A voltage source 200 sin314t is applied to a thyristor-controlled halfwave rectifier with a resistive load of 50Ω. If the firing angle is 30° with respect to supply voltage waveform, the average power in the load is
A voltage source 200 sin314t is applied to a thyristor-controlled halfwave rectifier with a resistive load of 50Ω. If the firing angle is 30° with respect to supply voltage waveform, the average power in the load is
Right Answer is:
70.6 watts
SOLUTION
The Average Power in Half wave rectifier in Resistive load is given as
Pavg = V2m(1 + cosα)2 ⁄4π2R
Where
Vm =supply voltage Voltage
α = Firing angle
R = Resistance
Given
V = 200sin314t = Vmsinωt
Vm = 200 V
α = 30°
R = 50 Ω
Pavg = 2002 (1 + cos30)2 /4 × 3.142 × 50
Pavg = 70.57 Watt