PWM Rectifier Modeling and Simulation with Dual-Loop Control Implementation

A PWM rectifier is an electronic circuit that converts alternating current (AC) to direct current (DC), widely used in various electronic devices. The modeling and simulation of this circuit can be accomplished using software like MATLAB/Simulink, where developers typically implement mathematical models representing power electronic components such as IGBTs or MOSFETs, along with control algorithms. The simulation workflow involves configuring circuit parameters, designing pulse-width modulation (PWM) switching patterns, and analyzing dynamic responses through tools like Simulink's Power Systems Library. Furthermore, the PWM rectifier can achieve dual-loop control—commonly implemented with an outer voltage loop and an inner current loop—using control algorithms such as PI regulators or advanced techniques like sliding mode control. In code implementation, this typically involves sampling output voltage and input current signals, processing them through digital signal processors (DSPs) or microcontrollers, and generating precise PWM signals via interrupt service routines. Research demonstrates that this control strategy enhances circuit efficiency and stability by maintaining tight regulation under varying load conditions. The methodology has been experimentally validated and successfully deployed in various electronic applications, including power supplies, motor drives, and wireless charging systems, where MATLAB/Simscape or PLECS simulations often precede hardware implementation to verify control logic and performance metrics.