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Comprehensive Analysis of Three-phase Three-level T-type Neutral-Point-Clamped Inverter with Hybrid Switch Combination

This paper comprehensively evaluates three space-vector-modulation (SVM) schemes on a novel three-phase hybrid-switch-based 3-level T-type neutral-point-clamped (3L-TNPC) inverter, regarding switching loss, neutral point balancing and EMI spectrum. The switching loss analysis based on the double-pulse test (DPT) are completed, revealing the loss characters of each switch in 3L-TNPC. Based on the loss and EMI characters, three kinds of SVMs are proposed, analyzed and compared. The optimal SVM is then selected based on comparison.