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The frequency of ripple in the output voltage of a three phase controlled bridge rectifier depends on

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  1. firing angle
  2. load inductance
  3. load resistance
  4. supply frequency

Answer (Detailed Solution Below)

Option 4 : supply frequency
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The frequency of ripple in the output voltage of a three-phase controlled bridge rectifier depends on the supply frequency. The output frequency is

f0 = n fS

Where n is the number of pulses in the output of the converter and fs is the supply frequency

Note: Ripple factor depends on the firing angle, load inductance, and resistance.
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More Effect of Source Impedance on Converters Questions

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More Phase Controlled Rectifiers Questions

Q1.A fully controlled single-phase bridge rectifier is feeding a highly inductive load such that the load current is continuous. If the firing angle is set at 120°, then the average load voltage is ________ and the load current is ________.
Q2.For the same load, if the phase sequence of a three-phase supply changes, then:
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Q7.The source voltage for the circuit shown is 220 V and the load inductance is 220 μH. If the switch is closed for a time t1 = 100 μs, then the load current will be:
Q8.A single phase full converter delivers power to a resistive load R. For an AC source voltage of Vs, the average output voltage Vo is given by (where α is firing angle):
Q9.Compute the peak inverse voltage of thyristor connected in three-phase, six-pulse bridge rectifier having input voltage of 415 V. Consider the voltage safety factor to be 2.1.
Q10.The capability of a power supply to maintain constant voltage or current at the output despite change in supply's load is known as _______.
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