A Novel Switching Strategy Based on the Driving Voltage and Switching Sequence for Si/SiC Hybrid Switch

Silicon/Silicon carbide hybrid switch have been proven to have the advantages of high efficiency and low cost. However, existing research of hybrid switches only focuses on reducing device losses or ensuring reliable operation. In this article, a novel switching strategy based on the driving voltage and switching sequence for the hybrid switch is proposed. Experimental results show that compared with the existing switching strategy of the fixed driving voltage, the proposed switching strategy cannot only ensure a high reliability of the hybrid switch, but also improve the efficiency. Then, the effectiveness of the proposed switching strategy is verified in a single-phase inverter. Further, the efficiency of the single-phase inverter operating with the proposed switching strategy is increased by 0.79% compared with the existing switching strategy.