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For the below given circuit configuration, the SCR is fired at angle α. For continuous current mode from ωt = π to 2π

(a) FD conducts

(b) SCR and D1 conduct

(c) D3 and D2 conducts

(d) None of the mentioned

This question was addressed to me in an internship interview.

Enquiry is from Single Phase Semi-Converters-1 topic in portion Converters of Power Electronics

1 Answer

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by (45.1k points)
The correct choice is (c) D3 and D2 conducts

The explanation is: From ωt = π to 2π, the negative cycle is active and the SCR is reversed biased. D3 and D2 are ative and are supplying power to the load.

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