input current of single phase controlled bridge rectifier

Discussion in 'Homework Help' started by cpleng7, Mar 19, 2011.

  1. cpleng7

    Thread Starter Active Member

    Dec 18, 2008
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    May I know how to calculate input current for single phase controlled bridge rectifier?
     
  2. t_n_k

    AAC Fanatic!

    Mar 6, 2009
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    It's not that simple, since the current depends on the type of load. For a purely resistive load then a possible solution would be

    I_{rms}=I_m \sqrt{\frac{1}{2}-\frac{\theta}{2 \pi}+\frac{sin(2 \theta)}{4 \pi}}

    where Im=peak current & θ= firing delay angle
     
  3. cpleng7

    Thread Starter Active Member

    Dec 18, 2008
    120
    0
    this Irms formula not finding the Irms for the output current?
     
  4. t_n_k

    AAC Fanatic!

    Mar 6, 2009
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    782
    The RMS values for load current and input current would be the same.
     
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