MATLAB-Based APF Simulation Experimental Model

This article provides a detailed introduction to the MATLAB-based APF simulation experimental model. This model stands out as an excellent implementation that can be directly deployed in the MATLAB 2010A simulation environment. Through this model, researchers can conduct in-depth studies on Active Power Filters (APFs) - reactive power compensators widely used in power systems. The simulation includes core components such as harmonic detection algorithms, current tracking control modules, and PWM signal generation functions, enabling users to analyze APF's compensation characteristics through waveform observation and THD calculation. The model facilitates deeper understanding of power system operation principles and demonstrates how APFs optimize system performance through reactive power compensation and harmonic suppression. During experiments, users can modify APF parameters (such as controller gains, filter coefficients, and reference current calculation methods) to observe their impact on system performance, thereby gaining practical insights into APF working mechanisms. The simulation architecture incorporates key power electronics components including IGBT-based inverters, DC-link voltage control loops, and synchronous reference frame (SRF) theory implementation for harmonic extraction. In summary, this MATLAB-based APF simulation model serves as a valuable tool for learning and researching APF applications in power systems, providing hands-on experience with power quality improvement techniques.