Question

A three phase fully-controlled bridge converter is connected to 415 V, 60 Hz supply, having 3 reactance of 0.3 $\Omega$ per phase and resistance of 0.05 $\Omega$/phase. If the load current is 60 A, then the voltage drop due to commutation is ______

• A. 17.19

Answer 1

The correct option is A 17.19
Voltage drop due to commutation is

$\frac{3\omega L_s}{\pi }{I}_{d}V$

$=\frac{3\times 0.3}{\pi }\times 60=17.19$ V