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The figure below shows two thyristors each rated 500 A (continuous) sharing a load current. current through thyristor T2 is 120 A the current through T1 will be nearly equal to ___ (in A)
    Correct answer is '100'. Can you explain this answer?
    Verified Answer
    The figure below shows two thyristors each rated 500 A (continuous) sh...
    Concept
    Matched-pair SCR’s are generally available for parallel connection, but they are very expensive. With unmatched SCR’s equal current sharing is enforced by adding a low-value resistor or inductor in series with each SCR. Forced current sharing using equal-value resistors is shown in Figure 2. The basic requirement is to make current I1 close to l2, a maximum difference of 20% is accept across SCR2, the value of R can be obtained from.

    I1R + V1 = I2R + V2
    R = (V1 – V2)/(I2 – I1)
    Calculation:
    Voltage across 0.05 ohm resistor  = 120 × 0.05 = 6 V
    ⇒ I2 = 6/0.06 = 100 A
    Current through T1 will be nearly equal to 100  A
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    The figure below shows two thyristors each rated 500 A (continuous) sh...
    Concept
    Matched-pair SCR’s are generally available for parallel connection, but they are very expensive. With unmatched SCR’s equal current sharing is enforced by adding a low-value resistor or inductor in series with each SCR. Forced current sharing using equal-value resistors is shown in Figure 2. The basic requirement is to make current I1 close to l2, a maximum difference of 20% is accept across SCR2, the value of R can be obtained from.

    I1R + V1 = I2R + V2
    R = (V1 – V2)/(I2 – I1)
    Calculation:
    Voltage across 0.05 ohm resistor  = 120 × 0.05 = 6 V
    ⇒ I2 = 6/0.06 = 100 A
    Current through T1 will be nearly equal to 100  A
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    The figure below shows two thyristors each rated 500 A (continuous) sharing a load current. current through thyristor T2 is 120 A the current through T1 will be nearly equal to ___ (in A)Correct answer is '100'. Can you explain this answer?
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