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Single-Phase Uncontrolled Rectifiers Chp#5

Single-Phase Uncontrolled Rectifiers Chp#5. Introduction. Rectification is a process that converts AC into DC . In diode based rectifiers, output voltage cannot be controlled. So they are termed as uncontrolled rectifiers . Rectifier may be n-pulse type.

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Single-Phase Uncontrolled Rectifiers Chp#5

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  1. Single-Phase Uncontrolled Rectifiers Chp#5

  2. Introduction • Rectification is a process that converts AC into DC. • In diode based rectifiers, output voltage cannot be controlled. So they are termed as uncontrolled rectifiers. • Rectifier may be n-pulse type. Number of pulses in any rectifier configuration is given by: Pulse number=number of load current (or voltage) pulses during one cycle of ac source voltage. • Diodes are assumed to be ideal.

  3. 5.2 Half-Wave Rectifier(One-Pulse Rectifier) (a) With resistive load

  4. (B) With an Inductive (RL) Load

  5. (C) With RL Load and Freewheeling Diode

  6. 5.3FULL-WAVE CENTER-TAPPED TRANSFORMER RECTIFIER (Two-Pulse Rectifier)

  7. Circuit Symbol During positive half-cycle Durinig negative half cycle

  8. Voltage and Current waveforms

  9. With Inductive (RL) Load

  10. Input Supply Voltage Output Voltage Current through D1 Current through D2 Output current Voltage across D1 Voltage across D2

  11. Current waveforms for highly inductive Load

  12. 5.4 Full-Wave Bridge Rectifier

  13. With a Resistive Load

  14. With an Inductive Load

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