Simulation Files for Three-Phase PWM Rectifier Implemented with S-Function

A three-phase PWM rectifier is a power electronic device widely used in industrial applications, capable of bidirectional power flow and suitable for four-quadrant operation scenarios. The simulation model implemented through S-function can accurately simulate its dynamic characteristics, including input current harmonic control, power factor regulation, and DC bus voltage stability control.

In the simulation, the S-function primarily describes the rectifier's switching logic and closed-loop control strategies, such as dual-loop control with voltage outer-loop and current inner-loop. This approach not only suppresses input current harmonics but also ensures unity power factor operation while maintaining stable output DC voltage. The simulation methodology provides reliable references for practical hardware design through code implementation that models switching patterns using pulse-width modulation algorithms and implements PI controllers for voltage/current regulation loops.