PWM Simulation in Switch Mode Power Supply using MATLAB Simulink

In this documentation, I would like to share insights about switch mode power supply applications. I utilized MATLAB's Simulink environment to develop a PWM simulation model and conducted closed-loop experiments. Currently, the simulation does not incorporate PID control implementation. If this topic interests you, please continue reading!

In switch mode power supplies, PWM (Pulse Width Modulation) serves as a fundamental control technique for regulating output characteristics. The simulation employs duty cycle modulation by switching between ON and OFF states through Simulink's pulse generator blocks, effectively controlling output voltage or current levels. My simulation model establishes a closed-loop control system using feedback components like voltage sensors and comparators to mimic actual power supply operational behavior.

Although the current simulation experiment hasn't integrated PID (Proportional-Integral-Derivative) controller implementation, this algorithm remains crucial for providing enhanced stability and precision in closed-loop systems. The PID controller would typically be implemented using Simulink's PID Controller block with tunable parameters (Kp, Ki, Kd) for optimizing dynamic response. Future simulation enhancements plan to incorporate PID control to improve switch mode power supply performance metrics including transient response and steady-state accuracy.

I hope technical enthusiasts interested in switch mode power supplies and Simulink simulation modeling find this documentation valuable. Your comments and discussions are warmly welcomed!