Question

A single phase full converter feeds power to a RLE load  with R = 6 Ω and E = 60 V. Find the average value of the load current when the supply voltage is 230 V rms AC and a firing angle = 50°.

(a) 0

(b) 3.9A

(c) 12.1 A

(d) 6.05 A

The question was posed to me in examination.

My question comes from Single Phase FW AC-DC-4 topic in section Converters of Power Electronics

Answer 1

Correct choice is (c) 12.1 A

To elaborate: Vo = 2Vm/π cosα = 133.084 V

I = Vo – E/R = 133.084-60 / 6 = 12.181 A.