| Abstract |
Today's standard medium voltage converters are operated with low switching frequencies and containbulky passive components. One concept to change this is the Quasi-Two-Level operation (Q2O) ofmultilevel converters with fast switching semiconductors to minimize passive components. The FlyingCapacitor Converter (FCC) with SiC semiconductors and operated with Q2O is thus a converter withminimized passive components. In this paper, a comparison of balancing algorithms for Quasi-Two-Level operation of a FCC is presented. The differences between the various methods are demonstrated by simulation and measurement results. Furthermore, a modulation principle with balancing for Quasi-Three-Level operation of a FCC is introduced. With the FCC, it is easy to upgrade from the Q2O to Quasi-Three-Level operation (Q3O) to take full advantage of a three-level output voltage. |
