Central difference model predictive current control of single-phase H-bridge inverter with LCL filter

This paper describes a central difference based model predictive control of a Single-Phase H-bridge inverter with a LCL output passive filter. The central difference model predictive control (CDMPC) is a novel approach for linear system control based on a central difference theorem. The single-phase H-bridge is driven by the pulsewidth-modulation-based (PWM) method with signal A/D sampling controlled by the PWM periphery and it has one step time delay in the actuation. This delay is compensated by the Smith predictor. The theoretical conclusions are verified by simulations.