Question

In the below given circuit, when the main thyristor T1 is triggered after charging the capacitor, the commutation current flows through the path

(a) Vs – T1 – Load – Vs

(b) S – C – T1 – Load – S

(c) C – T1 – L – D – C

(d) C – T1 – TA – C

This question was addressed to me by my college professor while I was bunking the class.

This intriguing question originated from Thyristor Chopper Circuits topic in portion Choppers of Power Electronics

Answer 1

The correct option is (c) C – T1 – L – D – C

Explanation: The commutation current is nothing but the capacitor current.