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Power electronics and drives miscellaneous

Power Electronics and Drives

  1. The circuit shows an ideal diode connected to a pure inductor and is connect ed to a purely sinusoidal 50Hz voltage source. Under ideal conditions, the current waveform through the inductor will look like





Correct Option: D

vL = L
di
, i =
1
∫vdt
dt2


For 0 < ω t < π , vL = vin = 10 sin ω t =
di
dt

∴ i =
1
∫vdt =
π
∫10 sin100 π t dt
L0.1

⇒ i = – cos 100π t + c
At 100π t =
π
, i = 0 ⇒ c = 0
2

∴ i = – cos 100 πt
∴ ipeak = 1A
For π < ω t, vL = vin = 0



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