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In this paper, two types of Silicon (Si) IGBT and Silicon Carbide (SiC) hybrid switch (Si&#x002F;SiC HyS) based three-level active neutral-point-clamped (3L-ANPC) inverter are proposed for high efficiency and low device cost. The proposed Si&#x002F;SiC HyS-based 3L-ANPC inverters are compared with the full Si IGBT, full SiC MOSFET, and Si with SiC devices-based hybrid 3L-ANPC solutions on the inverter efficiency, power capacity, and device cost. It is shown that compared with the full Si IGBT 3L-ANPC solution, the inverter efficiency improvement by Si&#x002F;SiC HyS is 2.4&#x0025; and 1.8&#x0025; at light load condition and heavy load condition, respectively. Compared to the full SiC MOSFET solution and 2-SiC MOSFET hybrid scheme, the device cost of 2-Si&#x002F;SiC HyS-based 3L-ANPC is reduced by 78&#x0025; and 50&#x0025; with 0.28&#x0025; and 0.21&#x0025; maximum inverter efficiency sacrifices. The testing results show that the proposed Si&#x002F;SiC HyS-based 3L-ANPC inverter is a cost-effective way to realize high inverter efficiency. Between the two proposed Si&#x002F;SiC HyS-based 3L-ANPC inverters, the 2-Si&#x002F;SiC HyS-based 3L-ANPC inverter has lower device cost which makes it more suitable for cost-sensitive and high efficiency applications. While the 4-Si&#x002F;SiC HyS-based 3L-ANPC inverter has higher output power capacity, making it a better candidate for high power density, high power capacity, and high efficiency applications.

Performance Evaluation of Si/SiC Hybrid Switch-Based Three-Level Active Neutral-Point-Clamped Inverter