Question

Use MATLAB to verify that the buck converter operates in continuous current and produces a desired voltage of 20 V (since that, VOUT = 50 V x 0.4). Obtain the simulation results of inductor current iL, capacitor current iC and the output voltage VOUT. Record the values of all the waveform ripples.

Modify the buck converter circuit, so that the ripples of the waveforms obtained in (a) can be minimized as follows: • inductor current ripple, iL ≤ 0.2 A • capacitor current ripple, ic ≤ 0.2 A • desired output voltage is maintained at 20 V, but its ripple, ∆VOUT ≤ 0.5 % of the output voltage. Verify the modifications via simulation using MATLAB. Compare the simulation results obtained in (a) and (b). Highlight and discuss the improvements achieved.

Answer 1

To verify the operation of the buck converter, simulate the circuit in MATLAB and analyze the waveforms and ripples. Modify the circuit to minimize the ripples and compare the simulation results to evaluate the improvements.

Step-by-step explanation:

To verify that the buck converter operates in continuous current and produces a desired voltage of 20 V, you can simulate the circuit using MATLAB. By analyzing the simulation results, you can determine the waveforms and ripples for the inductor current (iL), capacitor current (iC), and output voltage (VOUT). To minimize the ripples, you can modify the buck converter circuit by adjusting the values of components such as the inductor and capacitor. After making the modifications, you can simulate the circuit again and compare the simulation results to highlight and discuss the improvements achieved.