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Power electronics and drives miscellaneous

Power Electronics and Drives

  1. A single phase voltage source inverter is feeding a purely inductive load as shown in the figure given below.

    The inverter is operated at 50 Hz in 180° square wave mode. Assume that the load current does not have any dc component. The peak value of the inductor current i0 will be
    1. 6.37 A
    2. 10 A
    3. 20 A
    4. 40 A
Correct Option: B


T =
π
=
π
=
1
= 0.01 sec
ω2π50100

And, for 0 < ωt < π,
V0 = L
di
dt

⇒ 200 = 0.1
IP - (-IP)
T

⇒ 2IP = 2000T
⇒ IP = 10 Amps



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