Question

Calculate the average value of thyristor current in 1-Φ Full wave semi-converter for the load (Highly inductive) current=25.65 A and α=18°. (Asymmetrical configuration)

(a) 11.54 A

(b) 12.15 A

(c) 15.48 A

(d) 14.52 A

The question was asked during a job interview.

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

Answer 1

Right option is (a) 11.54 A

For explanation: The average value of thyristor current in 1-Φ Full wave semi-converter is Io(π-α÷2π). It is the average value of the thyristor current. Iavg = Io(π-α÷2π)=25.65(.45)=11.54 A.