In a thyristor D.C. chopper, which type of commutation results in best performance ?

Question

In a thyristor D.C. chopper, which type of commutation results in best performance ?

asked Dec 31, 2017 by anonymous

2 Answers

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Last Answer : Class D commutation: This is also called as auxiliary commutation because it uses an auxiliary SCR to switch the charged capacitor across conducting SCR to turn it off. In this scheme, the main ... make SCR1 forward biased and keep ready for next triggering. The above cyclic process is repeated.

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Description : Class D commutation

Last Answer : Class D commutation: This is also called as auxiliary commutation because it uses an auxiliary SCR to switch the charged capacitor across conducting SCR to turn it off. In this scheme, the main ... make SCR1 forward biased and keep ready for next triggering. The above cyclic process is repeated.

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Description : Class A Load Commutation

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Last Answer : Natural commutation means: reducing the current to zero and allowing time to recover thyristor junctions

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