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# Speed Control Of DC Motor

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### Speed Control Of DC Motor

1. 1. PROJECT GUIDE : PROF. RAJESH KANUNGO PROF. ABINASH MOHAPATRA GROUP MEMBERS SAMPAD KUMAR PANDA SIDDHARTHA KUMAR MUDULI SANGRAM KESHARI BHUYAN SARAT CHANDRA MEHER
2. 2. TITLE SLIDE NO. `  AIM OF THE PROJECT 03  LITERATURE SURVEY 04  LAYOUT 11  SIMULATION RESULTS 13  FUNCTIONAL BLOCK DIAGRAM 16  CIRCUIT DIAGRAM 17  REQUIREMENTS TABLE 18  FUTURE SCOPE 19  CONCLUSION 20  REFERENCE 21 2
3. 3.  This project aims at achieving smooth speed control of dc motor in wide range of application.
4. 4.  Previously Ward-Leonard Method was used.  It has very smooth control over speed.  But its cost is high, more Losses and Less efficiency.  So power electronic devices are used.  We can use Thyristors (Controlled Rectifier) or Converters.
5. 5. •Anyos Jedlik was first to experiment with DC motors in 1827. •In 1871, Zénobe Gramme’s design of a dynamo was accidentally connected to a second dynamo that was producing a voltage which made dynamo start to turn and do work. •DC motor works on the principle that, “When a current carrying conductor is placed in a magnetic field it experiences a torque”. • The direction of rotation of the motor armature can be determined from this diagram.
6. 6. aame RIKV   a e a e m I K R K V    e a K T I  aa RIEV meKE  ae IKT    T K R K V e a e m 2    6
7. 7. • There are 3 methods of speed control: o Field Control o Armature control o Supply Voltage Control • Field control can be done by:- o Field Divertor o Tapped field Control o Parallel field control • Armature control can be achieved by:- o Armature Resistance control o Shunted Armature control o Armature terminal Voltage control •Supply voltage can be achieved by:- o Ward Leonard Method o Power Electronics converter o Controlled Rectifier 7
8. 8. VOLTAGE CONTROL METHOD WARD LEONARD METHOD CONTROLLED RECTIFIER CONVERTER
9. 9. 10
10. 10. LAYOUT SIMULATION HARDWARE POWER MODULE CONVERTER
11. 11. 13
12. 12. 14
13. 13. 18 SL NO NAME OF COMPONENT QUANTITY SPECIFICATION COST WHERE TO PURCHASE 1 STEP DOWN TRANSFORMER 01 15 V Rs. 65/- KALINGA ELECTRONICS 2 DIODE 10 IN4007 Rs. 100/- KALINGA ELECTRONICS 3 IC SG3425(PWM MODULE) 01 12 V DC ELECTRONICS WORLD 4 MOSFET 6N90 01 Rs. 120/- KALINGA ELECTRONICS 5 FERRITE CORE 01 CYLINDRICAL Rs. 30/- 6 RESISTANCE BOX 01 QUARTER OHM Rs. 35/- KALINGA ELECTRONICS 7 CAPCITANCE BOX 01 Rs. 50/- KALINGA ELECTRONICS 8 CONNECTING WIRES KALINGA ELECTRONICS 9 COPPER WIRE 05 0.5MM, 1MM, 2MM Rs. 60/- 10 DC MOTOR 01 200 RPM Rs. 250/- KALINGA ELECTRONICS
14. 14.  This can project can be upgraded using some advanced technique to increase the efficiency and performance of the motor.  For this purpose we can use two methods:- • Using SOFT SWITCHING technique to increase the efficiency. • Using PI controllers to smoothen the voltage applied to the motor.
15. 15.  The range of speed control and robust working adds to the usefulness of the DC motors.  As DC power can be easily transported, DC motor contributes a lot to traction drives.  With the contribution of converter the efficiency and speed control ranges is enhanced to great extent.  Even its utility can be multiplied using better power electronic component.
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Aug. 29, 2018

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