Question

What is the formula for output voltage for 3-Φ Full wave bridge rectifier for R load for α > 60°?

(a) 2Vml(1+cos(∝+60°))÷π

(b) 3Vml(1+cos(60°+∝))÷2π

(c) 3Vml(1+cos(60°+∝))÷π

(d) 6Vml(cos(∝))÷π

The question was posed to me during an interview.

I want to ask this question from Solid-State Switching Circuits topic in chapter Introduction to Solid-State Switching Circuits of Electric Drives

Answer 1

Right option is (c) 3Vml(1+cos(60°+∝))÷π

For explanation: The output voltage of 3-Φ Full wave bridge rectifier for R load is 3Vml(1+cos(60°+∝))÷π for α > 60°. Conduction will only remain from 60°+α to 180°.