Question

A single phase fully controlled bridge converter supplies a load drawing constant and ripple free load current. If the triggering angle is 30, the input power factor will be

Answer 1

a/c to question,

A single phase fully controlled bridge converter supplies a load drawing constant and ripple free load current.

The input power factor is given by,
$I.P_f=\bf{0.9cos\alpha}$

where $\alpha$ is the triggering angle .

here it is given that, $\alpha=30^{\circ}$

so, input power factor = 0.9cos30°

= 0.9 × √3/2

= 0.45 × 1.732 [ as √3 = 1.732 ]

= 0.7794

hence, input power factor will be 0.7794