Active Power Filter Based on Instantaneous Reactive Power Theory

This project implements an active power filter based on instantaneous reactive power theory, constructed within MATLAB's Simulink environment. Active power filters are essential devices for reducing harmonics and reactive power in electrical power systems. The system utilizes instantaneous reactive power theory to achieve filtering functionality by processing power signals to deliver cleaner power quality. The implementation in MATLAB Simulink employs key algorithmic components including signal processing blocks for real-time current/voltage measurement, coordinate transformation modules (abc-to-αβ transformation), and reactive power calculation units. The model incorporates controlled current sources that generate compensation currents opposite to the detected harmonics, effectively canceling them out. Building this active power filter in Simulink enables convenient simulation and analysis through parameter tuning, waveform observation, and performance validation tools, ensuring the system's effectiveness and reliability through comprehensive testing scenarios including varying load conditions and harmonic spectra.