MATLAB-Based Design of Active Power Filter

In electrical power systems, maintaining voltage stability typically requires compensation for reactive power in the grid. Harmonic current detection methods provide more accurate assessment of reactive power compensation requirements. This design employs the ip-iq algorithm for harmonic current detection, which involves transforming three-phase currents into synchronous reference frames using Clarke and Park transformations. The implementation utilizes MATLAB's signal processing toolbox for real-time harmonic extraction. For compensation, the hysteresis current control method is applied, where the actual current tracks the reference current within a predefined band through rapid switching of power electronic devices. This approach not only enhances grid stability but also reduces harmonic pollution, thereby ensuring secure and stable grid operation. The MATLAB implementation includes Simulink models for simulating power converter dynamics and control system performance validation.