MATLAB PWM Rectifier Modeling and Simulation

Developing a PWM rectifier model in MATLAB presents an engaging and practical engineering task. This simulation model enables accurate performance analysis of PWM rectifiers in power electronic circuits, facilitating deeper understanding of various circuit parameters and their impacts. During implementation, engineers must consider critical factors including switching frequency modulation, duty cycle control algorithms, output current characteristics, and harmonic distortion analysis. The model utilizes MATLAB's Simulink toolbox for systematic block diagram construction, incorporating Power System Blockset components for semiconductor switches, filters, and control circuits. Key implementation aspects involve configuring MOSFET/IGBT switching elements using Pulse Width Modulation (PWM) generators, designing LC filter networks, and implementing voltage/current feedback control loops. The simulation allows real-time parameter tuning through MATLAB scripts for optimizing performance metrics like power factor correction and THD reduction. Advanced features include automated parameter sweeping for sensitivity analysis, FFT tools for harmonic spectrum visualization, and custom S-function blocks for specialized control algorithms such as space vector modulation or predictive current control. This comprehensive modeling approach provides valuable insights into PWM rectifier dynamics, enabling improved circuit design capabilities and optimization strategies for industrial applications.