AT-NPC 3-level Circuit
AT-NPC 3-level conversion circuit using RB-IGBT
■ Comparison of AT-NPC 3-level and conventional methodsCompared with conventional 2-level and 3-level products, by adopting our own in-company developed RB-IGBT*, we have achieved conductive loss reduction and reactor loss reduction in an AT-NPC 3-level (T-type) conversion circuit. In addition, together with the AT-NPC 3-level circuit, we have also achieved low noise by optimizing the number of output voltage steps. *RB-IGBT: A reverse blocking IGBT (RB-IGBT) is a low-loss, bi-directional switch (device) that features reverse voltage performance that cannot be provided by conventional IGBTs.