Question 2 a) Briefly explain the de chopper, inverter, controlled rectifier and ac voltage controller. b) A buck-boost regulator as shown in Figure 2 has an input voltage, Vs 12 V. The duty cycle, k = 0.35 and the switching frequency is 30 kHz. It also has an inductance, L = 200 µH, filter capacitance, C 440 µF. The average load current, la 1.25 A. Determine the: %3D i. average output voltage, Va, ii. peak-to-peak output ripple voltage, AVc, iii. peak-to-peak output ripple current of inductor, AI,

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Question 2
a) Briefly explain the de chopper, inverter, controlled rectifier and ac voltage controller.
b) A buck-boost regulator as shown in Figure 2 has an input voltage, Vs = 12 V. The duty
cycle, k = 0.35 and the switching frequency is 30 kHz. It also has an inductance,
L = 200 µH, filter capacitance, C = 440 µF. The average load current, Ia 1.25 A.
Determine the:
i.
average output voltage, Va,
ii.
peak-to-peak output ripple voltage, AVc,
iii.
peak-to-peak output ripple current of inductor, AI,
iv.
peak current of the transistor, Ip,
V.
critical values of L and C, and
vi.
critical values of L and C if Vs is increased to 14 V. Estimate the change in
percentage for the critical values of L and C.
is
Vs
C
Load
Vo, Vs
VC
i, Ia
Figure 2
Transcribed Image Text:Question 2 a) Briefly explain the de chopper, inverter, controlled rectifier and ac voltage controller. b) A buck-boost regulator as shown in Figure 2 has an input voltage, Vs = 12 V. The duty cycle, k = 0.35 and the switching frequency is 30 kHz. It also has an inductance, L = 200 µH, filter capacitance, C = 440 µF. The average load current, Ia 1.25 A. Determine the: i. average output voltage, Va, ii. peak-to-peak output ripple voltage, AVc, iii. peak-to-peak output ripple current of inductor, AI, iv. peak current of the transistor, Ip, V. critical values of L and C, and vi. critical values of L and C if Vs is increased to 14 V. Estimate the change in percentage for the critical values of L and C. is Vs C Load Vo, Vs VC i, Ia Figure 2
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