DC-DC Converters (Buck, Boost, Buck-Boost, cuk)

Simulink Models of DC-DC Converters (Buck, Boost, Buck-Boost, cuk) with Waveforms & Duty Cycle Control

This submission provides basic Simulink models of four essential DC-DC power converters:

1. Buck Converter (Step-Down)
2. Boost Converter (Step-Up)
3. Buck-Boost Converter (Inverting/Step-Up-Down)
4. Ćuk Converter (Inverting/Step-Up-Down with Low Ripple)

Each model includes:

• Manual duty cycle adjustment.
• Waveform visualization (output voltage, inductor currents, switching signals).
• Key measurements.

Ćuk Converter Highlights:

• Inverted output voltage (Vout = -Vin × (D / (1 - D)).
• Energy transfer via capacitor (C₂).

Disclaimer:

This MATLAB Simulink model is a personal project created by an engineering student for educational purposes only. It is not intended to be a professional or commercial product and should not be relied upon for critical applications or decision-making. The model may contain errors, limitations, or inaccuracies. The author is not responsible for any consequences arising from the use or misuse of this model.

Use Cases:

• Teaching power electronics fundamentals.
• Comparing converter topologies.
• Prototyping for renewable energy/battery systems.

Requirements:

• MATLAB R2024a or later.
• Simulink (simscape, simscape Electrical).

How to Use:

1. Open the .slx file.
2. Adjust the duty cycle (e.g., D = 0.3 for Ćuk converter).
3. Run the simulation and observe waveforms (Scope blocks).