Are you researching custom power devices and voltage mitigation strategies? This comprehensive Series Active Power Filter (SAPF) MATLAB/Simulink model is engineered to instantly detect and correct severe voltage disturbances in low-voltage networks.



The simulation effectively mitigates voltage drops caused by 3-phase to ground faults (20ms duration) and sudden heavy load connections.

🚀 Key Technical Features of the Model:

Advanced Control Strategy: Implements the Instantaneous Power Theory (p-q theory) to generate precise reference values.

High-Performance Inverter: Utilizes a MOSFET-based inverter equipped with Hysteresis control for rapid and accurate firing.

Coordinate Transformations: Features integrated Clarke and Inverse Clarke Transformation blocks (abc to Alpha-beta and vice versa) for generating 3-phase reference voltages.

DC Link Regulation: Includes a PI controller to regulate the 500 mF capacitor DC voltage, compensating for inverter switching losses.


Waveform Smoothing: Incorporates series and parallel passive filters (RL and RC) at the inverter output to eliminate switching ripples before grid injection.

Injection Mechanism: Uses a 20kVA (200:200) injection transformer connected in series with the grid to apply the compensating voltage.

⚡ Simulated Fault & Load Scenarios Included:

Source voltage: 220V (Phase-to-Neutral).

Event 1: 3-phase to ground fault between 0.08s - 0.10s.

Event 2: Sudden heavy load injection (100 kW & 90 kVAr) between 0.14s - 0.16s.

Baseline Load: A bridge-rectifier non-linear load combined with a 10 kW & 9 kVAr per phase load.



📦 What's Included in Your Download?

✅ The complete, ready-to-run .slx MATLAB/Simulink model file.

✅ Pre-configured blocks for the source, loads, fault generators, control algorithms, and inverter.

✅ Arranged scope outputs to easily visualize and export data for grid voltage, load voltage, grid current, and load current.

✅ Clear visualization of inverter output voltage, p-q values, and reference signal generation.

🎯 Who is this for?

Power Systems Researchers & MSc and PhD Candidates: Accelerate your simulation work and use this robust architecture as a baseline to test novel control algorithms.

Electrical Engineering Students: A perfect, working reference model for theses and final-year projects regarding Power Quality and Active Filters.

Buy and download the MATLAB/Simulink files for 2017 and 2024 versions.

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