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Calculate the average value of thyristor current in 3-Φ Full wave converter for the load current=9 A and α=26°.

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Calculate the average value of thyristor current in 3-Φ Full wave converter for the load current=9 A and α=26°.

(a) 4 A

(b) 5 A

(c) 7 A

(d) 3 A

I have been asked this question during an online interview.

This intriguing question comes from Solid-State Switching Circuits topic in chapter Introduction to Solid-State Switching Circuits of Electric Drives

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The correct choice is (d) 3 A

The best explanation: The average value of thyristor current in 3-Φ Full wave converter is Io÷3. It is the average value of the thyristor current. I(r.m.s) = Io÷3 = 3 A.

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