MATLAB Simulation of Active Power Filter (APF) with DC Voltage Control and Ip-Iq Detection Method

MATLAB simulation of Active Power Filter (APF) is crucial for comprehensive understanding of DC voltage control techniques and Ip-Iq detection methodology. This simulation utilizes MATLAB/Simulink environment to model and analyze APF performance through power electronics components implementation including IGBT switches, LC filters, and control system blocks. The simulation framework incorporates real-time harmonic detection algorithms where the Ip-Iq method transforms three-phase currents into synchronous reference frame using Clarke and Park transformations, implemented through MATLAB function blocks or S-functions. The DC voltage control loop typically employs PI controllers to maintain capacitor voltage stability, with implementation involving voltage sensing, error calculation, and PWM signal generation for switching devices. Through this simulation, researchers can deeply investigate APF applications in power systems and optimize control strategies for enhanced power quality. This serves as an invaluable tool for power engineers and researchers, enabling them to address practical challenges in filter design and control implementation, with capabilities for parameter tuning, harmonic analysis using FFT blocks, and performance validation under various load conditions.