  The design of gate drivers is an important topic in power converter
topologies that can help reduce switching losses and increase power density.
Gate driving techniques that offer zero-voltage switching and/or zero current
switching have recently been successfully proposed for different modular
multilevel converters such as the cascaded H bridge. Previous papers on other
multilevel converters such as the multi-active bridge, however, do not
sufficiently assess the topics of gate driver design for this topology. This
work presents a novel isolated gate driver architecture tailored to the
multi-active bridge topology. Zero voltage switching is then achieved using two
multi-winding transformers. The advantages of the proposed topology are not
only a reduction of switching losses but also reduced component count.
  The topology is evaluated on a prototype using experimental results.
  It was shown using simulation and experiments that the proposed topology has
a high efficiency while providing compact power packaging.
  Especially for converters with many levels, the proposed topology is
therefore advantageous compared to existing solutions.
