An Effective Sliding Mode PWM Control for The PUC5 Inverter

This paper proposes an effective Sliding Mode PWM (SMPWM) control strategy based on the average model of the 5-level Packed-U-Cell (PUC5) inverter. The proposed controller is designed from a stability point-of-view based on the Lyapunov control theory, to balance the PUC5 capacitor voltage and feed a sinusoidal current to the load with low harmonics distortion. The proposed controller is offering the following advantages over the conventional controllers: 1) Reduced switching stress and low harmonics content of the load current owing to the fixed switching frequency; 2) High robustness against disturbances and parameters mismatch. Simulation and experimental results are presented to confirm the effectiveness of the proposed controller.