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The average value of the output voltage, in a 3-phase half wave diode rectifier with Vml as the maximum line voltage value, is given by the expression

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in Power Electronics by (27.1k points)
The average value of the output voltage, in a 3-phase half wave diode rectifier with Vml as the maximum line voltage value, is given by the expression

(a) Vml/3π

(b) 2Vml/3π

(c) 3Vml/2π

(d) 3Vml

I have been asked this question by my college professor while I was bunking the class.

My question is taken from 3P-Diode Rectifiers-1 in chapter Diode Rectifiers of Power Electronics

1 Answer

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by (45.1k points)
Correct choice is (c) 3Vml/2π

Best explanation: ression: The average value can be obtained by

3 x [ 1/2π x Vml sin ωt d(ωt) ]

The integration runs from π/6 to 5π/6 as the diode is conducting for 120 degrees each.

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