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Controlled Rectifiers

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Controlled Rectifiers

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  1. Controlled Rectifiers

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

  3. Characteristics of Thyristors + v - i

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

  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