The article delves into the method of voltage regulation in three-phase AC-DC converters that use pulse width modulation (PWM). The external voltage loop has a fuzzy logic controller (FLC). As an upgrade over the Conventional PI proportional integral (PI) controllers, fuzzy logic controllers don’t require a mathematical description of the system. Rather, they depend on descriptions in the language. In both steady-state and transient scenarios, the proposed control system aims to regulate the DC voltage output. To get a power factor of one and minimize total harmonic distortion (THD), We require sinusoidal line currents that are in phase with their respective phase voltages when we draw them from the grid. Reducing the power factor and harmonic distortion improves the efficiency of the system, specifically the DC drive, reduces thermal losses in the coils, and minimizes their impact on the controlling electronic circuits. We create and assess control systems for a three-phase pulse width modulation (PWM) AC-DC converter using MATLAB/Simulink and FUZZY-PI control. The results demonstrate that the FL-PIC-based system outperforms the classic PI in terms of reliability and dynamic responsiveness. This technology won’t mess with the power grid because of its tiny THD and sinusoidal current response. And obtaining a smooth and stable DC output with high response speed, without overshoot and without steady-state error.