A Novel Fast and High Performance Reconstruction Voltage Perdictive Controller for three Phase Multilevel Inverters

This paper introduces a novel high-performance reconstruction voltage predictive control (RVPC) scheme with broad applicability to three-phase multilevel inverters. The proposed modulation technique presents a significant reduction in computational time compared to the conventional finite control set model predictive control (FCS-MPC) methods, eliminating the need to search the entire state space for optimal switching state. Additionally, the proposed RVPC not only enhances the DC link utilization parameter but also improves inverter performance by reducing voltage THD compared to conventional MPC. The proposed current control technique is tested on a three-level T-type Neutral Point-Clamped (T-NPC) topology, with introducing a modified level-shifted SPWM for DC link voltage balancing approach to keep the voltage across DC link capacitors balanced. The design, simulation, and experimental results are given in the paper to prove the merits of the proposed control scheme.