This study focuses on enhancing power quality using a Current Source Converter (CSC) based Dynamic Voltage Restorer (D-STATCOM) controlled by a Fuzzy Logic-PID (Fuzzy-PID) controller. Power quality improvement is a vital aspect of maintaining reliable and efficient electrical power systems. The integration of fuzzy logic with traditional PID control enables adaptive and precise regulation of the D-STATCOM, addressing voltage sags, swells, and harmonic distortions effectively. The Fuzzy-PID controller dynamically adjusts the control parameters, offering superior performance in compensating for power quality disturbances compared to conventional methods. Simulation and experimental results demonstrate that the Fuzzy-PID controlled CSC-based D-STATCOM significantly improves voltage stability, reduces harmonic distortion, and enhances overall power quality. This approach is particularly effective in managing the nonlinear and time-varying nature of electrical loads, making it highly suitable for industrial power systems, renewable energy integration, and smart grid applications. The proposed system ensures robust and reliable power quality improvement, presenting a promising solution for modern electrical infrastructure challenges.