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Advantages of Three-Phase Rectifiers over Single-Phase Rectifiers

Advantages of Three-Phase Rectifiers over Single-Phase Rectifiers. Higher output voltage for given input voltage. Lower amplitude ripples i.e., output voltage is smoother Higher frequency ripples, simplifying filtering

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Advantages of Three-Phase Rectifiers over Single-Phase Rectifiers

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  1. Advantages of Three-Phase Rectifiers over Single-Phase Rectifiers • Higher output voltage for given input voltage. • Lower amplitude ripples i.e., output voltage is smoother • Higher frequency ripples, simplifying filtering (lower size of filter circuit parameters because of higher ripple frequency) • Higher overall efficiency 2

  2. Three-Pulse Rectifiers Three-Phase Half-Wave Rectifiers 3

  3. Circuit Diagram Load voltage waveforms 4

  4. Current Waveforms 5

  5. 6

  6. Voltage across diodes VD1 7

  7. VD2

  8. VD3

  9. With Inductive Load 10

  10. THREE-PHASE FULL-WAVEBRIDGE RECTIFIERS Six-Pulse Rectifiers

  11. Equivalent circuits of six-pulse rectifier

  12. Diode and Line current waveforms

  13. With Inductive (RL) Load

  14. TWELVE-PULSE RECTIFIERS

  15. Circuit Diagram

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