MATLAB-Based Three-Phase SPWM Inverter Circuit

This MATLAB-based three-phase SPWM inverter circuit converts DC power to three-phase AC power. The circuit implementation requires consideration of multiple factors including system stability, efficiency, and power factor. To enhance circuit stability, filters and protection circuits can be integrated into the simulation model. The efficiency can be improved by increasing the number of switching transistors in the power electronic configuration, though this increases overall system cost. SPWM parameters such as modulation index and carrier frequency can be programmed in MATLAB to control output voltage magnitude and frequency. Key implementation aspects include using MATLAB's Simulink environment to model power electronic switches, implementing SPWM algorithms through comparison of sinusoidal reference waves with triangular carrier signals, and configuring PID controllers for voltage regulation. When designing the inverter circuit, careful consideration of these factors along with other potential design challenges is essential to ensure system reliability and performance.