PWM Rectification with Voltage Outer Loop, Current Inner Loop, and SVPWM Control

In PWM rectification control systems, we implement Space Vector PWM (SVPWM) control through a dual-loop structure consisting of a voltage outer loop and a current inner loop. The voltage outer loop regulates the output DC voltage to maintain stable operation, while the current inner loop tracks and controls the input current waveform for improved power quality. This control strategy typically involves proportional-integral (PI) controllers in both loops, with the outer loop generating current references for the inner loop. The SVPWM algorithm then converts these references into switching signals for the power transistors, optimizing voltage utilization and reducing harmonic distortion. Through this hierarchical control approach, we achieve precise voltage and current regulation, significantly enhancing system stability and dynamic performance. Implementation often includes Clarke/Park transformations for coordinate system conversion and anti-windup techniques for controller stability during saturation conditions.