Simulink-Based AC-DC-AC Converter Model Integrated with LabVIEW for Real-Time Control

This article provides a comprehensive guide on modeling AC-DC-AC converters using Simulink and LabVIEW integration. We begin with fundamental concepts, demonstrating how Simulink's graphical programming environment enables circuit modeling and simulation through block diagram connections and parameter configuration. The implementation typically involves using Simulink's Simscape Electrical toolbox components like three-phase sources, IGBT-based converters, and PWM generators to construct the power electronics topology. Subsequently, we detail the integration methodology with LabVIEW using MATLAB Script nodes or the Simulation Interface Toolkit, which allows real-time data exchange through TCP/IP or shared memory protocols. The technical discussion covers AC-DC-AC converter operational principles including rectification stages (using diode/thyristor bridges), DC-link capacitor design, and inversion phases (implementing space vector modulation algorithms). The simulation aspect incorporates system testing with variable load conditions and harmonic analysis using FFT tools, while LabVIEW integration enables hardware-in-the-loop validation through DAQmx drivers for sensor data acquisition and control signal generation. By completing this guide, you will master the complete workflow for designing, simulating, and experimentally validating AC-DC-AC converter systems using co-simulation techniques.