Single-Phase Three-Level Inverter with SPWM Control

This innovative single-phase three-level inverter consists of one three-level bridge arm and one conventional bridge arm, controlled using SPWM technique. The primary advantage of this inverter lies in its ability to generate higher-quality output voltage with significantly reduced distortion at the output stage. A key application domain involves integration with solar panel systems for DC-to-AC power conversion. Implemented in MATLAB 2008, this simulation model employs Power System Blockset components to emulate solar panel output characteristics and conduct performance validation tests. The code structure typically includes: - Power electronics device modeling using IGBT/diode blocks - SPWM signal generation through comparison of carrier and reference waves - Output filter design with LC components for harmonic reduction - THD measurement blocks for waveform quality assessment To enhance inverter efficiency, alternative control strategies such as Space Vector PWM or advanced topologies like neutral point clamped configurations could be implemented through additional control algorithm modules. In conclusion, this novel single-phase three-level inverter demonstrates substantial potential for diverse applications and warrants further research and development for optimized performance characteristics.