1. Controlled Rectifiers

2. Thyristor Thyristors have three states: Reverse blocking mode Forward blocking mode Forward conducting mode

3. Characteristics of Thyristors +v-+v- i

4. Analysis of the Rectifier Valves are numbered in order of firing. L C =0

5. Valve Switching Sequence with no Ignition Delay

6. Analysis of the Rectifier with no Ignition Delay

7. Average DC Voltage

8. Analysis of the Rectifier with Ignition Delay

9. Current and Phase Relations Variation of phase displacement between voltage and current of phase a with delay angle

10. Current and Phase Relations Variation of phase displacement between voltage and current of phase a with delay angle

11. Average DC Voltage

12. Current and Phase Relations Variation of phase displacement between voltage and current of phase a with delay angle