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Power electronics and drives miscellaneous

Power Electronics and Drives

  1. A chopper is employed to charge a battery as shown in the given figure. The charging current is 5 A. The duty ratio is 0.2. The chopper output voltage is also shown in the figure. The peak to peak ripple current in the charging current is ______ A
    1. 0.48
    2. 0.18
    3. 48
    4. 4.8
Correct Option: A

During TON, V– t area across L is

= L (I mx – Imn) = L∆I


and, V – t area applied to L = (60 – E) TON = 48 TON
Equating the volt-area, we have

∆I =
48 TON
=
48 × 0.22 × 10-3
= 0.48 A
L20 × 10-3



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