When the firing angle α of a single phase fully controlled rectifier feeding constant dc current into the load is 30°, the displacement factor of the rectifier is
When the firing angle α of a single phase fully controlled rectifier feeding constant dc current into the load is 30°, the displacement factor of the rectifier is
Right Answer is:
3/√2
SOLUTION
The displacement power factor is the power factor due to the phase shift between voltage and current at the fundamental line frequency. For sinusoidal (non-distorted) currents, the displacement power factor is the same as the apparent power factor.
Displacement Power Factor = Cosθ
Given θ = 30°
DPF = Cos30° = 3/√2