Automatic Voltage Regulation

1. Automatic voltage egulationAutomatic voltage egulation
• Principle
• Basic mode of operation
• Manual control system
• Auto control system

2. Basic operation of AVRBasic operation of AVR

3. Problem due to voltageProblem due to voltage
sags in AVRsags in AVR

4. Type of AVRType of AVR
Tap changing transformerTap changing transformer
Saturable reactor regulatorsSaturable reactor regulators
Motorized variacMotorized variac
Cvt’s/ferroresonant transformersCvt’s/ferroresonant transformers
Electronic voltage regulatorElectronic voltage regulator
Phase controlled regulatorsPhase controlled regulators

5. 1.Tap changing transformer

6. 2.Saturable reactor regulators

7. 3.Motorized variac

8. 4.Cvt’s/ferroresonant transformer

9. 5.Electronic voltage regulators

10. 5.Electronic voltage regulators