Parallel Active Power Filter Model with Instantaneous Reactive Power Theory Implementation

This document presents a parallel active power filter model grounded in instantaneous reactive power theory. The active power filter serves as a power quality improvement device that mitigates harmonics and eliminates grid disturbances through precise control of current and voltage waveforms. The implementation typically involves harmonic detection algorithms (such as p-q theory or d-q transformation) and current tracking control strategies (like hysteresis control or PI-based PWM modulation). The parallel active power filter model finds extensive applications across industrial sectors, commercial buildings, and residential complexes. It effectively enhances power system stability and reliability while reducing energy losses. By deploying this model, engineers can achieve precise power quality control through real-time harmonic compensation algorithms and current reference generation functions, ensuring stable and reliable power supply. Key implementation aspects include DC-link voltage regulation, switching frequency optimization, and harmonic extraction filters using Fourier analysis or wavelet transforms.