
DECADE COUNTER AND LED
ARRAYS
• IC 4017 represents decade counter which is used to run the led’s in
a sequence.
• We are using 20 LED’s, in which 10 LED’s are green and the rest 10
LED’s are red.
PHASE SEQUENCE SENSOR & FLIP
FLOP
• In the phase sequence and controlled power supply system
the detection of phase occurs by the use of transistor.
• The property of D- flip flop is- The output is same as the
input, means that if input is 1 than, output is also 1.
PHASE SEQUENCE DETECTOR
• A zener diode may function as a voltage regulator by
acting as an accessory load, drawing more current from
the source if the voltage is too high, and less if it is too
low.
ABOUT THE PROJECT
• It consists of IC4013 which is a D-flip flop and IC4017 which is a decade
counter is used to run the LED’s in sequence.
• There are 20 LED’s , in which 10 LED’s glow in the clockwise direction
when the phase sequence is correct and the rest 10 LED’s glow in the anticlockwise direction when the phase sequence is incorrect.
• The green LED’s glow when the phase sequence is correct and the red
LED’s glow when the phase sequence is incorrect.
• The decade counter counts 10 LED’s in a sequence.
• The astable multivibrator section provides clock pulses in 10 to 1000Hz
range to the decade counter and the LED array section.
• The output of any three phase machine is fed to the input of this system.
Now in the circuit there is arrangement of two transistor and the out put
of the transistor is fed into the IC4013.
OVER AND UNDER VOLTAGE
PTOTECTION
CONTINUE……..
• In case of over voltage, the voltage at the non-inverting
terminal of op-amp rises but the voltage at inverting
terminal remains at the same voltage due to zener diode.
• This causes relay to energize and disconnect the supply.
• In case of under voltage, the voltage at the inverting
terminal falls below the voltage at the non-inverting
terminal.
• This energizes the relay which disconnects the supply
and protects the system from under voltage.