GATE EE 2014 Set 2 — Question 63
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Power Electronics → AC-DC Converters → Power & Distortion Factor
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Question
A fully controlled converter bridge feeds a highly inductive load with ripple free load current. The input supply () to the bridge is a sinusoidal source. Triggering angle of the bridge converter is . The input power factor of the bridge is __________.
Correct answer
0.74 to 0.82
Solution
For a single-phase fully controlled bridge converter with a highly inductive load (ripple-free load current ):
1.Input Current Waveform: The input current is a square wave with amplitude and a width of radians per half-cycle.
2.RMS Value of Input Current ():
3.Fundamental Component of Input Current ():
The RMS value of the fundamental component is given by:4.Displacement Factor (DF):
The fundamental component lags the supply voltage by the firing angle .5.Distortion Factor (CDF):
6.Input Power Factor (IPF):
The calculated value is approximately , which falls within the specified range of to .Continue learning with Success Tracker
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