it is the introduction about drives and Variable Frequency Drives.

1. PRESENTING YOU
CONTROL SCHEMES & BENEFITS OF
VARIABLE FREQUENCY DRIVES
NAME: S. MAHITEJA
R. NO: 160715734015
EEE DEPT.

2. >DRIVE
• A drive operates & controls the speed torque and direction of moving objects

3. >ELECTRIC DRIVE
.Why Electric Drives are needed?

4. >BLOCK DIAGRAM

5. >VARIABLE FREQUENCY DRIVE
• Adjustable speed drive used in Electro-Mechanical drive systems to control AC
motor speed and torque

8. >CONTROLLER

9. >AC DRIVE
• Working Principle
• Drive Operation

10. >DRIVE OPERATION

11. >PRINCIPLE
OPERATION

12. >CONSTANT TORQUE REGION
>CONSTANT POWER REGION

13. >CONTROL SCHEMES
• Scalar Control
• Vector Control
• Direct torque Control

14. >SCALAR CONTROL
• Sinusoidal pulse width modulation
• Six step
• Space vector

15. PWM

16. VECTOR CONTROL

17. DIRECT TORQUE CONTROL

18. >CLASSIFICATION
• Voltage-source inverter (VSI) drive topologies
• Current-source inverter (CSI) drive topologies
• Six-step inverter drive topologies
• Load commutated inverter (LCI) drive topologies
• Cycloconveter or matrix converter (MC) topologies

19. >BENEFITS
• Economical
• Compact in size
• Energy Saving
• Low Maintenance
• Wide Speed Range

20. >CONTROL PERFORMANCE

21. >APPLICATIONS
• In oil &gas industry
• Refrigeration compressor
• Railways

22. >REFERENCE
• Electrical4u.com
• Wikipedia
• Fundamentals of electric drives by dubey

23. Thank You