Three-Level APF Filtering Model

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Resource Overview

MATLAB Simulink simulation of a three-level active power filter (APF) implementing instantaneous reactive power algorithm and phase-locked loop (PLL) with SPWM-controlled IGBT switching, featuring stable performance and successful product realization.

Detailed Documentation

This project utilizes Simulink for MATLAB simulation of a three-level Active Power Filter (APF). The implementation incorporates key algorithms including the instantaneous reactive power theory for harmonic detection and phase-locked loop (PLL) for synchronization. The control system employs Sinusoidal Pulse Width Modulation (SPWM) to drive IGBT switches, with detailed modeling of gate signals and switching patterns. Based on successful simulation results, the design has been transformed into a commercial product. This filter effectively mitigates grid harmonics and addresses power quality issues, significantly enhancing power system stability and reliability through advanced digital signal processing techniques embedded in the control algorithm.

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