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1-Phase Semiconverter RL, RLE Load

A single phas...

Question

A single phase semi converter, using two thyristors and two diodes as shown below. The load consists of a large inductor so as to maintain load current constant.

If firing angle is $30^{\circ}$ , then the circuit turn - off time is ______ ms.

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Solution

Circuit turn-off time, $t_{c} = \frac{π - α}{2 π f} = \frac{π - (\frac{π}{6})}{2 π \times 50} = 8.33 m s$

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