| Abstract |
This paper investigates about the efficiency of anasymmetrical Open-End Winding inverterstructure, the AHMLI, when a mixed Si/GaNtechnology approach is adopted. The inverterproposed is formed by a main IGBT three level TTypeinverter, which processes the whole powerfeed to the load, and an auxiliary inverter, whichplays the role of an active filter, being based on GaNdevices. In terms of global efficiency, it will bedemonstrated that the proposed inverter roughlyachieves the same result of an IGBT T-Typeinverter with step modulation, but with much bettervoltage and current THD. The investigationaccomplished is useful to detect the best solution forapplications such as electric vehicles, variablespeed industrial motor drives, and wind turbinepower plants, where high efficiency over anextended speed, and/or load range is required. |
