Question

Calculate the Vo(r.m.s) (Highly inductive load) for the 3-Φ phase Half-wave uncontrolled rectifier if the supply value is 441 V.

(a) 297.25 V

(b) 298.15 V

(c) 298.11 V

(d) 300.15 V

The question was asked in examination.

My question is based upon Solid-State Switching Circuits topic in division Introduction to Solid-State Switching Circuits of Electric Drives

Answer 1

Right option is (a) 297.25 V

The explanation: The Vo(r.m.s) for the 3-Φ phase Half-wave uncontrolled rectifier is 3Vml÷2π. The value of output voltage is 3Vml÷2π=3×√2×441÷6.28=297.25 V.