engineering recuitment GATE EE 2023-24 Test Series Power Electronics and Drives Choppers Step Down Choppers
Below is shown a step down dc-dc convertor with an LC filter at its output. Diode D is ideal switch S is operated with duty ratio k = 0.4 at the switching frequency fs = 10 kHz. Assume that the output voltage Vo = Va is constant and also the output current io = Ia is constant. Given that Va = kVS, VS = 100 V, L = 250 μH and C = 100 μF.
Which of the following is/are true?
1
The minimum value of inductor current iL for Ia = 10 A is 5.2 A
2
The maximum value of inductor current iL for Ia = 10 A is 14.8 A
3
The average value of source current is 10 A
4
The average value of source current is 4A for Ia=10 A