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In the below given circuit, from ωt = π to α+π and continuous load current configuration

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in Power Electronics by (27.1k points)
In the below given circuit, from ωt = π to α+π and continuous load current configuration

(a) T1 and T2 conduct

(b) T2 and D1 conduct

(c) T1 and D2 conduct

(d) T1 and D1 conduct

I got this question at a job interview.

My doubt stems from Single Phase Semi-Converters-2 in portion Converters of Power Electronics

1 Answer

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by (45.1k points)
Correct option is (c) T1 and D2 conduct

The explanation: At ωt = π, D1 is reversed biased but T1 is still ON due to the nature of the load. Hence, the load current or inductor current flows from T1 and D2 and short circuiting the load terminals. Hence, due to the diode D2 freewheeling action takes place without even having a FD diode.

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