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From the diode rectifier circuit shown below, with phase sequence R-Y-B, from ωt = 150° to 270°

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in Power Electronics by (27.1k points)
From the diode rectifier circuit shown below, with phase sequence R-Y-B, from ωt = 150° to 270°

(a) D1

(b) D2

(c) D3

(d) None of the diodes conduct

I have been asked this question in homework.

My question is based upon 3P-Diode Rectifiers-2 topic in division Diode Rectifiers of Power Electronics

1 Answer

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by (45.1k points)
Correct choice is (b) D2

To elaborate: Construct the phase voltage waveforms on a graph. At 150 degree, D2 is forward biased while the other positive group diodes i.e. D2 and D3 remain reserved biased.

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