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Multilevel Inverters

D12.7 - Single-Stage Transformer-Based Multilevel Inverter with FCS-MPC Control for High-Performance Grid-Tied Applications

Thursday, March 26, 2026
12:00 PM - 1:45 PM CT
Location: Hemisfair Ballroom
Addressing MLI design challenges, this work proposes an FCS-MPC-controlled isolated single-phase TBMI for grid-connected applications, employing three H-bridge units and cascaded transformers to achieve up to 27-level output through optimized turn ratios (1:3:9). The proposed system configuration has been analyzed, demonstrating that the proposed predictive current control can synthesize output levels unattainable with SPWM and linear controllers. In addition, the proposed TBMI has been experimentally validated over 1.2kW, 220V hardware prototype. The system achieves a high voltage boost ratio of 13:1, maintains THD below 1.5%, and demonstrates rapid, well-damped transient performance with a settling time under 5 ms and overshoot below 5%, thereby validating its stability even under stringent control conditions.